I’m looking at getting either of these bikes and want to run 32mm GP5000S TRs on a 25mm internal rim, so will probably blow up to 34/35mm. Anyone know if these frames would fit them? Thanks

Sl7 lists 32 as max and the giant at 33mm. However you can probably fit 34/35 just fine on both you will just be getting close to 2ish mm of clearance on either side rather than ~4.

Yeah, I can’t find if those stated clearances are measured tyre width or stated tyre widths with extra room

I’ve got two sets of GP5000 (AS and S TR) 32mm tires on 25mm internal rims, and they all measure right at 33.8mm-34mm wide. They clear just fine on my Aethos, SL7 and SL8 with 4mm all around… A 35mm stated tire, that measured more like 36mm or 37mm would not fit with any wiggle room to spare.

The TCR will definitely fit it. and I’ve got a frameset for sale if you want it :sweat_smile:

Have you by chance tried the 25mm internal width rims with 30mm tires? I’m considering a wheel set with the same internal width rims, but not sure if this combo would work with my 2021 TCR with 32mm tire clearance.

I currently have a set of Gp5000 S TR 30mm tires on 25mm internal hooked rims on my SL8, they measure out to a full 31.9mm at 50psi. I know Giant updated the TCR at some point in 2020 or 2021. I had a 2020, with external brake hose routing on the fork, and there would be no way this setup would fit…

Thanks for this. That’s right on the edge–a bit of a risk, but one I’m not unwilling to take.

Giant TCR 2025 and Tarmac SL7 tyre clearance

Equipment

fljones3 February 5, 2025, 2:06am 8

I run 32 Turbo Cottons on my SL7. No issues.

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Giant TCR 2025 and Tarmac SL7 tyre clearance

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