well Im modded, not in the 400hp range, but I do run those tires.

Cold, they are a bit slick (nothing crazy), they warm up fast and stick like glue. A bit noisy on the HWY, but quieter than the Goodyear RSA's that came stock. The exhaust / radio drowns that out anyway.

Only had them on a week, cornering is much improved, ride is fine.

245/45/18 mounted on Sport Edition KV5 18x8