ditto, I run 512's as well and am pretty happy with them. I scored 4 225/40/r18s for 380 shipped to my door on e-ghey. They are certainly not snow tires, but they do ok.

 

BFgoorich all the way Gforce KDWS came stock on the GTO, the MER Marauder and some others I cant really remember. and I love them I have them on my Mustang for my Daily tires. I have some Falkens now caus they came on the car but once they are gone BFG any day of the week.

just to add alittle the Marauder pulled better than a Porsche on a lateral skid pan

 

ahh... what porsche, a 1956 Porsche 356 with old school VW beetle sized tires..?

Current 911S pulls... 0.92
Current 911GT3 pulls... 1.02

Marauder pulls... 0.88(although still impressive for thae heavy ba$tard)