chimney soot

[hemimania]

every time i wipe my car down i notice from the trunk down theres this black soot, at first i thought it was brake dust, but theres just to much of it. i can ride around the block with very little braking. when i get home the back end is covered with this s--t. could it be carbon? even without getting on the gas? this stuff finds its way in every nook and cranny. anyone else with this problem?

[bruno]

That does seem excessive from just a short drive around the block. If your 300 is heavily waxed, I believe dirt/dust will easily stick to it. I use to have the same issue (not as heavily as you described) but it immediately diminished after adding the SRT-8 type spoiler. My trunk and lower rear fascia now have very little black dust. It makes me think it has something to do with the aerodynamics of air flow.
bruno

[hemimania]

i have the rear window spoiler and the trunk spoiler. if i use a dry towel to wipe it off, it just smudges. i have to use a cleaner.

[OoTLink]

Yikes o_O My 300c's rear end gets dirtier than the rest of the car very easily, but it aint soot. It just has to do with aerodynamics...

I wonder if your hemi is burning oil or something.

[hemimania]

no it doesnt burn oil, ive had people follow me, to see if they could see anything. nothing. took it to my dealer, the service guy thought maybe it was a stuck brake caiber. it was'nt. and its not running rich. he mentioned tires[soft compound] im running hankook ventus st 275/40r20 106w anyone running these tires?