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20 or 23(8 posts)

20 or 23BC
Mar 25, 2002 5:26 PM
Should I go with a 20 or 23 width tire? I am 5 feet 8" and weigh 148lbs. Which is faster and last longer?

Thanks
re: 20 or 23weiwentg
Mar 25, 2002 5:39 PM
23s last longer, and ride more comfortably.
as for which is faster, I have absolutely no idea. there are people who say that 20s have less rolling resistance, and there seem to be more who say that 23s have less rolling resistance.
here's the rule I made upRideLots
Mar 25, 2002 5:45 PM
Use 23's, unless you have a special reason to use something else. For example, if you are timetrialing and you weigh 120 pounds, or want to match your tire width to rim width, you might want narrower. If you are heavy, want extra comfort, or if speed is totally irrelevant to you, go wider.

Doug
here's the rule I made upweiwentg
Mar 25, 2002 7:33 PM
Doug,
what if I'm 120 pounds (I am) and am in a crit, and don't care about comfort? whaddya think?
btw, welcome back...
here's the rule I made upRideLots
Mar 26, 2002 6:36 AM
Thanks. Still 23, I'd say. I'd go for the larger footprint and grip of a 23 in a crit. I doubt you'd gain anything with a 20. If there were potholes or big cracks in the pavement, a 20 might be more likely to pinch flat.
castles in the skyWoof the dog
Mar 25, 2002 8:39 PM
20c is faster than a 23 because it is more aerodynamic, even if it has a slightly higher rolling resistance. For time trials it certainly makes a difference, and when things get technical, like twisty descends or crits, the key is to go with a little bit lower tire pressure (which is really a rule for both 20 and 23c's). I have done some turns that people said were scary to watch, all with a 20c rear tire. At your weight I would go with a 23c, but for time trials I would get 20c vredestein fortezza tires and pump 'em up to the max (160psi) = you'll be flying. I don't see any real difference between 20 and 23c, other than comfort, plus 20c is really faster. The wear really depends on the brand of the tire rather than its width at my weight.

Woof, the dog way up high.
castles in the skyharry hall
Mar 26, 2002 12:21 PM
23! Better cornering, comfort, and you're %$#@ing hallucinating if you can feel the weight difference. Anything skinnier is "700 x stupid" and I refuse to order them for my customers.
castles in the skyWoof the dog
Mar 26, 2002 1:14 PM
sometimes wider tires definitely weigh more than skinnier ones. Say, you are saving 20 grams per tire - that is 40 grams = the weight of 3 door keys. Take a wheel radius-long string, tie the keys, spin it around. Yes, not a lot, but the effect adds up. Following your logic maybe we all should ride balloon tires. There are reasons why you'd want a lighter wheel/tire combo in a race. Aerodynamics matter a lot more as well, that is why pro riders do time trials on narrower tires. As for comfort and cornering, it is all relative, I hope you realize that. Simply saying that something is stupid without really thinking just why this product is still out there and is widely used is whats stupid!

duh!

woof the dog.