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Universal

RE Chassis Setup Sheet

The perfect garage or track-side companion for those that love setting up their own race cars.

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Bilstein Damper Rate Conversion

Bilstein has an uncommon way to rate their damper forces. Easily convert their rates to the more common American 0-10 inches per second damper ratings.

Gridlife

GLTC Power/Weight Calculator

Enter your modifier percentages and estimated power level, and the output will be a range of competition weights and nearby power levels, along with the allowed tire size for each. Use this to help dial in your GLTC comp form.

BMW E90/E92 Chassis

E9X Wheel Spring Rate Calculator

Wheel spring rate calculator for all E9X chassis cars. Includes the front and rear motion ratios, including rear "true coilover" and "divorced spring," for comparing spring rates.

BMW E30 Chassis

E30 Wheel Spring Rate Calculator

Wheel spring rate calculator for all E30 chassis cars. Includes teh front and rear motion ratios for comparing spring rates (only with divorced rear springs). Test

Group N Spring + Damper Valving Rates

Chart of the BMW Motorsport Group N spring and damper rates for from the E30 M3 racing era.

BMW Motorsport Group N Catalog

The official BMW AG parts catalog for the E30 M3 Group N program. Presumably from the late 1980s or early 1990s. Some of these parts are still available, although most are probably NLA.

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