The black Octy we picked up from Woking (thanks again Tony) has had a set of 18" VW wheels added at some time in its past. It has 225/40 18 ZR tyres and I'd like to know what are the correct pressures if anyone can help?

 

With 17" wheels on my Scout it's 2.2/2/1 for normal running.

 

Is there a white tyre pressure label inside the fuel filler flap?

 

You need about 0.2Bar (3psi) more than you would use for 195/65R15, 205/55R16, 225/45R17 size tyres.

 

If you need to use more than 3Bar (44psi) make sure the tyres are XL eXtra Load.

 

Edited 29 August, 20223 yr by Carlston

45 minutes ago, Carlston said:

Is there a white tyre pressure label inside the fuel filler flap?

 

You need about 0.2Bar (3psi) more than you would use for 195/65R15, 205/55R16, 225/45R17 size tyres.

 

If you need to use more than 3Bar (44psi) make sure the tyres are XL eXtra Load.

 

I don't believe 18s were a standard fit on the normal Octys (i.e. not the VRS) and the filler cap flap guide on this (and our others) only goes up to 17s.  These wheels are VW (according to the hub centre cap) and whilst I tried some intensive Googling[tm] I couldn't find a definitive answer.  I'll take a piccy of one of the wheels and upload it to the wheels forum to see if anyone can identify it.

 

Standard running pressures for the smaller wheels are 2.2 bar front, 2.1 rear so it looks like I should raise these slightly as you suggest to 2.4 and 2.3.

 

Were the car mine I would keep an eye on tyre wear and tune the pressures accordingly but it's going to the daughter & SIL who aren't as organised as I am

 

Many thanks for the advice. I'll add myself to a long list of Briskys who have been grateful for your help.

 

Have 2.5 bar pressure in my vRS

Edited 29 August, 20223 yr by Joey83