Stock trd sport rim offset.

I have 285/70/17 ko2s.

Currently on Stock trd Sport rims. (17x7.5 +30mm offset with 1.25" spacer.)

It rubs the UCA full crank.

I did some conversion calculators.

With the +30mm offset with the 1.25" spacer, that would bring it to a total of -1.75 offset (4.25"ish back space..

The guy at discount tire said 17x9 -12 (4.53" backspacing), will give more clearance to the UCA, than what I already have. ( I don't care about rubbing cab/fenders)

The conversioncalculators say the 9" will sit closer to the struts? Is the guy from discount tire mother fuckin me? I really don't want to buy rims and have them not fit. I overland my truck almost every other weekend and I like the 285s but I don't like it hitting the uca either.

Jba HD uca
5100s @ 0
Ome884 coils
Stock trd Sport rim 17x7.5 +30mm offset
1.25" spacer