I've never been a huge fan of poly bushings. Last week I decided to measure different bushings with my durometer. The results vary depending on which company made the bushing. The yellow one is what Energy Suspension created for me after I destroyed the red one. Just for a comparison I checked my Michelin street tires. They measured 75 on this scale.
These various companies can create bushings in just about any hardness you want. If you track your car you want something in at least the 94 range. 100 would be best but then we're talking aluminum.
Richard Newton
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05-19-2012, 03:58 AM
Derek Bell testing my car.
1973 Porsche 911
