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Now that I've got my new wheels, I need to confirm the tyre pressures I should use. The fitter set them at 32 all round.

Does anyone know what pressures I should set? Is there an 'official' figure?

I've got 235/40/17's on standard wheels and I run 38 all round.

I tried 34 and they just felt loose - too much give in the sidewalls I guess. 40 is too bouncy.

You will notice a harder ride I expect because of the lower profile, I did. It always amazes me when I swap to 45 tyres (track wheels) just how much of a difference there is.

Thanks David. Although I've not had much time to judge, I haven't noticed the ride being much harder at all.

However the car does feel a little bit 'loose' when cornering hard, so maybe I should use a higher pressure and that will make the ride harder.

Does anyone else have a comment?

Dippy, here's a selection of answers when I asked the same question last year ...
http://www.rs246.com/index.php?name=PNp ... highlight=

I currently run 36 on the front and 34 on the rear - I tried 38 all round, but my teeth didn't like it on all but the smoothest of roads.

Nige.

Thanks Nige.

Thanks Nige.

Lowering the rears way down to about 25 does make for some pretty exciting oversteer action. Not for the public roads though.

Correct me if i'm wrong. I thot the rear needs to run higher pressure to increase oversteer??

eric_mok wrote:Correct me if i'm wrong. I thot the rear needs to run higher pressure to increase oversteer??

You may well be right, but I have experience of it the other way around too.