Quote:
Originally Posted by Disneygrad
Once again, X5 Meister takes the cake. Fact is and according to Ted's BMW, Mercedes, Audi who is a CERTIFIED BMW Mechanic, the rear toe-in on all X5's is, in his words: "EXCESSIVE" And to further quote: "Always has been and he does not know why." He says the wear is especially noticible on "soft" tires and tells me I have perhaps 30,000 miles on my brand new 22" tires.
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typically, toe is designed into the stock alignment specs to
1. increase high speed stability - the tires facing towards each others push the sides of the car towards the center (in). if you neutral out the toe, the vehicle can wander more at higher speed.
2. reduce squirm on acceleration - when you accelerate, the rear wheels tend to go to toe out. when rear bushings go, your toe changes even more, which is why the rear seems really loose on acceleration.
making your toe more neutral in the rear will improve your wear, but at a cost (stability)