I'm with you Phil. I was able to get over 8 years of life out of the original Tacoma Tires that came on my 3400RL. I had just over 50,000 miles towed without incident on those tires. I too was cautious on tire, bearing, and overall coach maintenance. If the rig was stopped more than 2 days, the tires got covered. Air pressure was never below 80psi. Heck even after 8 years, the decals still looked nearly brand new. Maybe I was just lucky, or maybe Keystone and the industry have changed the quality of products and materials they are using today?? I like to think all the extra efforts of preventative maintenance paid off for me in the end. Heck, the only light bulb replaced on the entire coach in 8 years was the side marker light near the drivers door.