Re: 255/35/18 on the front!
The Hankooks Ventus RS-3's are super sticky but wear out fast. 140 treadware tells the story. I wouldn't recommend this wide for the street, it's just not needed. But for the race track it could be worth a lot of time.
I have K&W Variant II on the car but unlike other cars, it consists of a spring with adjustable perch and a Koni shock. Much, much heavier duty.
Les