Greetings, I own a 2011 M56 and it's currently equipped with the 18" 73730 wheels, but I'm considering upgrading to the 20" 73731s. My main concern is tire wear-how long do tires on those 20's typically last??? Also, my previous car was a Mercedes CLK500 and the rear tires always wore out unevenly, toward the center of the car(maybe it was a camber issue) at roughly 12k miles. Will the rear tires on the 73731s also suffer the same fate??? Thanks for any insight.

I never had any issues with tire wear. Just be sure to get some decent rubber. The only thing to be aware of is that the 20x9's are fairly heavy so they may slightly affect your acceleration and stopping power.

Ok, thanks a lot. Do they'd last about 40k miles or so?

I've never kept a car longer than 25k miles and I like smoking tires so I'm the wrong person to ask. lol

Lol, yeah my tires don't last long either...