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Discussion Starter · #1 ·
I have a 1997 328i coupe with the m3 motorsport alloys with 225/45/17 tyres what should the pressure be full laden 2 adults and 2 teenagers and a boot full.
Thank you in advance
 

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Check the door jamb on the driver's side. It should show tire pressure there.
Might not be for those exact tires, but it'll give you something to go off of.
 

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Discussion Starter · #3 ·
these wheels have been put on after market, the handbog with the car only goes up to 16" wheels for a 328i
 

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Damn. Sorry bro! I'm sure someone else on the site has teh answer for ya.
 

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oops, i misread that, my eyes saw 245 instead of 225. :goodness:
but it should still be pretty close to that.

with non-stock 225 to 245 wheels, some peeps on the m3 forum have gone +/- 1 or 2 psi. if you're fully laden, i'd go on the + side.
 

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k, i looked at door jamb (these numbers are for 235 tire)

with "3 adults" it is this:
front = 33, rear = 36

@ full capacity it is this:
front = 36, rear = 42

it appears there is quite a bit of latitude in the psi (F 33-36, R 36-42), so any number in between (closer to the upper end of the spectrum) should suffice, since you'll have 4 adults plus cargo.
 
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