Help me clean these wheel wells

Does anybody have any good tips or tricks to get the flimsy inside plastic rear wheel well clean? It seems like no matter what I do for cleaning it just doesn't come clean and looks horrible

 

I have tried a power washer, tried a brush water combo, I just hand wash with a brush and soap. Once clean I treat it with a plastic restore product and spray down regularly. The dirt comes off easily. Once it loses its restored properties I reapply

 

i stop worrying about it. i run a sponge over them with some wheel cleaner, and call it good. too much texture in most cases to get all the grit, and they're only going to get messed up in a few hours anyways.

*i should also note, the only reason i've ever cleaned wheel wells is that my first job was an auto detailer at a Saab dealer, and the head asshole lead salesman got his rocks off by coming down to the detail bay with an actual white glove and checking wheel wells for dirt. if he found any, we would get reprimanded and then need to re-do the entire car, which always led to us getting screamed at for the backlog the re-work created...

so to say it left a mark on me, psychologically speaking, is an understatement.

 

Embrace it. Truck does truck stuff. Truck likes being dirty.

 

I’d steer clear from power washing stuff. Those things get water in all sorts of nooks and crannies that don’t want to be blown apart with hydro.

Remember that TW person who found out what happens when pressure-washing the paint? He hit a small nick and the water shot into it and ballooned the paint out into this saggy ‘many inches by many inches’ breast explant. Not ideal! Unless you’re Dr. Malvolio.

 

The surfaces that don't wear a color coat will get the occasional hose down, but that's it. I expect the underside to be mildly gritty at all times.