For my most recent and more accurate analysis see this article.


Over the years I have analyzed and tested many aspects of the SW20 MR2 suspension, and posted most of it on the MR2oc Forum.

Suspension Geometry:

Front Suspension Analysis

Rear Suspension Analysis

91 vs 93+ Anti-Dive

Effect of Tire Diameter on Roll Center Height



Progressive Springs and the "Falling Effect". RCA Benefits.

Helper Springs vs Tender Springs

Spring Rates and Ride Frequencies


Wilhelm Raceworks Parts:

Rear Bump-Steer Adjustment

Wilhelm Raceworks Part Strength


Koni Shock Dynos:

Koni Double Adjustable Race Dyno

Koni Sport ("Yellow") Dyno