The way I see it, it's a very mild understeer effect that isn't costing front tire grip to get - just that the rear slip angles would be just a little smaller than they would be on 11's. Same philosophy as the 10"/11" combination on the 1LE, only milder.
Could be it's a way to let you get back into the throttle just a little more a little sooner.
If we're going to shoot for a 'square' wheel width setup as well as the 'square' tire size arrangement - why not 11.5's all around . . . just idly wondering . . .
Norm
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