I've been running a set of 31x10.50x15 KO's on my 04 SE TJ with the 2.4 and NV1500 5speed, for a while now, and seem to do pretty well so far with stock 4.11 gears. I believe that the 31x10.50x15 KO's weigh a whopping 46lbs each which did'nt slow me down much on a hill.
Im looking to go the route of 33s,BB,and 4.88s in the future, when the funds warrent. I know that the 33s are a bit heavier, but the ProComp AT weigh 50lbs, as do the Geolander AT tires, a whopping 4 to 6 lbs more, than the 31s.
Even though thiese two tires are lighter than most of the beefier tire out there, will they still kick my a$$ on a hill with my stock gears?