In Cincy had a similar issue with fronts wearing faster than the rears like Aaron. In qualifying I would start around 74 rear 67 front. After warm up and qualifier (about 8 minutes) I was wearing 1mm in the rear and 1.75mm in the front. My wear seemed not as bad as Paul's or Aaron's ut maybe going sideways doesn't help Paul
In Ft Myers and Toledo (the only other places I have run the Mugen car) the wear seems to be even front to back. I typically have been getting the same split before and after a run. Maybe it on the driving style too. I think Paul drives a little more aggressive (could by why hes always fast!!!). Aaron seems to be more smooth at times but maybe the car itself for Aaron makes more rear wear as he stated.
Also I run 90% of the time 35's GRP all the way around.....