How do I find out what the offset on my wheels are? The are 5Zigen 5ZR 18x9 and 18x10's. If you can help, please do. I'm wondering because my back wheels looks fine, but my front wheels sit "IN" the fender wells a little and i want them to fill up the whole thing. Im going to get new wheels so I wanna make sure to know what to get. Also, I'm going to sell mind, so I would like to tell everyone what the offsets are. Thanks in Advance!!