Does Higher Tire Pressure Shorten Tire Life?

The only reason, well other than not having water inside your tires, is.....the last time I had nitrogen it was nine months before I lost any tire pressure, vs, every two weeks with 72% nitrogen, it was free, it did eventually leak, it was convienant, another opinion.
That was three prii ago, if it were available locally for free, I wouldn't hesitate.

 

I understand that. However, I just wonder if there is an appreciable difference in 4 to 5 pounds of air to significantly add premature wear to suspension parts. Less absorption (higher pressure) will certainly reduce heat in the tire, prolonging it's wear. It will also reduce friction (control). Off to find a spring calculator for tires, a calculator I am sure exists because RACECAR.

 

Most salespersons will sell you anything they can, regardless of the benefits or applicability to your situation. It's buyer beware. We live in a sad world where on the Gospel is free, and there are even hucksters sell that.

 

It's Hookes Law.

See everyday life - Does the pressure inside a tire equal to its average ground pressure? - Physics Stack Exchange

Also, see https://www.longacreracing.com/articles/text/pressure.pdf for the racing perspective.

Too early to do the math.

 

In general, no. I think I said that earlier.
It actually depends on the construction of the specific tire but usually a couple of pounds won't make a significant difference.