That size shouldn't be a problem for a 4x4. The measurement comes out to 33.9 x 11.6
If you go with a 285/65/20 you end up with a little taller tire and not quite as wide.
34.6 x 11.2
37-13.50's fit on a stock rim. The bulge though. Alot of people say the rim is too narrow but the Toyo website recommend a 8.5" wheel so it's close enough. I have 20,000 miles almost and mine are wearing very good.
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