these do not rub....the rubber you see is from a burnout on freshly laid black top with my 8" rims and 275s.....it made one hell of a mess and slung the tar/rubber everywhere. cleaned for a long time with a lot of wd40.... still missed some places ... this was a couple years ago, I now have 3M vinyl protecting the quarters after that mess
rims now are 10" with 4" backspace....rear end is a quick performance 9"