I think I already posted about our flat recently, but wanted to add, I am replacing all 4 tires because of age (5 1/2 years old). If the tires were only say perhaps less than 3 years old, I likely would have just put one new one.
I am keeping the 3 other used tires, I will make at least one into a second spare for the trailer when we are venturing further from home. We really did not like not having a spare after putting the spare on. It was the hottest day of year 105-107, traveling in the hot part of the day.
