Byots,
Bump steer is a fascinating topic. In practice it can make a great deal of difference in a car's handling. If there's enough, it can make a car totally unsafe to drive
It takes, however, more accurate gear than a yardstick/tape measure to measure bump steer. I'd suggest if you are serious enough to invest some time (and maybe some Excedrin) in this area that you start here:
http://www.longacreracing.com/articl...sp?ARTID=13#Q4
Not coincidentally they make some fairly inexpensive tools to measure yours (and all your friends'
) with.
Hope this helps,
Tom