I jacked up the car and looked at the tires today.
Both of the back tires have a large negative camber. The left tire has about an inch of tread on the outside that is hardly worn, and the inside of the tread sets down while the outside is still a 1/4 to 1/2 inch in the air. The right tire has about a 1/2 inch on the outside of the tread that is hardly worn, and the inside sets down while the outside is still more than a 1/4 inch in the air.
The front driver side tire has a positive camber, about a 1/4 inch of the inside tread is hardly worn, and the outside of the tread sets down slightly before the inside of the tread. The front passenger tread is evenly worn, and the tread sets down evenly. The front wheels are not nearly as bad as the back.
Quote:
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When a wheel is set up to have some camber angle, the ... tendency to turn increases the rolling resistance as well as increasing tire wear. A small degree of toe (toe-out for negative camber, toe-in for positive camber) will cancel this turning tendency, reducing wear and rolling resistance.
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My impression from this quote is that there is not enough toe out in the back tires to cancel out the large amount of negative camber, and the front driver side tire doesn't have enough toe in to cancel the positive camber. However, if the camber in the back is corrected with a
camber kit, then the toe wouldn't need to be adjusted as much to compensate, which is a better solution. I'm looking forward to getting a camber kit and then adjusting the toe, to increase the tire wear and reduce the rolling resistance.
I'm interested in your comments about adjusting the toe and camber in your cars.