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Old 08-19-11, 04:29 PM   #1
JusticeZero
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comparing 700c vs 26" tire widths

Annoyed looking at more road type bikes, because I simply cannot wrap my head around the tire width measurements.

If a 26x1.0 tire is definitively too dang narrow and a hazard to ride on a given surface, and a 26x1.5" tire is perfectly fine, and a 26x1.25 is probably still too narrow, what size of 700x?? tire do I need to have a safe ride for a clyde over pavement so bad that it's a huge relief to hit cracked and worn chipseal?
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Old 08-19-11, 04:31 PM   #2
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what rim? if the rim say is a CR18 Sun on both , then you can more reasonably compare.

your frame clearance is the limiting factor I expect.

Got enough clearance and you can run a 700-60 Big apple,
but that would be on a 29er type bike frame.
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Old 08-19-11, 04:33 PM   #3
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I like 700 X 28's.
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Old 08-19-11, 04:33 PM   #4
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if the pavement is that bad, then the widest tire you can fit on the bike is how I'd go. and a tire with kevlar liner, slime tubes, and a heavy duty wheel. I run 47s on my Trek hybrid, which is as wide as I can fit. My road bike I have 28s on but could get 32s, and would if the pavement was horrid.
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Old 08-19-11, 04:43 PM   #5
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Right.. My 'optimum' plan is 'get a frame with a freaking huge clearance', most likely an origin-8 CX700, and run a Big Apple. however, my utility bike is in the shop having its wheel relaced, the beater's hub has a major wobble and is likely to fail soon, the daughter is coming home tonight, the wife wants everyone to have bikes, and one of the options i'd researched and found viable was to pick up a Denali with her discount card - which has a frame clearance of 700x32 - for future conversion (new wheels, brakes, sturdier bar, etc etc) to a theft-area FG beater bike. It isn't clear how viable 700x32 tires are for the riding I tend to do.

Last edited by JusticeZero; 08-19-11 at 04:46 PM.
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Old 08-19-11, 05:52 PM   #6
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If it wasn't for your obvious lack of time to shop, I'd say just visit a couple of shops and try out something with 32's.
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Old 08-19-11, 07:55 PM   #7
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Currently I am using Conti Sport Contact on a couple of bikes. 26x1.6" and 700x37c. They are nearly identical in cross section and both are very fast and comfortable.
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Old 08-20-11, 01:13 AM   #8
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26" tyres are measured with Inches and 700's with mm. So a 26"x1 tyre would actually be equivalent to a 700x25.

For a Cyde- you should be thinking tyres wider than 25mm. But the limiting factor would be the Maximum width that can fit between the rear stays and the forks. Anything over 32mm would give comfort but not many frames will take that width. You say you are also looking at a frame to take wide tyres but do not necessarily go for the widest tyre.They will not be necessary. The wider the tyre- the lower the tyre pressure can be run to stop pinch flats. So if you were running 25's- you would probably have to run the tyres at around 100psi- wheras a 32 and you could probably get away with 90psi. Lower pressures will give comfort but can cause drag so you could have to find the compromise.
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