General Cycling Discussion - 700c tires

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humantorch39
10-10-11, 02:17 PM
If a bike comes with 700x 28c tires what is the largest tire you could put on the wheel?
hybridbkrdr
10-10-11, 02:21 PM
There's a chart on sheldonbrown.com for safe tire sizes. In any case, if you're sometimes lazy like me, you could cut a piece of cardboard to measure the outside width of the rim. Then you can deduct 4 or 5mm to estimate the inside width and look at the chart.
wolfchild
10-10-11, 02:24 PM
It all depends on how much clearence you have in your frame and fork and brake calipers(rim brakes).
Jeff Wills
10-10-11, 11:01 PM
If a bike comes with 700x 28c tires what is the largest tire you could put on the wheel?
On the wheel by itself, you could put up to a 700 x 60mm tire: http://www.universalcycles.com/shopping/product_details.php?id=16624 , but it would take a very special bike to accommodate a tire that big. As others said, the limitation is usually the clearance of the frame and fork.
prathmann
10-10-11, 11:48 PM
On the wheel by itself, you could put up to a 700 x 60mm tire: http://www.universalcycles.com/shopping/product_details.php?id=16624 , but it would take a very special bike to accommodate a tire that big. As others said, the limitation is usually the clearance of the frame and fork.
Agreed. I just had some 38mm tires on a bike/wheel that originally had 23mm. That was as wide as I could go without running into a clearance problem with the chainstays. Check how much clearance you have with the 28 mm tires at the fork and chain/seat stays and at the brakes (if calipers). That should give an indication of about how wide a tire you can use without having it rub anywhere. Every extra 2 mm of tire width will reduce the clearance on each side by about 1 mm.
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