Originally Posted By: OVERK1LL
Originally Posted By: fdcg27
With strut suspension, the wheels and the tires mounted to them follow the roll of the body, so while the outside wheels are more heavily loaded, they also have positive camber, which is undersirable.
No, the outside wheel gets NEGATIVE camber (the top of the strut is further inboard than the bottom of the strut, when it compresses, the wheel develops NEGATIVE camber, NOT positive camber) in a corner, which ensures a larger contact patch and the tire is rolling over less on the sidewall.
The INSIDE wheel develops POSITIVE camber due to the extension of the strut and body roll, and this provides the same effect, a larger contact patch as the camber angle is articulated against the roll of the body through the turn keeping the outside edge of the tire in contact with the road surface, versus rolling over on the inside edge, which is what it would try to do.
This is a normal strategy on German cars, and one of the most desirable features of a premium design. The alignment of the wheel to the road is managed throughout the entire travel of the wheel.
This is one of the secrets to car design, tuning the suspension is more important than anything!
Originally Posted By: fdcg27
With strut suspension, the wheels and the tires mounted to them follow the roll of the body, so while the outside wheels are more heavily loaded, they also have positive camber, which is undersirable.
No, the outside wheel gets NEGATIVE camber (the top of the strut is further inboard than the bottom of the strut, when it compresses, the wheel develops NEGATIVE camber, NOT positive camber) in a corner, which ensures a larger contact patch and the tire is rolling over less on the sidewall.
The INSIDE wheel develops POSITIVE camber due to the extension of the strut and body roll, and this provides the same effect, a larger contact patch as the camber angle is articulated against the roll of the body through the turn keeping the outside edge of the tire in contact with the road surface, versus rolling over on the inside edge, which is what it would try to do.
This is a normal strategy on German cars, and one of the most desirable features of a premium design. The alignment of the wheel to the road is managed throughout the entire travel of the wheel.
This is one of the secrets to car design, tuning the suspension is more important than anything!