Hi! I recently bought a pre owned z4 e89 20i sDrive and I’ve been having a lot of trouble with the wheels and tires.
First of all, the factory fit wheels (17 inch) were removed and were replaced by after market 18 inches by a previous owner. Now the tyre sizes are 225/40 R18 for the front and 265/35 R18 for the rear.
I got the tire pressure signal just a few days after I bought it and had to replace the tires, which again kept loosing air, then got the rims checked and fixed.
I am not losing air now but the tyre pressure warning keeps coming on. Is this something related to the tyre pressure really? Because I pump 36psi to the front and 42psi to the rear. Should I change that? According to the tire sizes I have on now, what tyre pressure should I pump in?
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