A year earlier I had bought a pair of trailer wheels and tires for my little utility trailer. Despite being new, I had the valve stems fail, and the tires constantly going flat. The cheapo rims were OK. I replaced the valve stems but the tires still wouldn't hold air. They also started to age check in a short time. SO, I replaced the tires with these. They have a higher load rating than the original and replacement tires. They cost as much as the cheapo rim and tire combo. HOWEVER, they hold air. No flats. They are higher pressure (old:60 PSI max, these are 90 PSI max). They run cooler on the highway too. These were worth the extra cost.