Wheels spacers needed?

[Cswihart]

I drive an 08 e92 and recently picked up a set of 436M wheels off an M235i. Do I need wheels spacers to fit these properly and if so what size? Wheel specs below:

Current wheels:
Front Wheels: 8Jx18 ET34
Rear Wheels: 8.5Jx18 ET37
New wheels:
Front Wheels: 7.5Jx18 ET45
Rear Wheels: 8Jx18 ET52

 

[Cheezy]

Rimsntires.com

 

[tan_rich]

Measure and calculate with willtheyfit.com

 

[ASquared]

I would guess around 20mm but honestly that’s not a very good fitment to begin with. When you go narrower on a wheel width, ideally you would have to be at a lower offset on it to be where the initial wheel was. In your case, these new wheels are more narrow and have a higher offset which is gonna require larger wheel spacers to compensate.