How to Measure Bump Steer

Spreadsheet download: www.wesduenkel....
How to measure and adjust bump steer (also called roll steer or bumpsteer) using a ‪@MaximumMotorsports‬ bump steer gauge. Step by step how to record the measurements with a dial indicator to get the bump steer curve. A few short cuts and how to adjust the spacer stack to get faster results. Example is an ‪@ford‬ Mustang IRS with ‪@KennybrownPerformance‬ suspension.

[@bradgrissom5738]

Nice video Wes!

[@Mustang-Geek]

Thanks!

[@jaigonmal]

Great video. I made my own tool based on what you have. Zero bump steer would be great but what would be an acceptable range to strive for?

[@Mustang-Geek]

I think Maximum Motorsports recommends less than 0.050" per 0.5" of bump travel. But, you can usually get it well under that.

[@jeffryredding481]

Can you explain the “toe 1” and “toe 2”
Measurements in your excel file. Where/which side? I am confused as there is only 1 dial?

[@Mustang-Geek]

Oh, good question. They're just two "measurement sweeps" to get an average. Basically, do the procedure twice and get an average to minimize errors.