Have to pull the trigger on 6 new tires for my bus, the rears are 20 years old and the fronts are 10 years old.
My data plate says to run 16ply at 120PSI, for my axle rating of 13,220LBS on the front and 19,000LBS on the rear. Just at 32K GVWR. My last weight in was 25,780LBS gross 10,300LBS on the front and 15,480LBS on the rear. Thats on the light side, if move into the bus I will be adding a few 1000lbs I bet.
One tire shop wants to sell me 16ply Hercules H703 open for the drives and Dyna RA200 for the steer.
2nd place says 14ply is more then good enough and wants to sell me Milestar BS627 for the steers and Milestar BD757 closed for the drives.
Price differences are about 350/450 cheaper for the milestar's.
The bus already rides way to rough for my liking and it has 14ply's on the front now and I run at 90-100PSI. The rears on there now are open shoulder.
Would doing 16ply at the suggested PSI of 120 make my ride a lot worse, or would it improve it? Maybe the tires on there now are hard and brittle.
What would you guys suggest?