I run a twin axle car hauler trailer. Covered about 9,000 miles in the last 18 months. How many miles do you expect a trailer tire to last when properly inflated? I've seen estimates of 9-20,000 miles. Covered around 7,000 on my trailer. Is tread depth requirement the same as on a car?

 

Trailer tires usually age out before they need replacement. It’s best to replace every 5 years.

If they haven’t aged out, you can legally run them down to 2/32”.

 

I got 22,000 out of my Goodyear endurance ST trailer tires before replacing them. Could have gotten more milage out of them had I not had them over inflated for the load they had to carry so the center of the tire wore out first. I'll run the new ones 5 lbs. less and see how that goes.

 

Age has generally been my experience as well, 5-6 years tops. Usually best to replace the spare as well even if it never touched the road.

-Steve

 

I really doubt mine will age out. 20k miles seems to be the top end for miles covered. I'll have 15k easy before the end of this year.

 

Age is a relative number. 5 years if your live someplace like Arizona or southern Texas and the tires are constantly baked in the sun, I'm comfortable with 8 years up north with the tires kept out of the sun when stored. Heck my 72 cutlas has 25-year-old bias belted raised white letter tires on it and they are just now showing age cracks.

 

Over 10k on our Airstreams GY Endurance ST225/75R15E. Will be to 15k by summers end and I still expect them to age out first in 2027. Tread still looks great.

 

Agree on climate being a huge factor in expiration date of tires. We're in AZ and our tires are now 6, as long as they look sound I'm good with taking them a few hours from home but once we schedule a longer trip they're as good as gone. Definitely possible they'd last longer in less severe climates. As far as a mileage limit I think that also depends on how much they are inflated and how heavy the load is on each tire. I would think that's something only part timers or full timers ever deal with.

 

I replaced mine at about 25k on my Jayco travel trailer. They were only ~3 years old but getting worn down from all the travel we were doing the first few years with the camper. Went with Goodyear Endurance again.

 

As luck has it, got a nail right on the sidewall to tread area. My local trusted hole in the wall tire guy said not repairable. So one new tire…