Chassi setup for 18"/18" semi slick option?

[#84]

I run my car with 225/45-18, respectively 265/35-18 with semi slicks on track days. The way it was ran with the 18" Team Dynamics rims that Lotus Motorsport offered for the Evora a few years back. I understood that it was the way it was set up with the Avon ZZR's. Right?

What I am curious about is if anyone who currently is active in the forum have experience racing, or just seriously run the Evora on track days with this set up?

My concern is twofold. The track width is heavily increased in the rear with different ET / offset to provide clearance for the lower wishbones. But the rear ride height is also dropped quite a bit (around 11 mm) due to the smaller diameter of the rear tyres. Both those changes are positive for rear end grip and traction, but have a negative effect on the front/rear balance => Understeer.

All comments are welcome. In particular I am after experience with compensation in the front (lower?) or other tricks in chassi setup.