Mercedes-Benz Forum banner
1 - 8 of 8 Posts

·
Registered
Joined
·
9 Posts
Discussion Starter · #1 · (Edited)
My car pulls to the right, I mean real strong pull, not a slow drift. Even at low speeds when I let go of the wheel, the car will pull to the right. It is not only unsafe (I have ding on the right fender caused by a rolling pull when looking for directions ), but a major annoyance. I have to hold the wheel slightly turned to the left to get the car straight. Below is some symptoms and diagonsis of the pull.

1) I don't think the pull is due to the bent rims, bent rims should show up during tire balance, right? My tires were balanced recently.

2) My new set of Bridgestone, Potnezas started wearing out on the outer edges. The rear right wearing out on the outside than the front right on the outside - the rear right outside wear is very pronounced. Below is the picture taken after a recent tire rotation. [I will attach the picture later, I'm having trouble with finding the cable for the camera]

3) This the second set that is wearing out similarly, my previous set was Pirelli P6000. When I had Pirelliset on the car, the dealer and independent shop where I live, kept telling me it was the bad tire causing the pull not the suspension. The dealer did the alignment twice on this set, nothing obvious jumped out.

4) On the current Bridgestone, Potneza set, which was installed by Wheel Works, the car started pulling to the right after this set was installed. The alignment was done during the install. I took it back the alignment was checked and it was in spec., this did not still solve the problem. I got cyncical of the Wheel Works alignment and took the car to MB dealer ship, and the alignment was in spec. Now after 3 alignments nothing at changed.

5) Just before the Pirelli's were installed the independant shop noticed the steering shock had worn out (the car 40K miles then) and replaced it.

6) I have been noticing tire wear on the right side slowly wearing out the outer edge. I was shocked to see the tire wear after a recent tire rotation, the Potenza's have only 14K miles on them.

7) When stopped on a uneven surface the car wheel will be turned to the right.

8) The dealer ship and the independant shop checked the suspension (yeah, I paid them both and they told the suspension was clean.

Given all these symptoms, I'm tending to think it's supension problem not a tire problem. Given the many components part of the suspension, I'm suspecting the shocks, springs, ball joints, front rear control arm bushings or subframe. I don't want to replace all, my philosphy has been don't replace if it ain't broke. As you can tell, I'm very keen on identifying the problem and getting this fixed than sell the car. Even if I sell the car, I don't want to pass the problem to another owner. Otherwise I love this car.

I'm told the front rear control arm bushings wear out on this model, I'm thinking of replacing the them. I found a Polyurthane bushing <www.lpdauto.com>

The car is '99 C230K sedan, sport supension, all stock, has 70K miles on the odo. Never been in an accident, never abused. I bought this one used, at 24K. I checked the carfax report, I did not see any accident report on the car.

I'm seeking the wisdom of the list to shed some light on this problem.
 

·
Registered
2004 Lexus LS 430 Modern Luxury. 2012 Acura TSX (fun fun) Maybe MB again one day...
Joined
·
2,604 Posts
Switch the two front tires and see if it pulls to the left.

If it does then rotate that tire to the back or replace.

That is the first, and cheapest check you could do before getting into suspension parts.
 

·
W201, W202, W203, W204, W205 Moderator
Amethyst 2001 C320 with 351,000 miles
Joined
·
1,737 Posts
I'm 99% sure you're due for an alignment.
 

·
Registered
2013 VW Golf Sportwagen TDI, 2011 Mazda 2, 2000 E320 4Matic Wagon (retired),1994 C280 (retired)
Joined
·
3,490 Posts
I had the same problem on my C280 and the culprit was a bent lower control arm. It was easy to diagnose. I took the car in for an alignment and they alignment computer showed that the right-side LCA was 3/4" further back than the left side.
 

·
Registered
Joined
·
9 Posts
Discussion Starter · #6 ·
lovemyc280 said:
Switch the two front tires and see if it pulls to the left.


If it does then rotate that tire to the back or replace.

That is the first, and cheapest check you could do before getting into suspension parts.
The tires are directional tires, hence I cannot rotate them left <-> right. This is the second set with the same problem, so I don't see the tires as a culprit. The earlier set of tires were Pirelli P6000 and the current set I'm running are Potenzas.
 

·
Registered
Joined
·
9 Posts
Discussion Starter · #7 ·
n0alpha said:
I'm 99% sure you're due for an alignment.
This is not a new problem. The car was aligned twice (both times by the dealer) when I had the Pirelli's on, the car has been aligned three times (once by the dealer, twice by the Wheelworks). Unless the alignment machines are not calibirated well, I don't think alignment could be a problem.
 

·
Registered
2003 S430 Sport Edition
Joined
·
1,326 Posts
I had that problem once. When i take off it use to drift to the left a little. At that time i had on the right Pirelli and on the left Federal. I took the car to a tire specialist who has a fully computerized car alligment system. Since my car was a little off line.

I bought 4 new Conti Premium Contact and allign the whole car. Eversince i don't have this problem again. Make sure that when you are changing the tires to have the same weight load (95H) as described in your manual.

Eddie
 
1 - 8 of 8 Posts
Top