R4 tires are designed to be long wearing, not for traction. These new hybrid R14 radials are the ticket. If you have never had radials on a tractor, I suggest you find a dealer or neighbor that does and try them. You will eliminate the traction/horsepower issue with radials, because you will be able to bog the tractor down with radials. I ordered a new set of take off wheels from Ag Wheel Express for both tractors, the R4s will be the mowing & clearing thorny areas, grading, maintaining and building new roads tires and the R14s will be for ripping, plowing, disking and cutting hay tires.