Quote Originally Posted by Whiteline
- HRT's V8 Supercars use front rates of around 12 kg on a car that weighs considerably more, runs on slicks and would lap Wakefield in under a minute.

- Our P-Rex XRD (97 Sti) used 8.5 kg to do the 1:05's.

- The fastest road based car we run at the moment is Project EVO VIII which is primarily setup for tarmac rally but was configured for slicks for an endurane race at Wakefield last December. It qualified 2nd on the grid at 1:04's and used 9 kg.
btw - i always throught comparing spring rates between different cars was pointless due to different motion ratios as defined by the type of suspension system?