The lower control arm bushings can wear and crack, resulting excessive movement at the control arm pivot point, leading to irregular and premature tire wear. Worn Ball joints can also cause similar tire wear symptoms. I some cases it may be necessary to replace the lower control arm, including bushings & ball joint to correct this concern.
Premature Tire Wear Due to Cracked Lower Control Arm Bushings on Mercedes-Benz SL500
Average mileage: 55,763 (23,000–92,000)
22 people reported this problem
1998 Mercedes-Benz SL500 82,000 mi, Visitor
premature wear on inside of tires on both rear wheels and left front
8k miles on new rear Michelins with little serviceable tread remaining.
2006 Mercedes-Benz SL500 92,000 mi, Visitor
Broken control arm bushing, replaced control arms and ball joints, cost approx 1600.00.
2005 Mercedes-Benz SL500 28,000 mi, Visitor
Suspension work, bushings etc replaced
Can see tire wear in outside of front tires, know they were condition to last more, already found a good plAce here in watsonville , ca #easy tune up where they also replaced a alternator few days ago n a shift sensor pin on the shifter which is due to having the keyless ignition on option
Ok, this is my third problem for a "me too". I've not had this fixed yet.
2003 Mercedes-Benz SL500 45,000 mi, Visitor
no observed problem except tire wear - diagnosed at a service by distributor.