You might not need to remove them yet, mine were worn to the point that the wheels fell off, "cause" the scew could no longer hold with the hole in the wheel rounded out. They are held by a screw, behind the fake hub covers. Only way I know to get to the screw is to break the hub covers off. They are glued on but some come off easy and some didn't. I even tryed splitting the wheels in half, worked on a couple, but the hub thingies still blocked access to the screw. Some came off easy some broke off jagged. If they break off bad they'll need some repair' IE modeling, to reinstall them. This is on a Bulldog, Pershing might be the same but I dont know. You can lube them without removing them. Lube the wheels from behind where the axel and the wheel join, and you can see were to put the lube in. Thats with them still on. Remember it was only after extensive run time that they were worn this bad.