Quote Originally Posted by ferrarifixer View Post
It's usually done by using different inner and outer rims... but these wheels are expensive custom wheels and the rims are almost as expensive as the wheels in entirety.

Many 3 piece wheels actually use an alloy "shim" with a seal fitted both sides, an O ring... All I need is for a similar shim type thing to be about 20mm think....

but I've never seen it done before either, so thought I'd ask someone with more wheel experience than me.
Will be interested to see how you go if you do it. Any idea on the brand of Rim? I had ROH Modena 3 piece on the 348 and the guys there were happy to help with changing the wheel patterns to suit that car when initial fit wasn't quite right.