Pulling, balancing, steering
Should I have them attempt it again? Or should I do what some have suggested and take it to a local shop recommended by Porsche enthusiasts which concentrates on wheel alignment.
Is the right pull something that can even be fixed or is this something inherent in the E-series which cannot truly be fixed? In this case. are they likely to make the situation worse by fixing this symptom and '"breaking" something else>
Should I have them attempt it again? Or should I do what some have suggested and take it to a local shop recommended by Porsche enthusiasts which concentrates on wheel alignment.
Is the right pull something that can even be fixed or is this something inherent in the E-series which cannot truly be fixed? In this case. are they likely to make the situation worse by fixing this symptom and '"breaking" something else>
First, eliminate the obvious: has anyone tried rotating the tires front to back or side to side? This is always a prime suspect where pulling is involved. However, since the steering wheel was off from the get-go, I suspect pure alignment as the issue.
Our C240 pulled and had a misaligned steering wheel that was evident on my test drive. I stipulated in the sales contract that this would be corrected immediately. The first attempt, using the std. alignment specs and after intalling the caster kit, improved it but did not cure it completely. The second attempt, after I insisted the svc. manager assign the most experienced tech, solved the problem. He had the idea to slightly deviate from spec, and gave one side a different caster setting from the other [caster influences how easily the car can be turned in either direction]. Voila, now the car tracks straight and true, and of course the steering wheel centering was handled as part of the deal.
Suggest that a different caster setting might be necessary [right front vs left front] and see what happens. In any case, a state-of-the-art alignment rack is assumed, and you have to be dealing with someone who knows their stuff.
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After that, it was about 90% better, still pulling right but not so bad and the vibration at 60mph was reduced, so I lived with it. He said the exact same thing about slightly deviating from specs, etc to make it better.
5K miles comes along and I get my tires rotated and BANG, the pull is back even worse and the vibration massages my hands on the wheel. Fed up, I took it to NTB to get it fixed. He said it could not be aligned because the left caster and right caster are off by 1.5 degrees which requires the kit to be put on for alignment. Also he said 2 out of the 4 tires were not round and so he could not balance those 2 tires and could not do the alignment either.
I took it back to the dealer armed with this info, he says he does not know what NTB is talking about with the 1.5 degree separation, there is no adjustment to the caster. Also, he said the tire does not balance right, but when he puts it on some pressure machine it is in spec, so it can not be replaced under warranty, but he is making some adjustment so make it okay. But he said that when I rotate the tires again, it will probably be all messed up again.
He said he is still checking into all of this and will let me know the final things tomorrow, but this sounds like total BS to me. Anyone have any thoughts??
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My current E-500 with 12,000 miles tracks perfect and doesn't appear sensitive to tire pressures in the front. I had in aligned prior to one year of ownership at about 10,000 miles and it seems even more stable.
Be sure to have them fix this and I agree with MrAMG, you need to find a dealer that knows what they're doing in the alignment area. It can be tricky, especially with the air suspension and how it interacts with normal mechanical alignment adjustments.
BTW, he still does not know why the NTB alignment machine shows 1.5 degree difference and he is still investigating that.
The SA is a good guy so he has said he is still going to find a way to replace all 4 tires, but if he comes back and says he can't I'm going to have to raise hell....
I still have vibration at 60mph, and steering wheel is a slightly off center.



