Hi,
I believe there is more than one way of causing bumpsteer but i may be wrong, ive been modding cars for nearly 30 years and have experience of people fitting wheels with too much offset.
if you move the contact patch too far away from the middle of the point where the kingpin inclination hits the floor you will adversly effect the handling
when you go over a bump the car will try to steer into the bump if thats not bumpsteer what is it??
anyone remember the carlos fandango ad with the anglia with oversize wheels!!
Ray
