- Le 1er :
Ma copine a monté des pneus Schwalbe Marathon Plus en 700x32C sur ses jantes de VTC (dimension indiquée dans la jante : 25x622).
Après montage, on a l'impression que la jante est un peu large par rapport au pneu.
Nous avons jeté un coup d’œil sur ce tableau qui indique (si nous avons bien compris qu'il faudrait des pneus de largeur 44 minimum ???).
Pourriez vous SVP nous éclairer ? Merci !
- Et le 2ème :
On a acheté 2 chambres à air chez Décath (700x25-32 Presta) et les 2 se sont ouvertes de manière étrange (trou de plusieurs millimètres sur surface extérieure (coté pneu)) sans même avoir roulé avec. On a bien fait attention à ce que la chambre ne soit pas pincée, ni vrillée.
Par contre, j'avais une chambre à air identique en rab qui semble toujours tenir le coup...
On a pensé à une mauvaise série mais les vendeurs de Décath nous ont dit ne jamais avoir vu ça en xx années de métier.
Ils nous ont conseillé de mettre des chambres à air (700x35-40 Presta), sachant que les pneus sont en 32...
Qu'en pensez vous ?
Merci d'avance pour vos conseils, qui pourront peut-être éviter à ma copine (au pire) une belle vautre en descente et (au mieux) d'abimer ses jantes ! 🤪
Ce qui est bizarre est qu'avant il semblait monté avec des 37-622, soit deux millimètres de différence.
Si ça a tenu comme cela, cela tiendra.
Pour ton deuxième problème, aucun vendeur de chez TrucThlon ne te dira que ce qu'ils vendent est vraiment de mauvaise qualité et qu'il ne faut pas acheter chez eux.
Soit tu les as mal montés et fait une erreur, soit c'est un défaut des jantes, si tu es sur de toi, il n'y a aucune raison de se laisser berner.
Pour les nouvelles chambres, il vaut mieux des chambres ajustées au pneu, en théorie on risque des problèmes, même si ce n'est jamais le cas.
Salut seitan, jete un oeil au tableau, (dans , francais en suite technique) ci dessous ca peut t'aider au choix des pneus par rapport à la largeur de la jante.
Si ta jante mesure bien 25mm, ton pneu n'est pas assez large tu risque de déjanté, plus difficulté de montage.
La chambre à air, le déchirement c'est souvent dut au stockage long dans un endroit humide, si tu doit stocker des chambre à air, enduit les de talc, pour évité cela et déplié.
Quand à la taille des chambre bien évidament ca doit corréspondre à la taille des pneus.
par ex: 25x32 pour un pneu de 32, pour les valves tu as les presta petite valve ou schrader grosse valve, celle ci doit corréspondre au trou de la jante, en générale petit trou presta, grand trou schrader.
Attention au sens du montage du pneu sur les schawble tu as une fléche de rotation, mais sur le site officiel tu trouvera toutes les techniques.
A plus tattoo.man.
http://translate.google.fr/...x%26rlz%3D1I7RNWN_fr
avec les chambres decat , , que des emmerdes !!! a eviter
BERNARD "Aucun conseil n'est plus loyal que celui qui se donne sur le navire en péril.
Voiture : Invention ingénieuse, permettant de contenir 110 chevaux dans le moteur et un âne au volant.
Bonsoir,
En rando courant juillet, deux chambres Décat 700 23-28 neuves montées sur pneu Michelin City protec 700 28C ont éclaté au gonflage..😕 . J'ai alors monté une vieille Michelin A2 qui avait déjà 2 rustines... 1400 km plus tard toujours pas de problème.
Ce n'est qu'un exemple, pas (encore) une loi générale.
Sur cette page en bas un tableau qui donne la correspondance largeur intérieure de la jante / pneu conseillé.
http://sheldonbrown.com/tire-sizing.html
OK, nous éviterons donc désormais les chambres à air décath...
@Tatooman : les embouts "schrader" de chambre à air, rentrent dans les trous des jantes. Décath' nous avaient pourtant conseillés des "Presta", on trouvait ça bizarre tout ce jeu au niveau du trou de la valve, on s'était dit que c'était peut-être pour ça qu'il y avait une bague vissable au niveau de la valve...
@Tatooman et Hush : merci pour vos 2 tableaux. Ils sont sensiblement les mêmes que celui que nous avions consulté : pour des jantes de 25mm, des pneus d'au moins 44mm semblent préconisés. Ca nous semble super large pour un VTC, non ? Dire qu'on hésitait à monter du 28mm ou du 35mm !
Est ce que les jantes de ce VTC sont anormalement larges ?
Je vais prendre une photo et la poster pour que vous vous rendiez compte.
Pour se référer au tableau de Sheldon Brown, il faut prendre en considération la largeur intérieure de la jante. Je ne suis pas certain que ta jante fasse 25mm de largeur intérieure, il faudrait mesurer.
Je viens de prendre quelques photos et viens de me rendre compte que l'inscription à l'intérieur de la jante (25x622) ne correspond pas à l'inscription sur l'autocollant collé sur la jante, visible sur la photo (622x20) :
J'ai mis une pièce de 2 euros pour avoir un semblant d'échelle ! :
Vos yeux avertis sauront-ils nous renseigner ? 😉
Voilà une photo de ma jante beaucoup plus fine (et sale !) (pneu d'origine en 700x28 également - vélo Trek 7.3 FX) :
Connaissant bien les produits, ca peu arriver, après je confirme qu'en plusieurs milliers de changements dechambres à décath j'ai pas eu beaucoup de cas comme ça.
Et dans 99,99% des cas c'est lié à une erreur de remontage (flanc mal engagé) et sous pression ça pete.
Une chambre c'est placé dans un contenant le pneu, donc si le pneu ne bouge pas (ne de jante pas) ça n'éclate pas.
Après même en étant pro on se fait piéger une fois ou deux par an... ça arrive.
Je suis pas un adorateur des produits décath, mais j'ais fais des milliers de km avec leur chambres à air à 2 euros et ça tient bien.
Le pneu compte pour beaucoup plus que ce que vous pouvez penser.
Après je n'écarte pas le défaut ça arrive aussi et dans ce cas suffit de se repointer au magasin avec la chambre pour repartir dans la minute suivant avec une neuve 😉 Je l'ai toujours fais avec plaisir car c'est assez rare.....
OK, c'est bon, tout semble rentré dans l'ordre, nous sommes allés chez un vélociste :
- qui nous a dit que les pneus étaient peut-être un peu fins mais que ça allait le faire.
- chez qui nous avons acheté 2 chambres à air schwalbe, qu'on a monté dans la foulée, puis testé sur une cinquantaine de km, tout roule ! 🙂
@inoga : merci pour tes retours. Nous sommes quasiment surs d'avoir correctement monté les 2 chambres à air Btwin qui ont eu successivement le même problème au même endroit sur 2 jantes différentes. Je pense qu'il s'agissait d'une mauvaise série. Décath' nous a d'ailleurs remplacé sans problème les 2 produits (qu'on garde du coup sous le coude en rab en cas de pépin).
OK, c'est bon, tout semble rentré dans l'ordre, nous sommes allés chez un vélociste :
- qui nous a dit que les pneus étaient peut-être un peu fins mais que ça allait le faire.
- chez qui nous avons acheté 2 chambres à air schwalbe, qu'on a monté dans la foulée, puis testé sur une cinquantaine de km, tout roule ! 🙂
@inoga : merci pour tes retours. Nous sommes quasiment surs d'avoir correctement monté les 2 chambres à air Btwin qui ont eu successivement le même problème au même endroit sur 2 jantes différentes. Je pense qu'il s'agissait d'une mauvaise série. Décath' nous a d'ailleurs remplacé sans problème les 2 produits (qu'on garde du coup sous le coude en rab en cas de pépin).
Merci encore pour votre aide !
Maintenant que vous avez installé des chambres à air Schwalbe.. pourquoi diable garder les Btwin, 🤪 est-ce la une façon d'investir dans de futurs problèmes garantis...
Emportez avec vous, deux autres chambres air Schwalbe dans vos bagages.... vous dormirez mieux.
Eh oui Btwin c'est bien pour la balade, mais en gomme et chambre difficile de trouver plus fiable que Schwalbe. J'étais sponsorisé par decathlon pour mon périple en 2008 et pourtant c'est un sponsoring Schwalbe que j'ai eu pour les pneus et chambres merci encore à eux au passage c'est une super marque qui mérite bien sa réputation.
De retour de notre périple à bicyclette. C'était très chouette !
RAS concernant les pneus, aucune crevaison.
Merci encore pour vos conseils (et pour la fiabilité des produits schwalbe !) 🙂
De retour de notre périple à bicyclette. C'était très chouette !
RAS concernant les pneus, aucune crevaison.
Merci encore pour vos conseils (et pour la fiabilité des produits schwalbe !) 🙂
Bonjour Seitan, qu'avais tu comme modèle de pneus schwalbe ?
De retour de notre périple à bicyclette. C'était très chouette !
RAS concernant les pneus, aucune crevaison.
Merci encore pour vos conseils (et pour la fiabilité des produits schwalbe !) 🙂
Bonjour Seitan, qu'avais tu comme modèle de pneus schwalbe ?
J'ai commandé sur internet deux pneus SCHWALBE marathon 20 x 1.75 pour mon Dahon Vis P18 mais impossible de les monter dessus, la jante me parait pas assez…
Je compte acheter un velo en allemagne, ce sera un vtt avec donc des roues "normal" de 26'' mais le vendeur allemand me demande quel largeur de jantes je…
Pour vous quelle doit être la dimension idéale requise pour la largeur du guidon en Vélo de randonnée? Je mesure 1,76 et mon guidon fait 71 cms, je me demande…
J'ai lu diverses choses sur le forum, mais je n'ai pas trouvé suffisamment de réponse à cette question: Quelle largeur de pneus prendre pour mon VTT 26 pouces?…
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 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’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 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.
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?
Hi everyone,
I wanted to share with you the incredible feat my friend José, who’s 72 years old, is currently undertaking. He left Auterive near Toulouse on Monday, May 18, 2026, on his non-electric bike, heading for the North Cape in Norway!
You can follow his route on the link below—he’s currently in Sweden:
https://thierry-thomas.travelmap.net/jose-de-toulouse-a-nord-cap-2026
You can zoom in on the map and click on each stopover town to see the photos
I’m making an exception and creating a separate post this time, since it’s all about France. In May, we spent a week in Provence, specifically in the Luberon, exploring the cycling routes *Autour du Luberon à Vélo*, the *Véloroute du Calavon* (part of EuroVelo 8), and the shorter *Les Ocres à Vélo* route. Together, they gave us an amazing journey through rolling hills, vineyards, lavender fields still green in spring, and some of the most stunning landscapes in southern France.
It was, of course, the perched villages that impressed us the most. We visited Gordes, Roussillon, Bonnieux, Lacoste, Lourmarin, Ménerbes, Oppède-le-Vieux, Cucuron, and Lauris. Many of them are among the most beautiful villages in Provence, and it’s hard not to agree with that reputation.
One interesting point is the route of EuroVelo 8 in this part of the region. The official path mainly follows the old railway line of the *Véloroute du Calavon*, which is very comfortable and safe. But in our opinion, cyclists traveling EuroVelo 8 around the Mediterranean would discover even more treasures if the route passed through villages like Bonnieux, Lacoste, or Oppède-le-Vieux.
We were also pleasantly surprised by how safe cycling felt. Most of the route takes small local roads, but traffic is light, drivers are respectful, and road design really takes cyclists into account. It’s one of those places where you can ride peacefully even without separated bike lanes.
Our full story:
Around Luberon by bicycle - the most beautiful villages of Provence
You can also find all our cycling travel stories on the forum:
Cycling Thread - Europe’s most beautiful bike routes
Hi there, we’re a group of 4 cyclists looking to get from Treviso in Italy to Munich with our 4 non-folding bikes. It seems complicated! Are there any solutions? Thanks so much.
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
Hi there, we’re planning a Munich to Venice bike trip at the end of June 2026. Getting back from Venice to Toulouse by train with 4 bikes isn’t straightforward. What return options have others who’ve done this trip chosen? Any tips or great deals would be much appreciated. Thanks a bunch! !
Hi everyone,
Happy owner of a Pegasus Estremo bike with a Rohloff hub, which is giving me trouble with the SF11-NCX-FT-E-LITE 700C TS 300/0 fork (serial number TD01329060). It’s starting to show its age, and I’d like to repair it to extend the life of my beloved bike.
The suspension is gone, and there’s an oil leak from the seals.
Does anyone know how to repair it? Where can I find parts that are about fifteen years old? Or where to find an identical replacement fork? Just to clarify, the Magura HS11 brakes are mounted using Firm Tech, meaning they’re on pivots behind the fork, facing the frame.
Hi, I'd like to know if anyone has done this route recently or has reliable info.
Does the track exist, and most importantly, is there sand (for biking)?
Any info is welcome.
Cheers,
diego ambilobe: mangaoka, manondro, ramena
vohemar sambava: masondrono, tanambao
Hi there,
New to bike touring,
I’d love to start with a section of the Via Rhona to explore and share (route to be decided).
Looking forward to exchanging tips!
I’m landing in Madagascar with a buddy before the end of April 2026. We’re planning to bike around for about twenty days or so. We don’t have a specific goal other than exploring the country and meeting the locals.
Ideally, we’d prefer a loop route starting from Antananarivo with a good chunk of it along the coast. On the bike side, we’re used to riding 6 to 8 hours a day, depending on the needs, encounters, and mood 😉 Any feedback or tips from trips around this length?
A big thank you to Lazarou for all the info you share in this forum!
I'm passionate about Morocco, which I cycled through back in 2009.
Last year, my wife and I explored the High Atlas by tandem. Completely smitten, we're heading back in April (Anti Atlas) and May (High and Middle Atlas), still on our tandem.
Do you have any info on the track between Amezri and Ali Ait Nito? Are the river crossings in the Tessaout still there? It's not easy to navigate with a loaded tandem... especially if the river level is high due to this year's heavy snowmelt!
Thanks in advance for any tips you might have, and best wishes for health in this new year!
Claudio specializes in the route of the Savoie lakes
Here are his travels
Between Bornes, Chartreuse, the Savoie foothills, and Dauphiné
Five lakes: Léman, Annecy, Paladru, Aiguebelette, Bourget, not to mention a few ponds along the way
Plenty of accommodation options: camping, hotels, and more...
A lovely route not far from his place
Rural and quite peaceful
A road cycling route created by Serge B...
First of all... happy New Year! Wishing you great roads in 2017!
I’ve been traveling for a few years now with a high-quality mountain bike, but it’s equipped with hydraulic disc brakes. I live (pedal) with the constant worry of a breakdown (leak, air bubble, heat causing the fluid to...). My bike mechanic tells me it’s impossible to switch them out for V-brakes.
What do you all think? Am I taking a big risk continuing (alone) with these brakes? Thanks in advance for your great tips!
First post here to share a quick recap of our west-to-east bike trip along Algeria’s coast in January 2025.
It was just the two of us—my partner and I—with French passports and not a word of Arabic. No friends or welcoming hosts in the country.
Under those conditions, we’d strongly advise against going.
Our original plan was to follow the coast from Algiers to Tunis. We ended up cycling from Algiers to Béjaia, then took the train from Béjaia to Annaba (with a stop in Constantine), and finally biked to the border.
We were tailed by police the whole way—whether on our bikes, on the train, or even on foot while exploring towns. On top of that, we couldn’t wild camp and were limited to the few state-approved hotels that accept foreigners. Under those circumstances, connecting with locals was especially tough.
With such an omnipresent and intrusive police presence, we’d definitely recommend against this destination for bike touring. A really sad situation that completely cuts you off from the local population...
We’d been warned, we went to check it out, and we weren’t disappointed!
Hi there,
I’m planning the route to cycle from Lille to Nordkapp with my partner.
Duration: 3 months, from May 1st to July 31st, 2026.
In the attached details below, I need to add some "non-riding" days (rest days, basically).
So I’m looking to "shorten" the trip by taking ferries or trains for some stretches. Which areas could I skip?
Thanks in advance for your great tips.
Have a good evening.
https://www.komoot.com/fr-fr/collection/4023980/-lille-cap-nord-1er-mai-au-31-juillet-2026?ref=collection
I’m planning to bike back from Poland this summer. Does anyone know a way to ship it there without having to take it apart? Otherwise, it’s a real hassle to fine-tune all the settings before departure!
Thanks in advance.
Hi, has anyone recently bought Primus or Butagaz gas, possibly puncture-style, in Dubrovnik or the surrounding area? Same question for Albania... thanks. aichatou
Just a few words about the loop I did by bike in Yunnan.
Entry and exit
I entered China through the Sino-Vietnamese border crossing at Lào Cai / Hekou under the 30-day visa exemption currently available to French nationals and others.
The process was simple and quick. A Chinese police officer even helped me complete my electronic pre-registration at a computer kiosk. I wasn’t aware this formality was required—it’s similar to Thailand’s TM6.
No issues with the bike.
I left the country via the Sino-Laotian border crossing at Mohan / Boten.
The atmosphere was a bit chaotic there, but again, no problems with the bike.
The timing
I visited Yunnan in February 2026.
Weather-wise, at higher altitudes (between 1,500 and 2,000 meters), it was around ten degrees at night and in the mornings, and around twenty degrees at the hottest part of the day.
I had two days of rain, so I took the bus to keep moving. Otherwise, clear blue skies.
Culturally, Chinese New Year fell on February 17th (and the 15 days following), right in the middle of my trip. Because of this, my take on the traffic might be off.
Accommodation and food
I always found a hotel to stay in for prices ranging from 8 to 15 €. Except in Kunming (the capital), where many hotels were fully booked (Chinese New Year). I ended up at a 100 € hotel with great value for money.
A bowl of noodles costs about 1.5 € on average.
Onboard electronics
Since my smartphone doesn’t support eSIMs, I subscribed to a China plan with my carrier. Otherwise, for much cheaper, Alipay offers eSIMs for foreigners that allow access to services usually blocked for Chinese users (WhatsApp, Facebook, etc.).
An internet connection is essential for paying with Alipay or WeChat, as this payment method is widespread.
I only managed to use Alipay.
Either way, always carry cash because sometimes there’s no signal, or the merchant only accepts WeChat.
Also, it’s best to bring a power adapter when you arrive rather than struggling to find one.
Traffic and roads
The Chinese aren’t reckless drivers. They follow traffic rules and watch out for cyclists. This is slightly less true in Xishuangbanna (the region bordering Myanmar and Laos).
In urban areas, there are almost always wide bike lanes, separated from other roads, where bikes, electric mini-scooters, and scooters share the space pretty harmoniously.
The roads are in great condition, and traffic is generally manageable—even light—except for one stretch (Eshan -> Yangwu).
Most traffic is absorbed by expressways, China’s equivalent of highways: toll roads that are off-limits to slow vehicles.
You’re never far from these expressways; sometimes you even ride alongside them, which can be noisy at times.
The climbs are usually reasonable, around 5% to 6%. From what I remember, the steepest section was between Menglun and Mengla, with gradients of 8% to 10%, sometimes more.
Riding at these altitudes—though modest—took a bit of getting used to.
The route
I didn’t plan anything in advance. My only goal was to reach Kunming. I don’t know why, but just hearing the name of that city, like Yunnan, always felt dreamy to me.
Hi! I’m planning to visit the Stockholm Archipelago by bike in early April.
Do you know if the boats will be running between the different islands at that time of year? For those who’ve already been, all your tips and recommendations are welcome—accommodation, etc. Also, do you know where I can rent a bike in Stockholm? Thanks so much in advance for your help!
Hello there, pedal-powered Young Boys!
Claudio (still from Faverges)
dreaming about a cycling getaway in Italy from Faverges (train all the way to Turin)
from Turin down to Venice along the Po River and back via the Padana (Alta Italia da attraversare – Northern Italy to cross)
The tricky part is getting from Chioggia to Venice.
I read it’s possible by hopping on a boat from island to island,
but it sounds a bit stressful.
Has anyone already tackled this route?