I actually run 80 psi w/o any probs..however, I am replacing all 6 tires this spring. The last owner didn't believe in balancing the tires. I balanced the front last year..it helped a lot. How I arrived at the 80 was by using the tire manufacturers chart for weight..80 psi did the job that was required however, I have been told not to go below 90 which makes me wonder why it was listed in the chart.
My cab is air suspended and i put in a set of commodore seats from national that are, quite frankly, awesome. I did a run of 11 hours and was still fresh as a daisy...and I have quite a damaged spine in 2 areas.
I looks at Bose but they wouldn't fit in my cab.
New shocks on the front but no wheel alignment..i will when I put new tires on..but I didn't have an pulling or handling issues.
2010 Northwood Arctic Fox 29-5T