wheel fitment
 

I got tired of my old style 166 replica on my 530xi, decide to try something new. Either Avant Grade or VMR. I like the look of Avant Grade M310 or VMR V710, personally, I'll choose Avant Grade cus the canter cap looks nicer.keep in mind I'm running stragged. 245/35/19 front, 275/30/19 rear. Found out ECS Tuning list the offsets of M310 are 19x8.5 5x120 ET35 72.6CB / 19x9.5 5x120 ET22 72.6CB, but plenty other sellers on ebay list the fitment is 35front and 33 rear. I'm confused, which one is correct? Can some one with M310 on their xi can prove it?

Since you have an xi, I believe you cannot use any offset below ~30 without modding stuff, so the 33 is correct, I have 18x10 with a 33 in the rear - Forgestar recommended that offset as the most aggressive without running into issues.

Check out modbargains - they have a dropdown of offsets and I want to say the 22 are for the non-xi. they also list the CB at 72.56 which is more accurate.

If you contact modbargains hit up Alan - Avant Garde M310 Wheels Matte Black 18"/19"/20"/22" for BMW 5x120mm