How do you calculate the correct tyre pressures for different size wheel + tyres

[tshirt2k]

try 35 front 32 rear. If its too harsh, reduce it a bit.

[bob23]

try 35 front 32 rear. If its too harsh, reduce it a bit.

cheers. they are all about 20psi at the moment which is how I picked the car up, I'll give that a try.

[Wayne]

try 35 front 32 rear. If its too harsh, reduce it a bit.

cheers. they are all about 20psi at the moment which is how I picked the car up, I'll give that a try.

When I had 17"s on my mk3 I ran 32 all round

[bob23]

try 35 front 32 rear. If its too harsh, reduce it a bit.

cheers. they are all about 20psi at the moment which is how I picked the car up, I'll give that a try.

When I had 17"s on my mk3 I ran 32 all round

ok cheers, did yours hit the arches when you went over bumps?

[Wayne]

try 35 front 32 rear. If its too harsh, reduce it a bit.

cheers. they are all about 20psi at the moment which is how I picked the car up, I'll give that a try.

When I had 17"s on my mk3 I ran 32 all round

ok cheers, did yours hit the arches when you went over bumps?

Yes all the time on the rear, fixed it with trimming the arches back with a grinder.

[bob23]

try 35 front 32 rear. If its too harsh, reduce it a bit.

cheers. they are all about 20psi at the moment which is how I picked the car up, I'll give that a try.

When I had 17"s on my mk3 I ran 32 all round

ok cheers, did yours hit the arches when you went over bumps?

Yes all the time on the rear, fixed it with trimming the arches back with a grinder.

I don't fancy trying that myself, can I limit the amount of suspension travel instead?

[Wayne]

try 35 front 32 rear. If its too harsh, reduce it a bit.

cheers. they are all about 20psi at the moment which is how I picked the car up, I'll give that a try.

When I had 17"s on my mk3 I ran 32 all round

ok cheers, did yours hit the arches when you went over bumps?

Yes all the time on the rear, fixed it with trimming the arches back with a grinder.

I don't fancy trying that myself, can I limit the amount of suspension travel instead?

Well I had coilovers, not much else you can do, are you running 205/40's

[bob23]

try 35 front 32 rear. If its too harsh, reduce it a bit.

cheers. they are all about 20psi at the moment which is how I picked the car up, I'll give that a try.

When I had 17"s on my mk3 I ran 32 all round

ok cheers, did yours hit the arches when you went over bumps?

Yes all the time on the rear, fixed it with trimming the arches back with a grinder.

I don't fancy trying that myself, can I limit the amount of suspension travel instead?

Well I had coilovers, not much else you can do, are you running 205/40's

yeah 205/40's, bloke I bought it off said it's on a fully adjustable spax coilover kit although I don't think it is adjustable, was supposed to have a lot of stuff that it hasn't. 

[Wayne]

yeah 205/40's, bloke I bought it off said it's on a fully adjustable spax coilover kit although I don't think it is adjustable, was supposed to have a lot of stuff that it hasn't. 

Might be worth checking the offset of the wheels, you need et35 or 30.

[tshirt2k]

Get the rear arches rolled