Ok I am running a08 rubicon 4dr auto with a 4 inch ome lift I have 285-70-17 falkens ( actual measurement 32.0 ) now I am either going with 305 70-17 nitto terra grappler which is supposed to be 33.8 or falken 315 70-17 which are supposed to be 34.4 does any one have actual measurement of either of these two tires

 

I do know that the 315 runs smaller than a 35 and my bro runs the 35x12.5x17 falken and mounted on jeep measures around 34.2. Heard the 315 mounted is around 33.5-33.75