Well the stock Duelers are getting bald and I'm shopping for some new tread. Stock size is P265/70/17. How much bigger can I go without rubbing? 285 maybe? Stock suspension and no T-Bar crank. I'm looking at the Nitto Terra Grapplers and my next question is do I go with the P or LT tires? I'm not too worried about load rating since I don't haul/tow much, but the LT's are able to run much higher tire pressures, 80psi compared to 35psi in the P series. Would I notice any increase in mileage if I went with the Lt's at 60 psi compared to the P's at 35psi? I'm open to any other tire suggestions too. I do mostly on road driving, 75% of which is highway.