[rob39]

Just wondering if having a 28mm tyre on the rear and 25mm on the front has any negative or positive impact on the performance, apart probably a comfort factor 

Got a set of 28mm given to me they will fit on the rear but no chance on the front 

Topic

[IanMSpencer]

Continental used to sell odd
Continental used to sell odd pairs like that – one 23 and one 25.

The theory is that the front has less weight and less work to do (as a guide, my front tyres last about twice the time of the rear), also that the narrower front tyre is more aero whereas the rear is protected by the frame anyway. From experience, there is a sweet spot, which may well vary by rider (weight of rider being one factor, weight of tyres being another) – I’ve got 32s on my winter bike – is what the bike came with and they are just a bit too heavy but I prefer riding them to the 25s on my other bike.

So as we are tending towards wider tyres (I’ve bought 28s for my next tyre change) if you can’t fit 28s on the front, 28 rear 25 front is an entirely sensible thing to do.

I’m working towards 28s on my summer bike and 30s on my winter bike (gravel with mudguards) but I’m going to wear out what I have as I doubt the difference will be massive.

All tubeless.

[Author]

Replies