2011 Infiniti M56: Heavy Foot, Dirty Bumper
June 30, 2011
I noticed this today as I was pulling in behind the M56. Looks like there's some carbon exhaust buildup on the bumper. I'd guess this has something to do with the way the car is driven.
...at wide open throttle.
And, yes, it's on both sides.
Josh Jacquot, Senior editor