Do you have simulators? If so, look for the simulated lug nuts with the dimples in the side. Those unscrew (there are 2 of them) and then you can take off the cover. You should have a "lug wrench" that fits those. I think they are 1 1/8" or something close to that size. The ones that do not have dimples in the side do not come off.
1999 Newmar MACA 3796 F53 6.8L
2016 Ford Edge Sport
Roadmaster Sterling A/T with Brake Buddy Select