towing 5,000 pounds after hard right turn d25s 0-35 was 4.7 seconds and d35s was 6.2 seconds my gmc sierra 2500 was 4.5 seconds towing 5,000 pounds the d35 had a hard time maintaining 40 mph the d25 did okay braking the d35 lacked anti lock so i had to modulate the brakes 120 feet 45-0 d25 didnt have the right brakes for the job 140 feet 45-0 new towing rating for d35 9,500 pounds