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25c tyres on a Giant TCR (2015 model)


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25c tyres on a Giant TCR (2015 model)

Have anybody maybe tried to fit a 25c tyres into a newer Giant TCR frame ?
Front wheel will work, but my concern is the rear clearance between tyre and seat tube.

A while back I tried to fit a 25c tyres on a “normal size (rim made for a 23c size tyre)– Ksyriums  and the inflated rear did not fit into the frame – the 25c tire did not inflate wider but, made the profile deeper  - as said the result was that the tire touched the inside of the seat tube.
So what I actually want to know:

  • Will a wider rim (22mm) with a 25c tyre fitted have the same effect?  (wider AND deeper?)  Or will it only  be wider, with the same profile than a 23c tyre on a 19mm rim? (like the Ksyriums above )

No luck with google and Unfortunately don’t know anybody (Bloemfontein) using 22mm rims with 25c tyres for a quick test on fitment. :blush:

 

Thanks for reading and any advice will be highly appreciated.

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I've been riding 25mm tires for the past few years.  Last year got a new Swift frame and had the same problem.  Funny 'though I can still ride 25mm Gatorskins but the GP4000s touch.  My son's Dedacci frame is the same.  A wider rim will flatten the tire - a customer of mine has no problem with his 25mm rims fitted with 25mm tires.  Looks like you are the one to test 22mm rims!

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25c tyres on a Giant TCR (2015 model)

Have anybody maybe tried to fit a 25c tyres into a newer Giant TCR frame ?

Front wheel will work, but my concern is the rear clearance between tyre and seat tube.

A while back I tried to fit a 25c tyres on a “normal size (rim made for a 23c size tyre)– Ksyriums  and the inflated rear did not fit into the frame – the 25c tire did not inflate wider but, made the profile deeper  - as said the result was that the tire touched the inside of the seat tube.

So what I actually want to know:

  • Will a wider rim (22mm) with a 25c tyre fitted have the same effect?  (wider AND deeper?)  Or will it only  be wider, with the same profile than a 23c tyre on a 19mm rim? (like the Ksyriums above )

No luck with google and Unfortunately don’t know anybody (Bloemfontein) using 22mm rims with 25c tyres for a quick test on fitment. :blush:

Thanks for reading and any advice will be highly appreciated.

Not too sure how much difference the 2012 TCR is to the 2015, but at one stage I had 25mm GP4000s on Ksyrium elites and they worked perfectly. Hope this helps even though Its not the 2015 as you asking about.

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Not too sure how much difference the 2012 TCR is to the 2015, but at one stage I had 25mm GP4000s on Ksyrium elites and they worked perfectly. Hope this helps even though Its not the 2015 as you asking about.

 

I have a 2013 TCR Adv frame and run 25mm Gatorskins on Ksyrium Elites and have no problem. 

post-615-0-02886400-1433176038_thumb.jpg

post-615-0-96057400-1433176054_thumb.jpg

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I have a 2013 TCR Adv frame and run 25mm Gatorskins on Ksyrium Elites and have no problem.

 

Hey. Thanks so much.

 

Is that 19mm or 22mm rims in your photo?

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Hey. Thanks so much.

 

Is that 19mm or 22mm rims in your photo?

I think the Ksyrium rims are about 20mm external and 15mm internal.

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  • 8 months later...

Also wanting to run a wide tyre on a wide rim....

 

From David's post I reckon I'll be fine.

 

Rims: 25mm external, 17.9mm internal (light bicycle 45mm U shaped).

Tyres: Spez Turbo Pro 26mm (preferably) or 24mm.

 

http://www.light-bicycle.com/light-bicycle/45mm-deep-carbon-700C-25mm-wide-road-rim-clincher-U-shape-tubeless-compatible-with-basalt-braking-surface/road-rim-clincher.jpg

 please give some feedback if it worked - thx

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 please give some feedback if it worked - thx

Will do. Might be a while though due to travels, but will definitely provide some pics.

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