5yr old tires with lots of tread left.. replace anyways?

I bought this used trailer online... I thought it would make the two hour trip home.. I knew the tires were bad and was going to replace them when I got back. I made it an hour and it blew apart
I never had a flat in 30 years. I always kept a jack and tools in the truck just in case.... this is the one time I really needed them.

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Get a good name tire, load range E’s, set pressure to 80psi and you’re good. I put 2000+ miles a year on the 290 with tri-axle, no issues for past 3 years.

Same gig with my old 268, tandem axle trailer for 10 years 2000+ miles/year. No issues.

Big boats broke down along the road are no fun so don’t take chances.

Another thing to watch for is junk steel rims. I actually broke 2 rims on my old 268. Fixed that by going to fully machined aluminum rims.
 

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Purchased a boat with three year old tires. Owner lived about 15 minutes from the launch site. I knew there may be trouble on the way home so I checked air pressure, brought good jacking equipment, and a friend to follow and watch the tires. On way home about 75 miles into the trip, first tire blew out. About 25 later, the second tire separated.

Carlisle tires are Chinese made and are not passenger car rated.

Your call. I would replace them without hesitation.
I only replace my trailer tires on my boats and camper with Goodyear Endurance tires of one load range higher than spec with steel heavy duty valve stems - blowouts suck and can ruin your boat, trailer, and a fishing trip. Call me paranoid.

My experience exactly - with the jacking equipment and more than one blown tires, and replacing all with one higher load range. Carried two mounted spares after that. How hot it is when you're towing is a factor, too.
 
I always follow the info plate recommendations found on the trailer for tire size and inflation. It's ok to go up in weight rating but not size. Inflation info found on the tire is the max inflation number and not the recommended pressure. Replacement after 5 years is always recommended. Don't rely on the date of install but use the date of manufacture found on the tire. Tires age while sitting on the shelf of a warehouse so insist on the newest dates available. I keep the usual tools needed in the truck at all times. I also keep a wood "jack" in the truck. It is great for dual axle trailers. I made mine from 2 pieces of 2 x 10 glued and screwed on top of one another. Cut a 45 degree angle on one end as a ramp. If you get a flat put the wood jack under the good tire by pulling the trailer on to it. It raises the bad tire off the ground enough to remove and replace the wheel with out using a traditional jack. Great in places that are not flat or the ground is too soft for a jack.

I also keep my tires covered when the trailer is not in use. Trailer tires have more UV inhibitors built into them than car tires but it seems to help them reach their max life expectancy with the extra protection from the sun.
 
I made mine from 2 pieces of 2 x 10 glued and screwed on top of one another. Cut a 45 degree angle on one end as a ramp. If you get a flat put the wood jack under the good tire by pulling the trailer on to it. It raises the bad tire off the ground enough to remove and replace the wheel with out using a traditional jack. Great in places that are not flat or the ground is too soft for a jack.

Great idea!
 
I try to replace all 6 tires every 5 years. If I feel like I'm lucky, I'll go six. I usually have one tire go about every three years. Usually it's the one tire that got missed in rotation or age. So I try to replace all 6 every 5 years. The last one took out the fender, license and I didn't have anything to bed the fender back. I removed the bad tire and limped about a mile to a tire shop. They bent it back and 11 miles later, I had a bearing go. Replaced all six bearings since they were 14 years old. All were outside of tolerance, so we just did them. I learned NOT to grease them until you see the new grease, that has a tendency to mangle the seal. So just a few squirts of grease on each trip now. I still feel like 14 years is pretty good on the bearings and hubs, but maybe others with big boats tow more than I do? Usually, 1,000 miles a season or slightly more?
 

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