2009/2010 tire size
https://www.topspeed.com/cars/merced...y-ar66564.html
Either the standard 295/40/R20
or
The optional 295/35/R21
And yes, tire size and tread pattern should be the same on all four tires on 4matic (AWD) vehicles.
Even if one tire has significant wear, this can damage the drivetrain and cause cruise control / ESP to have issues.
Last edited by Solo wing; Mar 2, 2021 at 04:18 PM.


