Hello Craig,
Here is the info that I've come up with when it comes to the 2 different rims and tires. I've seen 4 sets of FC rims for sale between 1200$ to 1600$ and there's an event at Sear point raceway in Sonoma this weekend and I may go there and ask around and see the FC contingent for their rims could be for sale.
Let me give you facts about the 2 different rims and tires, the rims and tires we are running now are weighing in at 9 lbs and the tires are 16.5 lbs. I just texted Brad at Primus and he said the FC rims weigh in at 11.5 ea I don't have info about the FC tires but I'm betting about the same at 16.5 lbs so the difference is 2.5 lbs of rotating mass, I'm not really sure what and where this is going to effect the FF car under braking, corning or accelerating a FF car but I believe the corning speed could be higher but slower coming out of the turns.
The tires are only (FF tires 22.5)(FC tires 22.0) so gear changing MAYBE? small ride height adjustment by .5" to get back to the setting you had with FF tires. The FC tires are .75" wider each tire but because were not going to have the side wall flex like with the FF tires, well it give more grip I will let you know after the 4. 1. 23 event because I have a FC coming to that event and we are going to mount his tires to my car for fitment, I'm hoping to drive on them with no setup changes for just the feeling the differences and can give you all some feed back.
Hello Jim, I hope this doesn't happen " But there are a sizable number of people with multiple new sets of Hoosiers. There'd be no way to get close to a well driven car with regular sized Hoosiers."
Ben