Is this bad? 28mm tire tight squeeze

[charliedid]

OP

Have you been riding the 28's?

[weisan]

Do it!

[pobrien]

Is this the bike you plan to tour Japan on?
If so, and if you plan to ride on country roads, you might want more tire gap.

[jtbadge]

I would definitely not ride a carbon bike with that little clearance if you're riding anywhere but smoothly paved, dry roads.

[Peter P.]

Originally Posted by jtbadge

I would definitely not ride a carbon bike with that little clearance if you're riding anywhere but smoothly paved, dry roads.

Yet another reason to not ride carbon.

If you have to ask, then you're concerned. And if you have to put electrical tape at potential contact points, then you're doubly concerned. Get a smaller tire.

[glepore]

I wouldn't do that, fwiw. I get the comfort of 28's, but that's close. The reason I ran pave's on that bike was the comfort level and they were durable for Vittorias.

I had a buddy with a large Uno Air that he traded in for a 10 Air because he could flex it enough to get chainstay rub with 25's on 303's. I never had an issue with the small frame you now have, but I'd be cautious. Carbon doesn't like abrasion.

Those are also wideish rims on there-I know they're 25 external, and believe they're 18 internal.

[93KgBike]

You definitely do not want the tire to hit the stays on a carbon frame. If you are going to use tape, it needs to be teflon tape; gaffers tape is useless there.

[wallymann]

gaffer tape? teflon tape? no way, josé!

i recommend a couple layers of clear 3M mil-spec helicopter tape. granted no tape is perfect, but this stuff is designed to withstand abrasion/erosion well beyond any tape you'd encounter at your local hardware store.

Originally Posted by 93KgBike

You definitely do not want the tire to hit the stays on a carbon frame. If you are going to use tape, it needs to be teflon tape; gaffers tape is useless there.

[hobbanero]

+1 for dropping your tire pressure. Casing tension on 28s at 95psi is much higher than narrower tires at same pressure, so your comfort goes down and rolling resistance goes up.....lose lose.

Try 80psi....that is where I ride my 28s (measured, not claimed), and at 80kg, I don't pinch them. Many riders go even lower.

[Joxster]

A Conti 25c measures close to 27.6c

[zmalwo]

**************UPDATE*************
It rubs against the chainstay when i pedal out of saddle. the tape that was on there was gone in 10 min like he said. altho i'm not sure if it's because the low spoke tension on those chinese carbon wheels tho because my 25mm gp 4000s ii on my colnago has much tighter clearance but the zonda wheels are very rigid so I didn't have problem of tire rub.

[kaotic28]

I'm not surprised, as much as I'd like to run 28's on my Nago C50 I can (just barely) run 25's on it.

[zmalwo]

Originally Posted by charliedid

OP

Have you been riding the 28's?

First time actually, picked this bike up from Greg right before i left, fitted a 28mm conti 4000s ii and didnt have time for a ride. Now im in another country looking for a smaller tire
Should have listened.

[charliedid]

Not surprised at all.


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[philhan89]

go 25s. i have much more clearance and i have been stopped rather abruptly with a stick between tire and fork in the front before. in my opinion its a risk not worth taking.