The amount of miles that trailer tires last is around 10,000 miles to 12,000 miles.
Some trailer tires may last longer than others depending on how much weight you're hauling on your trailer and how fast you tow the trailer.
The more weight you're hauling on your trailer the faster your trailer tires are likely to wear out.
The life of a trailer tire can also depend on the quality of the tire, the roads and terrain they travel on and the load and weight which is being carried.
Some people get 30,000 to 40,000 miles out of trailer tires if they do a lot of towing and others who don't tow as often replace tires well before 10,000 miles to 12,000 miles due to age of the tire.
Each tire manufacturer will likely have different recommendations on the service life of a particular type of tire, but statistics suggest the average life of a trailer tire is about five years under normal use and maintenance conditions, and that tire replacement should be considered after three years regardless of mileage.
As tires age the tires rubber breaks down and begins to crack and can come apart on the highway.
If your trailer tires or vehicle tires have severe cracks especially in the sidewall they should be replaced.