The only reason to reduce tire pressure would be to reduce "harshness". In other words, running the TM on tires inflated to 80 psi is like running them on solid wheels, and may shake the TM more than you like. Think screws popping out, cabinets opening and spilling contents - that kind of stuff.
Please read tireman9's comments on reducing inflation, recently posted in the Tires Tires Tires forum. I believe he says that reducing pressure reduces the load-carrying capacity of a tire, bit if you reduce to 65 psi, you will still have the capacity of Load Range D tire, which is plenty, and less shaking.
Your post will be moved to the Tires forum shortly.
Bill
|