Put foams on it. Asphalt foam is rated by hardness. You will see numbers like 37 or 45 with higher numbers being a harder tire. Try 37's all the way around. Just be sure to get 37 fronts and 37 rears. While they have the same number, front and rear foam is different. If you want even more life, try 42 or 45.
Sean. Certified speed crazed mowron.
Team Shepherd USA