I cannot find an accurate recommended tyre pressure for these as it appears they are off a 328 (hence the difference in weight possibly affecting the recommended pressure shown on various websites).
Does anyone know what they should be (rear tyres) as they were upgraded to the 18's by BMW before I got it. The rear end slides about all over and I'm convinced they must be over-inflated. The handling on these is supposed to be good and mine isn't that great.

Many Thanks