Have 09 G37 Coupe with Tien Spring Kit. Found pre owned Volk GTS 19's +30 front and +18 offset rear.

Have SPC front/Rear camber kit.

How much negative camber will have in the rear in order to make +18 offset fit?

Can handle -1.5 maybe -2, but anything may be to much for 500+whp.

Thanks.

 

Depends how wide the wheels are, should be OK up to a 9" rim over that and the camber will come into play.

 

Those offsets are perfect for a Z, and a 245 isn't going to handle 500 hp. Ever.

 

I know they're Z specs. Being I can get my dream wheel at a discount making me want to take the chance.

If that's the case I'l just go for looks with nice camber in the back, so +18 can fit.

Driver her once a week which is another reason why I believe +18 offset won't be a big deal.

BTW I get it to hook decent with 245/19 it's all in the roll of the throttle.

If I want the car to hook at WOT that would be another thing, but then I would start breaking parts which is something I rather not do.

Was going to put 285/19 on the rear, but with the +18 may have to just keep it 245/19.

 

19X10.5 rear. Using 245/19.

 

I think you will be fine. This is my car with 20x10.5 +20 rear wheels and 255/35R20 tires. I am lowered on Eibach Pro Kit springs and have the full array of SPC alignment kits. My rear camber is about -1.7 to -1.8, which is at the far side, but within, specification. My toe is set to 0. Other than rubbing the fender liner, I don't think you will encounter any issues since your wheel will extend 2mm further outward, but your 245 tire will be 5mm smaller on each shoulder. Also, the Continental DWS tires I have run pretty wide.

 

Thanks for the input.