Any down side?
 

I have ordered a set of lowered (25mm) and stiffened springs. Do I need to consider anything else after fittment ? Will tracking etc be affected? Does lowering alter toe in/out.

C

the rx-8 probably dosn't have a lot of bump-steer so the front toe shouldn't be effected too much. you might have more camber depending on how the suspension is set-up. get an alignment done anyway as the tyres are too expensive to wreck for under $100 for an alignment.