[BeemerDreamer]

I have a 2010 E92 with the M Sport wheels. Is it possible to increase tire width
to 255 front and 285 rear by having the wheels widened by 1 inch? What offset would I need so they fit and with X drive the big question is do the front and rear tire diameters have to be the same or is it ok if the front diameter is less than the rear?

[tobiroppo]

Were you able to increase your tire width and do your planned setup?

[BeemerDreamer]

Thanks for asking but I’ve not had any responses to my question.
I’ve found a local shop to have a look but so far no answers.

[BeatupVR4]

Front and rear tires don't need to be the same size.

255/285 is the same size.

It's what I run on my Xdrive E60

I'm at +38 front and +40 rear.