Tyre size adaptability
#1
Junior Member
Thread Starter
Join Date: Feb 2020
Location: Paris, France
Posts: 15
Bikes: Look KG 251, Genesis CDF 20, Trek FX 3
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Likes: 0
Liked 2 Times
in
2 Posts
Tyre size adaptability
Hi everyone,
Standard question here. I have a TREK FX 3 with the original Bontrager 700x32 tyres that are coming to the end of their life. I've often found that on some dirt tracks I lack stability and would therefore like to try out a larger tyre size. I know I can fit a 700x35 but would possibly like to try a 700x38. Does anybody know if they'll fit?
Thanks
Standard question here. I have a TREK FX 3 with the original Bontrager 700x32 tyres that are coming to the end of their life. I've often found that on some dirt tracks I lack stability and would therefore like to try out a larger tyre size. I know I can fit a 700x35 but would possibly like to try a 700x38. Does anybody know if they'll fit?
Thanks
#2
Senior Member
Join Date: Sep 2010
Location: Roswell, GA
Posts: 8,319
Bikes: '93 Trek 750, '92 Schwinn Crisscross, '93 Mongoose Alta
Mentioned: 30 Post(s)
Tagged: 0 Thread(s)
Quoted: 1438 Post(s)
Liked 1,092 Times
in
723 Posts
How much clearance do you have with your 700x32s? Be aware that tires do not always run true to size and that different brands/models of the same nominal size may have different actual sizes.
#3
Senior Member
Join Date: Dec 2010
Location: northern Deep South
Posts: 8,895
Bikes: Fuji Touring, Novara Randonee
Mentioned: 36 Post(s)
Tagged: 0 Thread(s)
Quoted: 2599 Post(s)
Liked 1,924 Times
in
1,208 Posts
I'd be tempted to darken the door of a bike shop and see if they've got wheels with the tire size you want to try that you can borrow. (If it fits, buy at least one from them!)
#4
Really Old Senior Member
Maybe a slightly more aggressive trad on 32's?
It'll probably be slightly larger than a "smooth" 32.
It'll probably be slightly larger than a "smooth" 32.
#5
It's MY mountain
Join Date: Sep 2006
Location: Mt.Diablo
Posts: 10,001
Bikes: Klein, Merckx, Trek
Mentioned: 70 Post(s)
Tagged: 0 Thread(s)
Quoted: 4336 Post(s)
Liked 2,977 Times
in
1,614 Posts
Dave 76 can examine all the normal places where clearance presents a problem - under the brakes, between the stays, etc., but even veteran bike guys (me!) still call it wrong sometimes. What looks like an extra 3mm with the old tires in there turns out to be somewhat less when the new ones that are 2mm bigger get mounted.
Go see the guys at the Trek store - they would probably like to help you.