Quote:
Originally Posted by DennisMenace
I am about to install a KW V3 with 19 mm raised spindles. Just ordered the Tarret Bump Steer Kit. Any advice how I can identify the „ideal“ bump steer correction for my car? I assume I cannot just take the 42 mm and apply it to my car but rather need to adjust it according to my ride height. Thanks a lot for any advice!
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It's easy enough to DIY as long as you have a means to accurately and repeatedly measure toe, such as toe boards.
Ideally what you'll do is set your ride height to your liking and set toe to zero. Then back off the ride height adjusters so the ride height drops below normal by some convenient amount, say 1-1/2" check toe at that point, then raise the ride height above normal by a similar amount with a floor jack and measure again. This will give you an idea where you are at, and hopefully, inform you as to what you need to do to resolve the bump steer. The process will tell you you the overall toe change over 3" of travel which is plenty.
When you make a change to the bump steer spacers you'll need to reset the basic normal "zero" point then start over.
It's relatively time consuming and requires patience but can be done. The alternative is to take it to a race prep shop with alignment equipment and a bump steer gauge and have them do it for you.
I did a post on it a few years back, I'll see if I can find it. (EDIT - see the second post of this thread!)