Thread: Bike Size
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Old 02-17-08, 01:59 PM
Join Date: Feb 2008
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Bike Size

I am looking to replace a 15 year old 20" Trek 700 with a Trek 7200 or 7300. I'm in my 50's and 5'10-1/2" or 5'11" with a 32" inseam. The salesman said a 17.5" would be a good fit (perhaps because that's the only size they had in stock). I almost touch the top tube on the 20" when standing over it and have a couple of inches of space from the top tube on the 17.5". I don't know if the 17.5 or 20" is more comfortable, as the shop doesn't have a 20" in stock. Is there a set formula for determining the proper size?
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