The Rush SR uses shim stacks to set camber. Three sizes: Large (2mm), Medium (1mm), Small (0.5mm). Adding shim thickness makes camber less negative. Removing it makes camber more negative.

This calculator finds the shim combination that gets you closest to your target while staying within the series limit. It also tells you which camber bolt length to use based on total shim stack height.

Don’t be surprised if your shim stacks look completely different left to right — 4mm on one side and 9mm on the other is normal. The front left changes angle differently than front right. This isn’t a manufacturing defect. The suspension geometry responds differently on each side due to minor frame tolerances, and the relationship between shim thickness and camber angle isn’t perfectly linear in practice.

The default values in this calculator are based on a March 2026-manufactured car with current-production parts and control arms. Older cars or different control arm setups will be close but not identical. That’s why calibration matters — measure your car, not someone else’s.

The degrees-per-millimeter rate varies between cars and between front and rear. To calibrate: measure your current camber, swap exactly one shim, re-measure. The difference in degrees divided by the shim thickness in mm gives you your rate. Run front and rear separately, on a flat surface, with driver weight in the car.

The default values (0.340 °/mm front, 0.360 °/mm rear) are reasonable starting points, but your car will be different. Calibrate before your first event. For alignment specs and ride height, see the Rush SR Service Manual.