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Model specific boards => Golf mk4 => Topic started by: Paul81 on 29 January 2012, 21:20

Title: Tyre pressure for 225/40/18?
Post by: Paul81 on 29 January 2012, 21:20

As the title says guys.
Can anyone help?

Title: Re: Tyre pressure for 225/40/18?
Post by: richw911 on 29 January 2012, 21:23

http://www.golfgtiforum.co.uk/index.php?topic=120941.0

Title: Re: Tyre pressure for 225/40/18?
Post by: Steve_PD on 29 January 2012, 21:23

I run 32psi all round

Title: Re: Tyre pressure for 225/40/18?
Post by: mcgee9t2 on 29 January 2012, 21:24

is it not written on the tyre?

Title: Re: Tyre pressure for 225/40/18?
Post by: Wayne on 29 January 2012, 21:40

Standard pressures is all I have ever used.

Title: Re: Tyre pressure for 225/40/18?
Post by: stevelfc on 29 January 2012, 22:10

32 front
30 rear

Title: Re: Tyre pressure for 225/40/18?
Post by: tshirt2k on 29 January 2012, 22:14

As the profile goes lower you should increase the pressure. So it should be higher than standard big sidewall tyres.

Title: Re: Tyre pressure for 225/40/18?
Post by: james2 on 30 January 2012, 00:06

Quote from: tshirt2k on 29 January 2012, 22:14

As the profile goes lower you should increase the pressure. So it should be higher than standard big sidewall tyres.

31 psi is fine all round ,back can be a bit less(29).Tractor tyres are the same. It take 100psi to pop some beads in on cars tyres. Brother works at tyre centre. :wink: more wieght you take add more psi  :wink:

Title: Re: Tyre pressure for 225/40/18?
Post by: tshirt2k on 30 January 2012, 10:22

It doesn't matter who works in a tyre place, most put a average pressure in. It's to do with loadings and weight on the tyre.

Why would a 205/50 on a mk3 be 32 front 29 rear. And a 195/50 is 38 front 35 rear?

Obviously these are higher if vehicle is loaded.

And that info is from the petrol flap of a 16v. Cars with different weights would be different.

I'd suggest looking at manufacture recommended pressures and adjust according to the tyre.

Title: Re: Tyre pressure for 225/40/18?
Post by: tshirt2k on 30 January 2012, 12:47

Quote from: wolverine1091 on 30 January 2012, 10:38

i run 34 front 36 rear

I would have thought it should be the other way round. Unless you have alot of weight in the back.

Pressures should be set to the load rating requirement of the tyre.

http://www.tirerack.com/tires/tiretech/techpage.jsp?techid=194 (http://www.tirerack.com/tires/tiretech/techpage.jsp?techid=194)