Well I can tell you that:
18x9 +38 CES hit the lip in the front ~half an inch
18x10 +38 CES hit the lip in the rear ~half an inch
You're going to be 28mm more offset and more hits in the rear, widebody needed. I am pretty sure you are asking for serious suspension and handling trouble with +11 offset, that's way beyond factory ~+50.
I am probably going back to Supra TT oem 17's at some point.
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I was thinking rolling the front fenders and putting widebody rears on might resolve this. One of the local guys is running 18x10 +24 w/o too much problem.
