They are not on the crown, but they do feel harder at 65. They are rated at 80psi. I do air down off road.
Sent from my iPhone using Tapatalk
CNUT, lets do some math. I think you are WAY over inflated, and here's why:
Based on
Tire Rack.com and your comment about 80PSI, I assume you are running 32" x 16" rim LT235/85R16 120/116Q E tires. Those tires are capable of holding 3042 lbs EACH, at 80 PSI. That works out to a 12,168 lbs vehicle load. Since 65psi is 81% of 80psi (max pressure), we can assume that at 65psi, your load capacity is 9,856 lbs.
This begs the question, do you carry a spare Montero in the back of your Montero? Why on earth are you running so hard? Are you carrying 4,000 lbs of cement block in the back of your Monty?
At 35PSI, your load capacity is 5,353 lbs. According to Edmunds, the curb weight of a 3rd Gen Monty is about 4,800 lbs. This means at 35psi you could carry another 500 lbs of gear and people, on the freeway, without any issues.
Just curious, what do you air down on the trail? I run 18psi mostly. I air up to 32psi for the street, and 35-38psi on the freeway when fully loaded for a camping trip, with lots of gear onboard. Even at 18psi, I am only marginally increasing my contact patch: