Im running 415rwkw atm cause too stingy to run E85 plus PITA drive every few days to servo cause of E85 efficiency and right foot action. I think honestly 390-410rwkw max is a perfect goal to strive for, not just because anything more is wasted in tyre spin but also reliabilty... I might be able to squueze some 265 invos on my 19s but watching marks leave lines on the freeway with his 265s just makes me wonder if it's worth it. Yeah box still standard, tyres still have plenty of tread - the only time you'll see me in spirit mode is on cruises, other than that im pretty tame.. mainly because I went through the headaches with the BF I ain't gonna do it again