J'ai besoin de vos conseils, j'ai des pneu en 28 sur un fahrrad 1000, que je gonfle a 3,5 comme indiqué sur le pneu. Je me rode pour un voyage avec tout l'equipement soir environ 15 kg, moi 80 kg dois-je augmenter ma pression ou rester a 3,5.
Merci les amis
Salut,
Par pneu en 28 tu sous-entends pneus de 28mm ou pneus sur roue de 28''
3,5 bar c'est très faible pour des pneus de 28mm
en général c'est plutôt +-6 bar
Si le pneu s'écrase trop sous la charge tu risques évidemment d'augmenter les risques de crevaison par pincement, sans compter les pertes de rendement et l'augmentation de l'usure.
D'un autre coté il faut éviter de dépasser trop la limite de pression max constructeur.
Normalement, pour chaque pneu il y a la charge max que le pneu peut supporter à sa pression max constructeur.
ex:Schwalbe marathon
28mm 85 kg pour 7,5b max
40mm 110kg pour 6b max
50mm 120kg pour 5b max
Mais encore une fois. 3,5 bar max pour des pneus de 28mm me parait vraiment faible .
C'est quoi comme pneus ?
Merci pour la reponse , c'est roues de 28 et sur le pneu il est indiqué 3,5 bars ce que je fais depuis longtemps mais réelle charge. Aors que la je vais avoir 15kg
Merci avec l'age la vue baisse, depuis 3 ans je gonfle a 3,5 c'est que j'avais lu mais aujourd'hui apres verification c'est marqué de 3,0 a 5,5 je suis monté en SCHWALBE marathon mondial 28x175.
Comme quoi c'est utile de poser des questions sur le site.
Si le pneu est donné pour 3,5 bar max, alors il ne faudrait (en théorie) pas dépasser cette valeur.
Le constructeur ne le garantie pas pour une pression sup.
En pratique un petit poil plus doit être sans danger
Mais le plus important est de pouvoir repondre à cette question.
Quel est le poids max que peut supporter ce pneu sachant que sa limite max de pression gonflage est de 3,5 bar.
Sans savoir quel est le pneu, dur de répondre.
Tout ce que je peux dire est que pour une pression max de 3,5 bar ce doit être un gros pneu et que 95 kg sont en général aucun pb pour les gros pneus.
Si je comprends bien tu as un pneu 28 x 1,75, soit pour traduire en dimensions plus courantes pour du Schwalbe marathon : 700 x 47 (diamètre 700mm, largeur 47mm).
C'est un pneu assez large, 3.5kg peuvent être suffisant mais moi je gonflerais :
Sur du bitume : privilégier la qualité de roulement : 4.0kg à l'avant, 4.5kg à l'arrière.
Sur un sol plus défoncé : privilégier le confort : 3.5kg à l'avant, 4.0kg à l'arrière.
Je profite de la conversation pour poser une question qui m'intrigue depuis longtemps : la pression du pneu, donc le frottement qui s'en suit sur le bitume, est-c e que c'est si important au ça ?
parce que, en ce qui me concerne, le bébé pèse 38 kg avec les sacoches pleines, et je me demande si la pression n'est pas un détail au regard du peu de performance global de l'ensemble.
j'ai des pneus Schwalbe ; c'est marqué dessus " 50-559 (26x2.00)" et la pression constructeur va de 2 à 5 bars. je gonfle à 3 à l'avant parce que je n'ai pas de fourche télescopique et que j'ai constaté que ca faisiat moins mal aux bras d'avoir une pression faible. comme j'ai une selle suspendue, je gonfle un peu plus à l'arrière.
quand j'en chie dans les côtes, je ne suis pas sûr que le pneu y peut grand chose. Mais ce n'est pas un avis éclairé, juste une interrogation. si vous avez des arguments techniques, je suis preneur.
dans les côtes, à basse vitesse, vous luttez essentiellement contre la pesanteur : peu importe la pression des pneus, c'est ce qui vous alourdit qui vous ralentit. Sur terrain plat, vous luttez contre les frottements. Plus la vitesse est grande, plus les frottements sont dominés par l'air, et vous avez intérêt à adopter une position plus aérodynamique pour avancer. Mais à "vitesse moyenne", les pneus sont responsable d'une part non négligeable des frottements. A vous de choisir votre compromis : gonfler plus pour améliorer le rendement, ou gonfler moins pour améliorer le confort.
La bonne pression c'est quand le pneu prend sa forme de roulement , c.a.d quand il n'y a plus d'aplat au niveau du sol.
Plus le vélo est chargé, + la pression nécessaire augmente. (comme pour les voitures)
En dessous, le pneu est sous-gonflé et est plus dur à tirer.
Qui a déjà eu une crevaison lente comprend de suite.
Par contre sur-gonfler n'apporte pas plus de roulement.
Le pneu à déjà forme "ideale" et ne devient pas plus fin pour autant. Il devient simplement plus dur, donc moins confortable.
Le fait qu'il soit trop gonflé peut même lui faire perdre de la motricité si le revetement est bien chahotique. sans parler du surcroit de fatigue à cause des secousses.
Par contre, dans les ascensions un pneu dur à un meilleur rendement.
Chaque coup de pédale est une relance et les flancs du pneu font tampon et amortissent le rendement (une partie de l'effort sert à déformer le pneu)
Sur le plat, la plus grande partie de l'effort sert à entretenir le mouvement donc ce n'est pas important (à moins d'être un pro) mais si on à 2h de montée devant soi (15km) , cela peut faire réfléchir.
Donc je dirais:
1 - gonfler au minimum pour avoir le roulement idéal du pneu. ( plus de poids implique plus de pression)
2 - laisser de la marge pour avoir du confort et/ou de la motricité sur les revetements cassants
3 - Gonfler dur si on veut le moins de pertes possibles dans les relances ou les longs cols.
- accepter dans ce cas les inconvénients (cf2)
Si tu as un peu de temps, va voir ce site qui teste la résistance au roulement des pneus : route, vtt et cyclo (voir la liste sur les 3 tableaux sur la colonne de droite de la page d'accueil du site).
Le protocole d'essai est bien normé et permet de comparer les pneus entre eux, de voir également l'influence de la largeur du pneu et de la pression.
Pour les valeurs intrinsèques mentionnées (pour un seul pneu donc à multiplier par 2), même si le protocole essaie de se rapprocher de la réalité, il ne faut les considérer que comme des ordre de grandeur.
http://www.bicyclerollingresistance.com/
Contrairement à ce que je pensais, la resistance au roulement continue à diminuer (a charge égale) lorsqu'on continu à monter en pression.
Pour un marathon racer c'est 4w entre 4 et 6 bar.
C'est pas énorme (une dynamo de moyeu) , surement pas perceptible, mais réel.
Vraisemblablement la perte de confort est plus perceptible...
Si on rajoute en plus que le rendement augmente également, il ne reste plus "que" le confort et la motricité qui peuvent inviter à baisser la pression des pneus.
j'apprends plein de choses ! c'est très intéressant, merci pour tous ces détails.
Comme toujours il faut trouver le juste milieu...
du coup, je suis allé me balader sur les sites recommandés et j'ai vu que Scwalbe sortait des pneus sans chambres pour les VTC.
est-ce que c'est réellement mieux, surtout au regard des crevaisons ?
de ce que j'ai pu comprendre, il faut renouveler le liquide anticrvaison tous les 7 mois, ce qui n'est pas négligeable. ceci dit, si c'est l'assurance de ne pas crever ...
Pour les pneus sans chambre je n'ai aucun avis, mais à part le pneu "plein", je ne vois pas ce qui pourrait être à 100% increvable. En général le mieux est plutôt de dédramatiser en s'entraînant à la maison, en particulier pour remettre le pneu sur la jante sans aucun outil ; cela peut être difficile avec les tringles rigides.
Pour ce qui concerne les pneus tubless et d'après leurs utilisateurs, indépendamment de leur possibilité d'être moins vulnérables aux crevaisons, leurs avantages aussi est d'avoir un moindre poids, mais aussi une meilleure souplesse, donc plus de confort.
Par contre il faut bien sûr des jantes adaptées et injecter le produit une ou deux fois par an.
I’m planning to leave Nice for Toulouse around 10/15 and I’m looking for tips / great deals regarding:
- The route: I was thinking of taking Nice - Grasse - Draguignan - Salernes - Cadarache - Cavaillon - Arles, then the Camargue, Sète, and the Canal du Midi to Toulouse. The idea is to avoid high-traffic roads and too many steep climbs. Are there any spots to avoid or must-see stops? Since it’s been a while since I’ve been on the road, I was thinking that sleeping indoors might be preferable. If you have any budget-friendly accommodation suggestions along part of the route, don’t hesitate!
Thanks in advance, and if you’re in the area around that time, we could ride together... Ciao.
Hi,
what are the easiest ways to get back from Nordkapp without pedaling—
train, boat, or plane?
Has anyone already done this?
Thanks for sharing your tips!
Hi,
I need to arrive in Thessaloniki by bike at the end of September and I plan to head to Istanbul along the coast.
Could anyone help me pick the best route? Safety, difficulty.
Thanks in advance.
Marc
Hi everyone! Thanks for welcoming me to the forum :)
I’m preparing for a long trip heading to Nepal, with stops along the way depending on my mood, work needs, and the season. I cycle a lot, but this will be my first big touring adventure. I’d like to camp regularly to keep costs down, so I’ll be riding on all kinds of surfaces: smooth and rough roads, main highways and rocky paths to find my camping spots, flat terrain and the occasional steep slopes.
For my bike model, I’m prioritizing durability, versatility, and repairability. From that perspective, I prefer a steel frame and fork with rim brakes since I’m used to them. I’ve narrowed my choices down to four models:
- The VSF Fahrradmanufaktur T-700 LTD (1400 €): steel frame, aluminum fork, hydraulic rim brakes, 28" wheels, 40mm tires, 36 spokes (2 mm), lightweight rear rack (max 20 kg), no front rack included, smallest gear ratio of 0.72, weight of 13.9 kg.
- The VSF Fahrradmanufaktur TX-400 (2200 €): steel frame and fork, hydraulic rim brakes, 26" wheels, 50mm tires, 36 spokes (2.34 mm), front and rear racks included (40+18 kg), smallest gear ratio of 0.71, weight of 15.9 kg.
- The Genesis Tour de Fer 30 (2150 €): steel frame and fork, mechanical disc brakes, 28" wheels, 36 spokes, 40mm tires, front and rear racks included (27+10 kg), smallest gear ratio of 0.77, weight of 15.9 kg.
- The Rockrider ADTV 900 from Decathlon (1700 €): aluminum frame and fork, mechanical disc brakes, USB port, 28" wheels, 47mm tires, 28 spokes, front and rear racks included (40+20 kg), smallest gear ratio of 0.71, weight of 17.1 kg. This is the successor to the Riverside Touring 900, which was a hit.
I’ve got a few questions:
1/ Should I go for 26" or 28" wheels for my trip? 26" wheels seem better for rough terrain, but 28" wheels feel more comfortable on roads. I’ve also read that 26" tires/tubes are easier to find.
2/ Do you recommend a steel frame and fork over aluminum? I’m guessing a high-quality aluminum frame and fork would be better than a low-quality steel one, right?
3/ Regarding the smallest gear ratio, is 0.71 a good number for a loaded bike in the mountains?
4/ Finally, what do you think of these four models for my project? My heart leans toward the TX-400—it seems to combine the versatility and robustness I’m looking for. But the price difference with the T-700 LTD is making me think twice!
Thanks so much for reading and sharing your thoughts!
17 days, 1,400 km, and 17,500 m of elevation gain cycling in northern Vietnam! 🇻🇳 🚴🇻🇳
From the misty Fansipan to the breathtaking landscapes of the Ha Giang Loop, from remote villages to vibrant markets...
I cycled through the north of the country, getting up close with its people—through mud, heat, endless mountain passes, and unforgettable encounters.
Most importantly, I discovered a Vietnam far different from the usual tourist circuits.
Join me on this adventure through a video that captures these 17 days of travel. :)
If Vietnam calls to you, come ride a stretch with me!
Hi,
can anyone give us some tips on how to get to North Cape from Lyon Gerland?
What’s the best route to join the EuroVelo 7?
How many kilometers is it from Lyon to North Cape via EuroVelo 7?
The best month to leave—we’re thinking early May.
Thanks for any advice!
Looking for a female travel companion for a cycling trip (arriving by plane in Porto Alegre, Brazil, and cycling toward Montevideo, Uruguay, returning by plane to France from Buenos Aires, Argentina) – 1,500 km
Hello everyone!
I’m planning a cycling trip across Brazil, Uruguay, and Argentina, with a departure set for late October, November, or December. I’m looking for a travel companion to share this long-distance adventure with.
Experience:
I already have solid experience in bicycle touring in Georgia, Kazakhstan, and Kyrgyzstan. Currently, I maintain excellent physical condition by cycling an average of 250 km over 3 days per week (4 hours a day at 20 km/h).
The trip & the pace:
Daily pace: Between 50 and 80 km per day, to make steady progress while taking time to explore.
Accommodation: Flexible and authentic. We’ll alternate between wild camping, campsites, Warmshowers, small guesthouses, and budget hotels depending on opportunities and the weather.
Looking forward to reading your message and planning this amazing journey together!
Another long-time dream of Claudio’s: the Petit Mont Cenis pass and the dam at the eponymous lake.
A place where many Italians, including my father, worked in the 1950s–60s.
Faverges → St-Michel-de-Maurienne → Lanslebourg → Petit Mont Cenis → return. 315 km, 3 days. Bivouac at St-Michel-de-M.
Brouter link
Leg One: Faverges → St-Michel-de-Maurienne
Leg Two: St-Michel → Lanslebourg → Mont Cenis Lake → St-Michel
Leg Three: St-Michel → Faverges
And it finally happened in August 2026: in the Maurienne Valley about the famous cycle route known as the V67
🇷🇼 Cycling in Rwanda: 4 episodes, an off-the-beaten-path adventure
After 3 weeks and nearly 1,200 km by bike across Rwanda, I made 4 videos to share this adventure in a different way: the landscapes, the encounters, the villages… but above all, all those incredible scenes of everyday life.
The 4 episodes are available here:
👉 https://www.youtube.com/playlist?list=PLGnfbxjccWAg
The 4th episode focuses on rural Rwandan life: simple, authentic, and sometimes surprising scenes that you only truly discover when you take the time to travel by bike.
If you have a few minutes, let yourself be transported to Rwanda…
Hi,
We bought the MSR bike tent model (2-person + large awning that can fit 2 bikes) back in 2005. It’s served us really well, especially during a year-long trip in Africa. Now, one of the poles is broken, and we’d love to replace it since that’s the only issue with the tent—we still love it! The poles are 9.35 mm in diameter, with 8 sections of 49 cm and 2 sections of 28 cm. Total length when assembled: 416 cm. Actually, two large sections are broken: one straight and one curved. It’s a pain to find replacements since this model is no longer sold anywhere.
Would anyone have this model lying around unused and be willing to sell me a pole?
Hi everyone,
In early April, I’m redoing the Vélo Francette (La Rochelle to Ouistreham), and then I’d like to cycle along the Cotentin Peninsula (which I don’t know at all), follow the coast up to Cherbourg, and then head back down to at least Saint-Malo. I’d love to know if it’s pleasant for cycling—are the roads nice? Not too windy? What are the must-see spots? Any great campsites? All your tips and advice are more than welcome, and I thank you in advance.
After testing it for three years across various modes of transport, I’m sharing this video of a bike packing case. It’s made from recycled cardboard and shrink-wrapped, with adjustable thickness and added bubble wrap depending on the level of protection you want.
Installing spacers at the fork and chainstays makes the packaging compact. With the fifteen-odd euros for shrink-wrapping at the airport, this case travels really well.
https://youtu.be/_GDJi-GqmkM
- Low bulk (1.10m x 0.70m x 0.25m for a large frame), it fits vertically in train luggage compartments and the total dimensions (x+y+z) don’t exceed 2.40m.
- Two carrying solutions for public transport and easy handling by airport staff (no more tears in the cardboard from openings).
- Discreet packaging when dealing with bus drivers and train conductors, as it looks like an ordinary parcel.
- No need to return to the starting point to retrieve the case from your outbound trip, which you’d otherwise have to store somewhere, or deal with a bulky cover to pack in your panniers.
- You can still check tire pressure through the plastic film without damaging the packaging too much.
Drawbacks: Around 3 hours for this lengthy and meticulous process—removing the wheels, pedals, handlebars, and derailleur without misaligning them, then securing all components to the frame.
If you get a chance to test it, send me your feedback for future improvements.
I just took a trip in Tunisia from Tozeur to Douz, skirting Chott el Jerid to the south. I’m back with the urge to keep going further south via the 4x4 tracks to connect Douz to Ksar Ghilane. Has anyone driven this route recently or explored southern Tunisia?
Thanks for your tips!
fix
😎Fellow traveling cyclists or not, all of you who love travel, the pleasure of physical effort, nature, beautiful machines, people with true passions they seek to fulfill, and who also enjoy reading great literature about all this—the *200* magazine is for you just as it is for me. I should mention I have no financial or other interest in this (in an era where we accuse our politicians of all sorts of vile interests, I prefer to take precautions). I’ve been subscribed since the beginning, and every three months, I get my 130 pages of dreams (the magazine just went from 110 to 130 pages).
It covers everything from the trans-America route to the TCR (Trans Continental Race) from Belgium to a small town in Turkey, with mind-blowing averages—4,000 km and 80,000 m of elevation gain in 8 days and 15 hours for the winner. Let that sink in, and all of it without assistance—accepting a patch could penalize you. There’s also a story about crossing Iran, encountering one of the world’s most welcoming populations, following in the footsteps of Nicolas Bouvier, as well as retirees leisurely traversing France. The common thread in all these stories? Beautiful writing. Take, for example, a stunning article: *"Passengers of the Cold: From Edinburgh to Thurso, at the very north of Scotland, 550 km of moors, coasts, and icy wind. In Thurso, the road ends at a quay, facing the Orkney Islands. We wanted a November trip, off-season. We wanted to surprise winter. Just before the snow."* A sublime piece on the experience of facing adversity and the chance encounters along the road and in the elements.
Before I embarked on my own bike trips, I dreamed a lot about them—from the Atacama to the Gobi, along the Mekong, and not forgetting France. And now, these 130 pages every quarter keep those dreamy vibes alive through stories written in the most beautiful prose.
I’ll stop here because it might sound like I’m advertising, but if you don’t know *200*, I invite you to discover it. It’ll give you wings for the most incredible challenges or simply reinforce your desire for slow rides with your eyes open to others and nature.
A little news to wrap up: Axel Carion and a friend just broke the record for crossing South America from Colombia to Ushuaia in 59 days. On its own, that doesn’t mean much, but I can’t help it—it makes me dream. You should see how he talks about it, the flashes of that wild nature he’s stored away: a snowstorm at Paso Jama and the surreal sight of the suddenly snow-covered Licancabur!
Luc
PS: The magazine is called *200* because a day’s ride starts at 200 km—well, I’ve never done a ride like that since my longest was 167 km (with 18 kg of luggage, mind you), but why not one day? The magazine will explain how to tackle your first 200, and then the question in conclusion: when will you do your first 300?😏
I’ve got my flight ticket sorted—departing in mid-November and returning in mid-March. I’ll arrive in Santiago and leave from Buenos Aires.
I’ve already been to southern Argentina, specifically Torres del Paine National Park, and I’d love to go back to do the full W trek (I only did the shorter version last time).
I also want to do some hiking and maybe even tackle a summit. I climb and occasionally do some mountaineering, so I’ll definitely be going with a guide.
I plan to start around Temuco in Chile, with the idea of heading toward the lakes, then taking the Carretera Austral.
I’m not sure if I’ll go all the way to Ushuaia—it’s supposed to not be *that* worth it, except for the bragging rights of saying you’ve been to the end of the world.
I saw there are lakes in Argentina too.
I don’t have a precise itinerary, but what I’d love is, once I reach the southernmost point of my trip, to take a mini-cruise to see some wildlife. Any tips for that?
What kind of sleeping bag did you take? Is a 0°C (32°F) one enough?
And one last question: white gas stove or can I get by with my gas stove?
I'm developing a free and open-source web app for planning walking and cycling trips (and even car trips). You can create a route by clicking directly on the map to add waypoints, and it can consist of multiple stages. The app provides tools to edit the stages and the overall route, and to display useful information (distances, altitudes, and elevation changes). A relief profile can be shown as a graph for a specific stage or the entire route.
Once the route is ready, it can be exported as a GPX file, which can then be used with a GPS or a mobile navigation app.
The app is built in JavaScript and runs entirely in the web browser. It uses the Leaflet library and several OpenStreetMap-based services. Initially developed for my personal needs (I enjoy hiking and cycle touring), I’d be happy to share it with anyone who might find it useful. It’s free to use, doesn’t require an account, and the source code is available.
hello fellow cycling enthusiasts
here’s a travel journal of the cycling tour through the Rhône-Alpes Auvergne region by Claudio
zouli
it was the plan
http://cbandiera.free.fr/parcours/auvergne-Ralpes/
the trip was completed
story being posted online soon
1100 km in 11 days
beautiful and varied regions
Hello,
We’d like to go on a 3- to 4-month bike trip starting in December, crossing from Assam (northeast India) to New Delhi via Nepal.
Are there routes with light traffic along the Brahmaputra and through Nepal?
We’re also looking for any info on accommodations, wild camping, local interactions, etc.
Thanks,
Michel
I’m planning to cycle from Morlaix to Brest (via Roscoff and the V45 coastal route). We’ll start riding on August 16th for 13 days (with stops for island visits, surfing, etc.). Is there a lot of traffic at this time of year? I’ve got two kids, 11 and 13, and we don’t like riding in the middle of cars (we’ve already done the Vélomaritime—Caen to Cherbourg—the Loire route from Orléans to Saumur, the Vélodyssée from Nantes to Royans, and the canals like the Nivernais and Bourgogne, where there were plenty of bike-only lanes, which isn’t the case on this route).
Thanks for your help if you’ve already done this route in late August!
Virginie
Hi there,
I’ve been road cycling for several years, and I’m about to switch to gravel in the next few days—I’m waiting for my bike, which should arrive this week.
I’m planning a bikepacking trip in a few weeks along the Véloroute V81, also known as the Vélosud, from Biarritz to Le Barcarès.
Has anyone here already done this route? Any info is welcome, whether it’s about the route itself, gear, or accommodation. I’ll prioritize staying with locals as much as possible. On that note, I just signed up for the brand-new site *Guidon et Couette* ((www.guidon-et-couette.fr)), which offers free accommodation between cyclists across the country, but there’s almost no one listed along my route!
Thanks in advance.
Laurent.
Hi there, I’m planning a cross-Canada bike trip, and I’ve got a question that might seem silly, but could someone tell me how to pack a bike (in a box, with a fragile sticker... I don’t know) for a flight? Thanks in advance!
This summer, we’re planning to cycle along the EV 19 that follows the Meuse River from Langres all the way to Rotterdam.
My question is about getting back to Nantes.
Do any of you know what the best return option might be? I’d love to hear about your experiences.
I saw that FlixBus doesn’t take bikes.
By train, I think it’s possible but would involve multiple local trains.
We were also wondering if there’s a boat from Rotterdam to Saint-Nazaire that could take passengers with bikes.
Any tips or experiences you can share would be really helpful—thanks in advance!
Have a great evening
I’ve gotten used to crossing Europe by bus to return by bike.
It was really convenient to take the bike without having to disassemble it.
But FlixBus no longer accepts bikes...
What alternatives do you know about?
Thanks.
Hi there,
I’m planning to ride the Dutch section of the EuroVelo 19, from Maastricht to Rotterdam.
Since it’s too complicated to bring my bike on the train, I’m looking to rent one locally.
I’d love any tips or bike rental shop recommendations—I’m struggling to find options even in Rotterdam.
The plan is to rent in Rotterdam, take the train to Maastricht with the bike, then cycle back to Rotterdam.
Thanks in advance for any advice or suggestions!
Nath
I’m planning to build a new touring bike.
I want to prioritize lightness.
That said, I’m tempted by a suspension fork that could offer some comfort on rougher roads.
The recent appearance of gravel suspension forks on the market might meet my needs—at least on paper.
I’m particularly considering the RockShox Rudy Ultimate XPLR fork.
Unlike MTB forks, its travel is short: either 30 mm or 40 mm.
It weighs 1400 g, which is 400/500 g more than a steel fork.
Any thoughts or real-world feedback on this?
I’m also wondering about the durability of magnesium (lower leg) for long-distance bike touring.
And what’s the impact of skipping the manufacturer-recommended maintenance every 50 and 200 hours? That’s bound to happen on a long trip unless you carry extra gear.
More generally, how reliable are these kinds of forks?
