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 Post subject: Caad 10 and Wide Rims
PostPosted: Sun Nov 26, 2017 11:48 pm 
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Joined: Sat Sep 04, 2010 4:43 am
Posts: 4
I know this question gets asked a lot but can't find anything precise through search. I have a 2012 Caad 10 with Ultegra and want to know if the bike can handle newer, wider Mavic rims (2017). I know that the bike will handle 25c tires on older rims just fine, and I would assume the tire will have more than enough top clearance with a wider rim. I am just curious if there will be an issue side-to-side.


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 Post subject: Caad 10 and Wide Rims
Posted: Sun Nov 26, 2017 11:48 pm 


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PostPosted: Tue Nov 28, 2017 5:44 am 
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Joined: Sun Dec 08, 2013 10:30 pm
Posts: 33
Will be fine. I run 25mm GP4000s on Flo rims without issue. Would probably be able to fit 28mm but my brakes are the limiter.


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PostPosted: Tue Nov 28, 2017 4:00 pm 
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Joined: Tue May 23, 2006 4:33 am
Posts: 1096
For width, you have to worry more about the clearance at the bottom bracket with CAAD 10's of that vintage. An extra 3-4 mm width isn't a problem, getting you to a somewhat wider rim like a HED Belgium. But if you're talking about significantly oversized rims borrowed from mountain or intended for very large tires, you may have a problem. And the wider rim will allow the tire to be wider too; if you are running a regular road-sized tire (say, up to 28 mm), you shouldn't have a problem. If you're trying to run something like a Panaracer Gravel King or Challenge Eroica, you may run into problems.


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PostPosted: Tue Nov 28, 2017 10:19 pm 
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Joined: Mon Feb 19, 2007 3:44 am
Posts: 2275
Location: Canada
I ran 25mm Continental Comps on my daughter's CAAD10, without any problems, on 27mm wide ( 25mm at the brake track) rims. I had to change the rear Sram Force (2012) caliper though, it was really too close to the tire.

Louis :)


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PostPosted: Tue Nov 28, 2017 11:19 pm 
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Joined: Mon Oct 02, 2017 2:48 pm
Posts: 5
I'm running 25c Ones on 17c internal width rims on a 2010 CAAD10. I cannot see how going to a 19c rim would be a problem. I plan to do the same myself. 28c tires could be a stretch, though.

Sent from my LIFETAB_P970X using Tapatalk


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PostPosted: Thu Dec 14, 2017 12:01 am 
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Joined: Thu Apr 11, 2013 2:15 am
Posts: 235
Using 25mm Pro Ones on Pacenti SL23 and Kinlin XR22T rims (18 and 19mm internal, respectively) in my CAAD and I've had no clearance issues. It is at it's tightest around the BB as stated, with caliper clearance being more a factor than fork/stay clearance elsewhere


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PostPosted: Thu Dec 14, 2017 12:46 am 
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in the industry

Joined: Fri Apr 29, 2011 8:32 pm
Posts: 193
I've measured a handful of tires on various rims. Based on that, I use a rule of thumb: the tire gets wider and taller by half the rim's increase, with a tolerance of +/- about half the rim's increase.

Example: A 23C tire might measure 24.5 on a 17 mm rim (made up numbers).
Same tire on a 19 mm rim gets 1 mm wider, 1 mm taller, +/- 1 mm.
Same tire on a 21 mm rim gets 2 mm wider, 2 mm taller, +/- 2 mm.

The tolerance is probably not due to geometric effects, but due to normal variation in tire dimensions and the humans taking the measurements. ;-)

_________________
Damon Rinard
Engineering Manager, Road Bikes
Cycling Sports Group, Cannondale
Ex-Kestrel, ex-Velomax, ex-Trek, ex-Cervelo


Last edited by DamonRinard on Thu Dec 14, 2017 12:57 am, edited 1 time in total.

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Posted: Thu Dec 14, 2017 12:46 am 


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PostPosted: Thu Dec 14, 2017 12:54 am 
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in the industry

Joined: Fri Apr 29, 2011 8:32 pm
Posts: 193
By the way, for road bikes, ISO requires at least 4 mm clearance between a tire and any frame member. Accounting for normal manufacturing tolerance (frame alignment, wheel hop & wobble, tire tolerance, paint, etc.), the design must have a few millimeters more clearance than ISO.

But ISO applies only when the dealer sells a bike; after you own it, you can change to any tire you like.

For me, if my wheel and tire run true, I'm personally comfortable with 2 mm clearance or more, assuming no mud (clean dry roads or clean wet roads).

_________________
Damon Rinard
Engineering Manager, Road Bikes
Cycling Sports Group, Cannondale
Ex-Kestrel, ex-Velomax, ex-Trek, ex-Cervelo


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