Mine does that too. It's the tire rubbing on the fender.

Karl

*** It's all about consistency! *** *** Previously 88SVT *** 06 F150 Supercrew 5.4L FX4 98 SVT Contour #4362 Born 1/6/1998 86 Ranger GT (For Sale) 69 Fiat 850 Sport Spider (For Sale) 67 Formula-S Barracuda