06 Z front wheel is 18/8.5 +35 with a 255/40/18 rear wheel is 18/9.5 +35 with a 275/40/18 I am going to order 15mm spacers for front and rear but before I do I just wanted to check if I will have to worry about rubbing. I got the wheels a few weeks ago, the tires are ordered but before I order spacers I just wanted to double check. My Z is not lowered and the fenders have not been rolled (and I dont plan too) Thanks

 

You need much bigger spacers than that. Those are terrible offsets and narrow wheels.

 

LOL... those are the OEM wheels!

 

How much are you dropped?

Also you will want a 25mm spacer in the rear and possibly 20mm in the front, 15mm is ok, but you want to stay as close to the original specs as possible otherwise you will have frightful oversteer.

 

20mm spacers front and back will be fine.

 

No they are not

 

The OEM wheels are 18/8 and 18/8.5, the OEM tires are 225/45/18 and 245/45/18. I think the OEM offsets are 30mm and 33mm so 35 isnt that much worse. If I use a 15mm spacer the new front and rear will be a 20 offset insted of 30 and 33. Plus the new tires will also be wider, the front will be going from 225 to 255 (the tire will be 30mm wider then the OEM tire) and the rear will be going from a 245 to a 275 (this will also be 30mm wider them the OEM tire) so if I am getting this right this means that both the front and rear tires will be sticking out 30mm farther then they did before (with the OEM)??? Please let me know if I am getting this wrong. Thanks