My car never had the Rota's on with standard ride height, but at 40mm lower they didn't rub at all, not even on full lock.
They car has now got coilovers and been dropped to -59mm on the rear and -63mm on the front. The rears have plenty of clearance (could easily drop further), the fronts now rub on the bumper bracket when compressed with the wheel turned. The rubbing would probably occur on the standard wheels too. Ross' angle grinder will fix this.
Low pics to follow, it looks horny as hell. I hate the way the front of the 182 sits higher than the rear.