Too much tire pressure?

[Surfsmith]

Tires state 50 psi when cold. Traveling across the midwest yesterday with temps in the high 90s the tire pressures were going up to 60-64 psi. Is there a percentage increase that once achieved one should let some air out. I did slow down about 10 mph. Oil lubed hubs never got too hot to hold, in fact the tires always felt hotter than the hubs.

thanks

[RED675]

Don't let any air out, always follow the cold psi recommendation. Pressure gain will not cause a tire failure, but too little will by overheating the tire.

[srock]

That is normal

[Surfsmith]

Thanks, I was concerned because the the Jeep tires were only going up about 6 psi.

[srock]

I watch the on-board temp sensor on my wife's Acrua climb from 31-32 psi to 42+ after about 10 miles of driving. I touch the hubs at fuel stops or when I get out of the tow rig to check on the bearings.

[shag]

Always follow tire recommended cold inflation pressure. When a tire is made, they take that into account. And I second the fact that low air pressure causes even more heat/failure. The only exception to this would be if your trailer axles are not true to the frame. In other words, as you travel, there would be a constant stressor on the tire, causing excessive wear and heat build up. And correct me if I'm wrong, but it usually takes more air than required when they mount a tire, so I would not worry about a 10-15 psi increase.
My .02