You can get Baja Boss M/T in a 15 inch rim... 33" & 35"
Edit: And I love the BB M/T's on my Gladiator... they are just loud. Never a puncture, grips fantastic on all the surfaces I've put them on, and I'm approaching 40k miles on them rotating 5
I also have two sets of the Baja Boss M/T's and am quite satisfied with their performance.