I can't see the angle of the upper bj, but those appear to be fine. Some of the levels I've seen have the uca practically touching the coil. These are nothing like that.

 

My son finally got his windows tinted today. Truck is looking sharp!

 

Looks good

 

I've been running 275 60R/20 for a few years without any problems on a 2008 FX4 Supercrew. They are just shy of a 33. I have a Rancho quick lift leveling kit. You should be able to find a comparable tire in 18s. I do have a tuner and set my tire size to diameter: 31.91 in/ 810.50 mm so the speedometer reads correctly. You can Google the overall tire diameter: "tire diameter <enter tire size>." Good luck.