I FINALLY got a new set of wheels for my Z. I'm NOT EXACTLY sure of the offset on these wheels though. I bought them used. They're 19" Axis Mod 7s. The tires are 245/35/19 all the way around. The front lip is about 2.5 inches and the rear is 3.5 iches. I believe they're 19x8 all the way around. I like how the front is filling up the wheel well BUT the rear still has a lot of space. The rear is filling up as much as the front. These wheels might have the same offset as stock wheels which i have NO IDEA what the offset for stock wheels are. Could/should i use wheel spacers for the rear? if so.... how wide should i go? i've checked websites online for spacers and the widest i found were 20mm. Does that sound right? Any specific brands recommended? how hard is the install? If i get them...anybody willing to help? hehehe thanks for any input...in advance.