[Notilloc]

I run the Apex PS-7 19x10.5 with Nitto NT-01 285/35/19 tires. I like it a lot, they work well but brake cooling becomes a MAJOR issue with the stickier tires. I went with the 10.5-inch wheels and 285s because I don't like the idea of running a spacer on the track. I'm pretty sure 305s and 11-inch wheels require a spacer. Also, I'm pretty sure that most 18s don't fit over the Brembos. I had a hard time getting my questions answered on that so I went the safe route and got the 19s and the 10.5 inch wheels. Wish I could give you a better answer but I recently went through the same thing and I got a lot of back and forth and I didn't want to take any chances. As to the gearing change, I have a different transmission and rear end than you but the smaller diameter wheels changed my final drive to about 4.05ish and I prefer it over the stock gearing on the track. It helps a little with drive out of 3rd gear turns but you have 250 more hp than me so I'm sure that isn't a concern for you.