I’ve got a trek roscoe 8 for my son, but I would like to put some skinnier tyres on it. It’s currently got 2.8 on the bonty line 40 rims. Does anyone know what’s the skinniest tyre I can go to on those rims? Cheers
Why skinnier? I’d be wary of going below 2.5, but depends why the change, would a different tread pattern help?
What do you have now?
Careful on the lightness - I recently stuck a rekon 2.6” exo on my hardtail and I think it’s made of tissue paper. Never holed a tubeless tyre - but holed this one on the second ride even with a rimpact in just in the local woods! Going to replace the anchovy (that worked) with a mushroom patch and have a go at selling it on eBay.
On a 40mm internal rim (assuming that’s what you have) if you go too narrow you’re going to end up with a very square tyre and the side knobs hitting the ground whilst going straight - which will give more drag rather than less.
I’d say a 2.6” Schwalbe (rock razor in my case) and 2.6” Specialized are both really 2.4” tyres so I’d give those a swerve. The old style Forekaster 2.6” blows up nice and rounded / cushioned but rolls quite fast - yet surprisingly also works in mud. So I’d recommend one of those if you have 27.5” wheels. Even though they’re also exo they seem to have a thicker casing than the rekon for some reason (and they seem to have a bigger volume)
Bontrager tyres seem to be light for their size and I've never had any issue with longevity - the XR4 and 5 I'm running are certainly as good as the Maxxis tyres they replaced and are a fair bit lighter - I think the 2.4 XR4 is @750gms so the 2.5 won't be a lot more