After driving around on my 38s I've decided it's time to re-gear. Now all this gearing stuff is a little over my head right now. I hoping someone will help me calculate what gear I need. The rig is now set up like this: fj80 axles with 4:11 thirds stock slit case 4l60e tranny 38" tires With the 38s I think I'm feeling the tranny slip while driving up hill while under hard power. I bolted up some 275/70/16 tires I had sitting around and the difference is amazing! Until I re-gear I may run these, even though it looks ridiculous. What would be the equivalent of the 275/70 in r&p gears? Someone educate me.