Originally posted by m!key: well the rear wheels are spinning but the engine is in the back so.....
The problem is with stock power (425hp), you can chirp the tires shifting into 4th gear (and spin like crazy in the lower gears). This is with the stock 265/35R-18 DOT-R semi-slicks.
I'm definitely going to need to find a solution to get more grip back there, even with 60% of the weight in the back.
Wow! And you're still adding more power? You track the car, right? Just out of curiosity, why are you adding more power? Is it not fast enough or bragging rights? What kind of suspension does the car have, front and rear?
More power is mainly for the higher speeds. I'm going to be working on the aerodynamics too. I also hope to be able to fit 285 or 295 tires with slightly wider wheels. It's such a close fit though, it'll require a wheel manufacturer to come down to actually measure everything.
The suspension is a bespoke coilover with Dynamic Suspension dampeners and Eibach ERS (Eibach Race Springs) springs. There's a front sway bar, but no rear.
Here's a picture:
The lower end M12 GTO-3R gets a bespoke coilover Bilstein shock and H&R springs, with no front sway bar. You can see them in the back:
