Bicycle Mechanics - Road bike tire sizing and diameter
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03-06-07, 02:47 PM
My road bike currently has 700x23 tires (some flavor of Conti Gatorskins). They're getting a bit old and I want to replace them before I start doing some longer rides this year (MS150, maybe Seagull Century, etc). I'd like to go up a size or two, but the clearance between the rear tire and brake bridge is small, 1/8", maybe less. Would I be able to move up to a 25 or 28 size tire? How much to road bike tires grow in diameter as they get wider? I have plenty of space for extra width.
Also, what's a good general purpose tire for fast recreational riding and general noodling around? I would like something on the tough side since I'm not used to road bikes and don't avoid obstacles as well as I should (pothole, what pothole? :eek: ).
03-06-07, 03:11 PM
25 will work for sure. Go with one of the carbon lined tires (Hutchinson or Michelin is great). Real tough is Specialized Armadillo, though the ride is a bit harsher.
03-06-07, 04:00 PM
$20 USD will get you a rubino. Kevlar lined. Nothing fancy, durable tire.
03-06-07, 04:08 PM
My Bontrager Xlite race 700X28 foldable measure 26 mm wide, so they will probably fit. They roll easily and hold the road well. They are kevlar belted.
03-06-07, 07:49 PM
I recently got some 700x25 Serfas Seca's. Very nice ride, and dual compound tread. Best of all they won't break your wallet. I think I paid somewhere between $15-$20 a piece.,,,,,BD
I've got a stupid question. hopefully I can just get it answered in here rather than starting a new thread. I've been into mtb for years but I'm totally new to road bikes. I have the same 700x25 tires on my trek and I want to get a couple of spare tubes but all the tubes I look at say 700x20/28 like this one:
does that mean it will fit anything between a 20 and 28?
03-07-07, 05:45 AM
I have the same 700x25 tires on my trek and I want to get a couple of spare tubes but all the tubes I look at say 700x20/28. Does that mean it will fit anything between a 20 and 28?
03-07-07, 05:46 AM
Sounds like it. 20 to 28 is not too big of a stretch, no pun intended.,,,,BD
Think about it this way, a 1 1/4" 27 inch tire is a 32....
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