Grant@tirerack wrote:The finish issue is the main problem with the GT2. The bare alloy is going to pit very quickly and would require a lot of care to keep it looking nice. Much more so than a clear coated wheel. The largest I have seen work is an 18X8.5 ET35. A 30 would move it out about 1/4". As for the spacer, we have never used them and we would not suggest doing so. None of these are designed to use a spacer. The need to center with the ring right on the axle hub.