Skip to main content

Reply to "Wheel Alignment - Who do you trust to do it?"

Peter, tire scrub is simply the offset between the pivot center of the front upright and the center of the  tire tread. The offset can be positive or negative. Experts say that some  (undefined) scrub-radius is necessary to prevent a very nervous handling car due to tire kick-back and to use desirable self-aligning torque of the front tires in turns. Conversely, minimum scrub is reportedly vital in front wheel drive cars to prevent torque steer. Gianpaulo Dallara- who designed the Pantera chassis- is a very talented racing engineer, so I'm sure he did his best. But probably due to geometry quirks unknown to non-automotive engineers, 'some' tire scrub is common or unavoidable on most cars.

Ackermann toe-change is another such thing not well known. I checked our Pantera for Achermann many years ago, and yes- we have some.

×
×
×
×