Guest Writer
Guest Writer Writer
4/4/22 11:58 a.m.

Story by James Clay

How do you set up a car, whether it’s a new build or one that you’ve been running for years? At the end of the day, it’s about keeping those tires happy. James Clay, pro driver, president of BimmerWorld and graduate of Virginia Tech, walks us through his team’s progress, whether it’s BMW’s latest GT3-class racer …

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AndyHess New Reader
4/4/22 1:38 p.m.

As part of chassis setup, one helpful article would be how to accurately align wheels at a home shop, with a less than level floor.  Toe-in is relatively easy using string setup similar to the one in the articles image.  But three things: what are reasonably priced camber measurement tools.  How can such tools measure accurately if the floor is not perfectly level (Making an assumption that there are no reasonably priced laser measuring tools for camber).  And three, how do you get under the car to adjust without raising it - and if you do raise it to make a camber/caster adjustment, making an educated guess on adjustment, then setting the car back down back in the exact spot and the exact same ride height in order to replicate an accurate re-measure?  Thanks GRM.

Colin Wood
Colin Wood Associate Editor
4/4/22 2:04 p.m.

In reply to AndyHess :

Really good questions. Let me take a look and see if we have anything related to what you're asking about. And if we don't, I'll be sure to pass it on.

Keith Tanner
Keith Tanner GRM+ Memberand MegaDork
4/4/22 2:46 p.m.

In reply to AndyHess :

The way to deal with a floor that's not level is shims. Put down some sort of platform for each wheel and then shim them all to be level.

Your cellphone is a camber measuring tool, especially when combined with a length of metal that goes from lip to lip on your wheel. You can also buy fairly inexpensive angle gauges.

The way to get underneath without raising it is to use a set of hub stands. If you're having to lift to make adjustments, you're probably just lifting one corner at a time. That makes it easy to drop back in the same location because the other three wheels won't have moved. Really, if your car is moving laterally when it's in the air you have another much more serious problem.

BimmerMaven New Reader
4/5/22 6:11 a.m.

Alternatively, drive up on 4 ramps . Shim the ramps.

Mark the ramps, shims, floor for next time.  Being consistent and repeatable is more important than the actual measurement .

4/5/22 12:30 p.m.

My method was the tried-and-true floor tiles method.  After I got four stacks in the right place and leveled, I spray-painted the outline of each stack on the floor and wrote down how many tiles in each stack.  So after that it was easily and quickly repeatable.

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