[Speedy1]

2009 BMW 335i x-drive sedan E90 (with sport pkg)
225/45/17 8" tires with style 161 rims
Continental ProContact SSR run flats

I am looking to replace the wheels and tires.

Does anyone know (for sure) what the offset and backspacing are on the BMW style 161 wheels? I think the offset is 34mm but I'm not positive.

I live in the WI northwoods with rough country roads. I am looking for advice on new wheels that are "sturdier" than the current OEM ones I have. 2 of my 4 rims are bent. Any replacement wheel advice?

I have been looking on Tire Rack but I am not sure of the offset and backspacing and also not sure how to determine "sturdiness".

Thank you in advance for any answers and advice!