What Wheels Do I Have, Don't Fit Right

[11555wally]

I'm kind of new to this truck scene and need some help. Yesterday I tried to take the rear tires off my 86 C10 SWB and ended up having to apply some heat after every other attempt failed. Can anyone ID the wheels I have? They are about 16 1/4" in diameter and about 9" wide. They appear to be alum but I'm sure that is just the coating. They have trim rings and a center cap. They were not rusted on as the garage had them off a couple of weeks ago. Can I just remove about a 1/16" of the center hole with a file or grinder to make them fit? Thanks for any help. Appreciate it, Larry