On tire pressures, the Yaris, and the Prius

[Hershey]

achieving 40 + miles per gallon with tires set at 35 > 36 p.s.i.. Not worth premature wear of suspension .

[Kal-El]

Originally Posted by Hershey

achieving 40 + miles per gallon with tires set at 35 > 36 p.s.i.. Not worth premature wear of suspension .

35-36 psi is nothing. That's not going to cause premature wear. 45+ may start to. Some (like Bailout) are running 60 psi. That is going to cause some negative issues but he is aware of that.

The common 32 recommendation is designed as a balance for all considerations.
Ride, handling, efficiency, safety, wear, ect. Different pressures create different negatives and positives for each one individually.

[127.0.0.1]

Originally Posted by Kal-El

35-36 psi is nothing. That's not going to cause premature wear. 45+ may start to. Some (like Bailout) are running 60 psi. That is going to cause some negative issues but he is aware of that.

The common 32 recommendation is designed as a balance for all considerations.
Ride, handling, efficiency, safety, wear, ect. Different pressures create different negatives and positives for each one individually.

there is a huge difference between 35 and 40 impact-wise, you don't have
to go all the way to 45 to change the suspension game entirely

[sbergman27]

Originally Posted by Kal-El

35-36 psi is nothing. That's not going to cause premature wear. 45+ may start to.

It's not so much wear that I'm concerned about. It's impact damage. Peak impact forces increase dramatically with tire pressure. A strut mount is going to last pretty much forever. It's not going to wear. It can, however, *tear* if subjected to a high enough peak force from impact. The tires are an integral part of the suspension system. Their job entails far more than to just minimize rolling resistance.