I picked up a spare at Tractor Supply. It is a spare to get me home. I has been used once to get me home from South Dakota and one time to finish out the few miles to home.
When I changed my seven year old China bombs after more than 18,000 miles because of age, I went to a D rated tire but the spare is the old C rated.
It is the spare. It is not going to be on for more than a couple of days. I do not intend to run it for an extended period of time.
I have never had a tire blow up or come apart. All my flats, both truck and trailer have been nails or other road hazards. Road hazards do not care how much your tires cost.
The advantage of a more expensive tires is they have the manufacturer's reputation behind them and often a better warranty.
Of course I have a 25 ft. TT, all bets are off when you start talking bout those large behemoths.
Twenty six foot 2010 Dutchmen Lite pulled with a 2011 EcoBoost F-150 4x4.
Just right for Grandpa, Grandma and the dog.