Hello Maybellene...or is it Matt?

Just going by the tires I took off, 7.50 x !7, all 4 of them.

My rims are 3 piece, kind of like the bead locks on off road rigs but instead of screwing the outside bead on there is a spring steel ring that holds the outer bead on. I have seen 17.5" tires...darn it, now I'm going to have to measure the rims. dang