Agreed, any dealer/wholesaler/etc will tell you that. And in some cases (mine) people pass on the vehicles. Not trying to knock the OP, just giving my experience with friends that are wholesalers and dealers, and mine too.
Yeah, definitely not knocking him at all. I've had some experience in the car/used car biz, and depending on the parts/modifications, they can actually make things much more difficult to sell. Wheels usually aren't a big deal, so I wouldn't sweat that, but don't try to jack up the price because of them, either.