I have a 2005 Silverado 3500 with 37,000 miles on him and I am planning a trip out west this year, about 6,000 miles towing my TT. Should I put new tires on before the trip? The truck is always garaged when not towing and is not exposed to the weather. The original tires look good with no checking but they are 8 years old.
Are you a gambler? Those tires are time bombs regardless of how they "look". It is time to spend some cash on new safe tires. My favorite tow rig tires are nitto dura grapplers. They are extremely stable, awesome in the rain, and wear like iron.