What tyre pressure is best?

[Cooperpot]

Hi there, just had a puncture repaired and i was wondering what tyre pressure i should be using. I never carry a heavy load, and no more than 1 passenger. I think the manual says that it should be around 2.3-2.4 BAR for my situation. At the moment i think all my tyres are at a different pressure. I'm using 15'' 8-spokes by the way, with non-runflats.

Any suggestions?

[minigolf]

Haha, first suggestion is to run the same pressures on the same axle, at the very least.

I think tyre pressures are a personal thing, and it is surprising what a difference to handling air pressure can make. I usually run my tyres at around 38psi. That may be too high for some, but I don't mind it.

The best advice really, is experiment, find a setting you like and then check regularly (once/twice a fortnight) to ensure your pressures are being maintained. This should ensure better tyre life, even wear, and possibly even yield a small improvment in fuel economy.

[Root Ginger]

Quote: Originally Posted by minigolf

Haha, first suggestion is to run the same pressures on the same axle, at the very least.

I think tyre pressures are a personal thing, and it is surprising what a difference to handling air pressure can make. I usually run my tyres at around 38psi. That may be too high for some, but I don't mind it.

The best advice really, is experiment, find a setting you like and then check regularly (once/twice a fortnight) to ensure your pressures are being maintained. This should ensure better tyre life, even wear, and possibly even yield a small improvment in fuel economy.

Twice a fortnight? Is that similar to once a week?

[Jon Chalk]

Nah - it's closer to four times a month.

[Baker]

On my last track day when experimenting with different tyre pressures with the guys from Michelin Motorsport, found that best setup for me was 40psi at the front - 38 at the rear - these were on HOT tyres though.

[minigolf]

Quote: Originally Posted by Root Ginger

Twice a fortnight? Is that similar to once a week?

Summat like that.

[rinos69]

Quote: Originally Posted by Baker

On my last track day when experimenting with different tyre pressures with the guys from Michelin Motorsport, found that best setup for me was 40psi at the front - 38 at the rear - these were on HOT tyres though.

i would rather do the opposite, 38 at the front and 40 back.
Simply because our car tends to understeer (a lot) by itself... and as a general rule, if you put more pressure in the front than in the back you'll just increase this behaviour.

[Baker]

Quote: Originally Posted by rinos69

i would rather do the opposite, 38 at the front and 40 back.
Simply because our car tends to understeer (a lot) by itself... and as a general rule, if you put more pressure in the front than in the back you'll just increase this behaviour.

Ah, but I have a bigger rear sway bar so my car does not tend to understeer but can oversteer - shows how suspension setup can really affect the setup on the tyres you have to run.

[GTT 280]

I have moddified fully adjustable suspension (lowered) and spacers.

i run 33psi all round.

Too hi or too low

[St00ge]

i run 42psi on all four