Originally Posted by daleburr

Tried it twice on low/medium grip tarmac and didn't like it. Even set to 3.2deg toe it had very little rear grip. Probably works okay on RIDE tyres (which understeer a lot) in high traction conditions, but not much use for UK racing.

The PSS inserts are good though, they're worth having. More stability and consistency with minimal loss of steering. Couple of setup changes and you've then got more steering and more consistency = better laptimes.