Ok, this is just for informational purposes, and is not intended to rekindle the ST v. LT tire debate, or anything of the sort.
We just concluded a 900 mile round trip from San Antonio, Texas to Marfa, Texas. Our Airstream is a 2014 Sport 22FB, single axle, with the factory Goodyear Marathon tires.
I religiously checked the tire pressure, and kept it set at the factory recommended 65 lbs. I drove no faster than 60 mph. Really. We drove out on IH 10, and returned on state highway 90. This provided a mix of freeway driving, and state highway driving on lesser quality roads. The outside temperature ranged from 88 degrees to close to 100 degrees. the time between stops was usually about 2.5 hours.
At each stop, I measured the sidewall temperature with an infrared thermometer. The measurement was taken at the center point of the sidewall in 2-3 different places.
The range of readings I obtained was from 118 degrees to 127 degrees. Rarely did it exceed 130 degrees. The hub temperature, measured on the outside "dust cap" was typically around 108 degrees.
Given my understanding of the temperatures at which tire failure occurs, it seems that my readings are well within those ranges.
Again, this is for informational purposes only. Your results may vary.
We just concluded a 900 mile round trip from San Antonio, Texas to Marfa, Texas. Our Airstream is a 2014 Sport 22FB, single axle, with the factory Goodyear Marathon tires.
I religiously checked the tire pressure, and kept it set at the factory recommended 65 lbs. I drove no faster than 60 mph. Really. We drove out on IH 10, and returned on state highway 90. This provided a mix of freeway driving, and state highway driving on lesser quality roads. The outside temperature ranged from 88 degrees to close to 100 degrees. the time between stops was usually about 2.5 hours.
At each stop, I measured the sidewall temperature with an infrared thermometer. The measurement was taken at the center point of the sidewall in 2-3 different places.
The range of readings I obtained was from 118 degrees to 127 degrees. Rarely did it exceed 130 degrees. The hub temperature, measured on the outside "dust cap" was typically around 108 degrees.
Given my understanding of the temperatures at which tire failure occurs, it seems that my readings are well within those ranges.
Again, this is for informational purposes only. Your results may vary.
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