shaunf1703

Hi,

I've got a 04 530Diesel Auto E60 with non standard wheels.

My tyres sizes are 245/40/18 front and 275/35/18 rear...How do i know what pressure to have as the manual doesn't have these sizes.

Thanks!
Shaun

edit

at the moment im running 32psi front and 38psi rear but i dont think its enough for these huge rears.

greycoopers

Damz...275 on an 18" wheel...that huge

I have 20" with 275 on the rears and I keep them at 2.5 bar (no idea how much psi that would be)

SilberGrauE60

these are actually the tire sizes fitted to the staggered 124 wheels (8x18 front/9x18 rear) common to the sport pkg. recommended tire pressures are:

Front - 32-38 psi
Rear - 35-42 psi

this may be based on the run-flat dunlop tires with a max cold press of 51 psi.

inktoxicated

im running my 20s at 38psi all around. just had to recalibrate the idrive for the flat tire warning to go away

Diamond

Seriously??? every time I come on here there is a comment that just blows my mind-like this person really can operate a computer
and use the internet, let alone manage to drive an e60!

Tire width has nothing to do with wheel sizing in diamter. A 23 inch wheel and an 18 inch wheel can both ahve the same width-and the 275 refers to the width and has nothing to do with the height of a wheel/tire! shocking

With that said I I think 36 front and 40rear works weell and I have those sizing on 19s however height and sidewall height does effect pressure so I am curiosu what the 550sport with non runflats reecomend

tooltec

1 bar = 14.5 psi, therefore 2.5 bar = 36.25 psi (36 psi on a gauge).