UNDER PRESSURE
UNDER PRESSURE
Author
Discussion

superwedge

Original Poster:

1,286 posts

178 months

Monday 29th October 2012
quotequote all
does any one know,what the tyre pressures are on a 350i,front and back,scratchchin

maston

872 posts

182 months

Tuesday 30th October 2012
quotequote all
This is a real bone of contention...........
Some say 25 all round, 27 at the back 25 at the front etc. etc..........

What works for my 390 is 27 psi all round.
To be honest unless you are going round a track there is very little difference between 25 and 27 etc.....
I tried 30 psi all round once, the traction was definitely not good and the ride was way too hard.

What size wheels have you got ?

superwedge

Original Poster:

1,286 posts

178 months

Tuesday 30th October 2012
quotequote all
15ins all round,

chj

785 posts

243 months

Tuesday 30th October 2012
quotequote all
22psi front 24 rear, iirc, but to some extent will depend on springs and dampers. I prefer mine slightly lower.

Danny Hoffman

1,617 posts

292 months

Tuesday 30th October 2012
quotequote all
My 350i handbook says 22 front 24 back with 205/60/15 tyres

Convert

3,757 posts

248 months

Tuesday 30th October 2012
quotequote all
22 front and 24 back. with 205 60/15's

V8 GRF

7,299 posts

240 months

Tuesday 30th October 2012
quotequote all
It also depends on what tyres you're using. The older types had much stiffer sidewalls and so could run less pressure as modern performancer tyres have softer sidewalls you tend to need to run slightly higer pressures.

Have a play but it's amazing the difference a few pounds makes.

NaCl

286 posts

208 months

Tuesday 30th October 2012
quotequote all
24 all round is great on mine for road use.
I tried as low as 20 - too vague and steering was stiffer
I tried as high as 28 - too skitty / bumpy