Tube size, 700c 28, 32 , 35
09-09-19, 11:49 AM
#1
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Tube size, 700c 28, 32 , 35
Hi everyone
My wife's bike is 700c wheels and 28mm tires. I want to get a pair of 32mm or 35mm tires for her to swap for those 2 or 3 times a year we may want to ride in gravel trail paths.
My question: is the tube size the same? If so I would just change her tires as needed.
My wife's bike is 700c wheels and 28mm tires. I want to get a pair of 32mm or 35mm tires for her to swap for those 2 or 3 times a year we may want to ride in gravel trail paths.
My question: is the tube size the same? If so I would just change her tires as needed.
09-09-19, 12:04 PM
#2
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Tubes are often labeled for use with a range of sizes. Find one with the range that includes 28 - 35 and the answer is yes.
https://express.google.com/u/0/produ...RoCp70QAvD_BwE
https://express.google.com/u/0/produ...RoCp70QAvD_BwE
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09-09-19, 12:37 PM
#4
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Your tubes should work fine.
However, since they are stretched "thinner", you have a bit less flat protection and faster air "seepage".
If these are "really old" tubes, they may not handle stretching so well.
However, since they are stretched "thinner", you have a bit less flat protection and faster air "seepage".
If these are "really old" tubes, they may not handle stretching so well.
09-09-19, 02:23 PM
#6
Senior Member
One complicating factor is that you need to find a tube that is not only in the desired width range, but also has a valve stem that is long enough for your rims (valve extenders are a suboptimal solution). Schwalbe SV17 and SV18 tubes have an exceptionally wide width range -- something like 28-42, and the SV17 is available with stems up to 60mm long, IIRC. They can be pricey though.
09-09-19, 02:43 PM
#7
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Will the wider tires fit the frame?
09-12-19, 02:26 PM
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presta valves?
https://www.amazon.com/PACK-Tubes-PRESTA-Bicycle-Sunlite/dp/B011LMAM9E/ref=sr_1_8?keywords=Schrader+Valve+Tubes+700+x+28-35+48mm+stem&qid=1568319789&s=gateway&sr=8-8
that link shows choice of stem length
32mm schrader stems:
https://www.amazon.com/PACK-28-35-SCHRADER-Sunlite-Bicycles/dp/B00TP26MGK?source=ps-sl-shoppingads-lpcontext&psc=1
48mm schrader stems:
https://www.amazon.com/Kenda-28-32c-48mm-SCHRADER-Valve/dp/B002SQRV10/ref=asc_df_B002SQRV10/?tag=hyprod-20&linkCode=df0&hvadid=312094794461&hvpos=1o6&hvnetw=g&hvrand=11481567190829377065&hvpone=&hvptwo=&h vqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9001907&hvtargid=pla-568499102529&psc=1&tag=&ref=&adgrpid=62497261819&hvpone=&hvptwo=&hvadid=312094794461&hvpos=1o6&hvnet w=g&hvrand=11481567190829377065&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9001907&hvtargid=pla-568499102529
https://www.amazon.com/PACK-Tubes-PRESTA-Bicycle-Sunlite/dp/B011LMAM9E/ref=sr_1_8?keywords=Schrader+Valve+Tubes+700+x+28-35+48mm+stem&qid=1568319789&s=gateway&sr=8-8
that link shows choice of stem length
32mm schrader stems:
https://www.amazon.com/PACK-28-35-SCHRADER-Sunlite-Bicycles/dp/B00TP26MGK?source=ps-sl-shoppingads-lpcontext&psc=1
48mm schrader stems:
https://www.amazon.com/Kenda-28-32c-48mm-SCHRADER-Valve/dp/B002SQRV10/ref=asc_df_B002SQRV10/?tag=hyprod-20&linkCode=df0&hvadid=312094794461&hvpos=1o6&hvnetw=g&hvrand=11481567190829377065&hvpone=&hvptwo=&h vqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9001907&hvtargid=pla-568499102529&psc=1&tag=&ref=&adgrpid=62497261819&hvpone=&hvptwo=&hvadid=312094794461&hvpos=1o6&hvnet w=g&hvrand=11481567190829377065&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9001907&hvtargid=pla-568499102529
Last edited by rumrunn6; 09-12-19 at 02:31 PM.
09-12-19, 08:22 PM
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Hi everyone
My wife's bike is 700c wheels and 28mm tires. I want to get a pair of 32mm or 35mm tires for her to swap for those 2 or 3 times a year we may want to ride in gravel trail paths.
My question: is the tube size the same? If so I would just change her tires as needed.
My wife's bike is 700c wheels and 28mm tires. I want to get a pair of 32mm or 35mm tires for her to swap for those 2 or 3 times a year we may want to ride in gravel trail paths.
My question: is the tube size the same? If so I would just change her tires as needed.
Frankly, I use 23mm tubes in 35 to 37mm tires on a regular basis. They are lighter and smaller in a bag.
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09-13-19, 12:06 PM
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I would get new tubes with the new tires, along with one spare tube.
Unless these are tires you are going to fold or coil up to carry along on a tour, you can leave the mostly-deflated tubes in the tires when they are removed and put them aside as a set. Then when you go to switch back, also leave the new tubes with the new tires.
Unless these are tires you are going to fold or coil up to carry along on a tour, you can leave the mostly-deflated tubes in the tires when they are removed and put them aside as a set. Then when you go to switch back, also leave the new tubes with the new tires.
09-13-19, 02:41 PM
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A 28 mm tube will fit in a 35mm tire quite easily. I wouldn’t worry too much about whether there is any change in flat protection or in air diffusion. The tube doesn’t provide all that much flat protection and the rate of diffusion may be higher but not by that much.
Frankly, I use 23mm tubes in 35 to 37mm tires on a regular basis. They are lighter and smaller in a bag.
Frankly, I use 23mm tubes in 35 to 37mm tires on a regular basis. They are lighter and smaller in a bag.
Cheers
09-15-19, 09:28 AM
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Tubes, by the way, don’t have “seams”. The tubes are formed in a injection mold and are taken out as a single unit. The lines that might be seen as a “seam” are channels used in the mold to spread the injected rubber around the mold.
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09-15-19, 12:00 PM
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You won't have a problem with a 28mm tube in a 32mm tire. Can't imagine you'd have a problem with a 35mm tire either, though I've never done it.
The idea of a 23mm tube in a 37mm tire freaks me out. Not saying it can't be done, but I'm not gonna try.
The idea of a 23mm tube in a 37mm tire freaks me out. Not saying it can't be done, but I'm not gonna try.
09-15-19, 12:21 PM
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It is interesting to note that for some reason, while easy to find 20-25 or what not tires, the 28-37 tube availability is few and far between. Would seem a popular tube size for gravel riders.
Anyway.. these work well, but (as referred to) can only find from a UK seller
Conti Tour28 Slim 28-37
Anyway.. these work well, but (as referred to) can only find from a UK seller
Conti Tour28 Slim 28-37
09-15-19, 02:15 PM
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See --https://www.youtube.com/watch?v=ZKPcSs5Rl7s about 2:17 and 3:15 (among many sources).
09-17-19, 05:52 PM
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That said, try and find the seam on a tube. Next try to tear it apart. The way that the seam is welded together, it is not particularly weak nor likely to tear. And, in my defense, most people have the idea that the channels on the outside of the tube are “seams” which they are not. The arrows in the picture point to mold channels, not seams.
Untitled by Stuart Black, on Flickr
Inside you can see that they are simply impression
Untitled by Stuart Black, on Flickr
Here’s the only seam on the tube from the outside and inside
Untitled by Stuart Black, on Flickr
Untitled by Stuart Black, on Flickr
Untitled by Stuart Black, on Flickr
Looking closely at the seam, it would take a whole lot more expansion to pull that seam apart than adding 0.5” to the diameter of the tube. There’s really nothing to pull the pieces of the tube apart.
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Dinosaurs in Colorado A mountain bike guide to the Purgatory Canyon dinosaur trackway
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Picking the Scablands. Washington and Oregon, 2005. Pie and spiders on the Columbia River!
Stuart Black
Plan Epsilon Around Lake Michigan in the era of Covid
Old School…When It Wasn’t Ancient bikepacking
Gold Fever Three days of dirt in Colorado
Pokin' around the Poconos A cold ride around Lake Erie
Dinosaurs in Colorado A mountain bike guide to the Purgatory Canyon dinosaur trackway
Solo Without Pie. The search for pie in the Midwest.
Picking the Scablands. Washington and Oregon, 2005. Pie and spiders on the Columbia River!
