There should not be any rubbing issues with the 9's up front depending on how low your car has been lowered. The only issue I have seen is with extreme turns when parking. If you find this happening you can install these steering rack limiters. The part number is LRS-3504HDW. The lip on the 10's is about one inch. We designed these to look as close as possible to the original Pony wheels and enable you to get a fatter tire on the back.