We bought our new 03 FX4 in October, which came with the RT/s. This winter we have had LOTS of snow. For the most part I just go to 4HI and cruise around with no problems. Even with 2HI I had good traction. I'm not a fan of GY's and from experience know that once they start to wear, get rid of them! But this winter they have served me great, I had my truck buried up to the running boards, 18 inches of snow or better, and have had no traction problem with the 4X4. My next set of tire would be the REVO's or some BFG AT's though once these start to go! !