i have a 40mm offset right now, and am looking to have around a 44-45mm is there any way to mill down the wheel to achieve this?? i imagine there is. BTW they are 16X7 slipstreams. im trying to put a camber kit on, but the only way i can do this is with a bigger offset, unless i take off my fenders, hehe

 

you can get a new wheel.

 

Some wheels can be, I would contact the manufacturer and see what the highest offset they recommend with the exact wheel you have. We had a set of centerlines machined like this after talking to them, although, we could only take off a couple of mm. Most rims you can't, there just isn't enough metal there to do it safely.

4-5 mm is a LOT though.