I have a newer GMC 1500 4x4 and it pulled the 25 just great. but, it did not have sufficient braking power for the 25. when we sold the 25 we hauled it to Grants pass from North of Seattle and it had no problems pulling the hills. it was when we went down the other side that became a little dicey. The brakes were quite hot when we pulled in to Grants Pass to meet the buyer. we traded the 25 for a 22 and the trip back was so much better on the downgrades.