The unused new spare tire on the side of my horse trailer blew up yesterday. It has been really hot (100+ for 2 weeks) up to 109, but it shouldn’t blow up, should it? I took photos. What else should I do? Should I replace the 4 tires on the trailer (same brand, 1000 miles on them).

How old was it? If it was a LT tire, they can hold pressures of 60 psi or more. Couple that with a sun-baked spare tire that was over 10 years old and I can see this happening. Did it look like it had small cracks in it before it blew? If the other tires are also more than 10 years old and/or show …

It was new 7/08. It has max psi of 80 and I had 55# in it. It didn’t have any visible cracks (and neither do the ones on the ground).

Yeah, but what is the age of the tires? Especially the spare? Look on the sidewall for the manufacturing date. Check this page to determine the age of the tires: http://www.tirerack.com/tires/tiretech/techpage.jsp?techid=11&

Was there an actual explosion, or did it just finally split open because of sun damage? This is what happens to old tires that sit in the sun too long. Has it been exposed to sunlight every day since you bought it? The tires on the trailer are under a fender, right? If so, they get less than hal…

Oh, I assumed a new tire would be “new”. I read your referal. I just got in from chores and it’s dark outside. I took a flashlight and went out to the trailer but couldn’t find/read the small print. I’ll try it again tomorrow morning in the daylight. Thanks for the info.

It exploded. The trailer is normally parked under a tree but it had been parked on the asphalt in front of the barn for the past 2 really hot weeks, with tire fully exposed on south side. KaBoom. Thanks to you guys and Google, I’m learning alot about tires. After researching, I found that my tire w…

Sounds like a simple defective tire to me…An 8-ply rated tire should NEVER “blow up” unless it was damaged (bruise break) or defective… I have an old Dodge water truck I keep down in Mexico… It has six twenty year old nylon cord 10 ply tires on it and they are all doing fine…It’s 110 degrees down t…

Keeping tires properly inflated is important because an under-inflated tire runs hotter and is much more prone to blowing out when used. The spare blowing out, especially when under-inflated, tells me that tire had a defect. Do the others also have a defect? Chinese products are not know for good qu…

Running tires with less pressure than specified leads to extreme flexing of the sidewalls of the tire. This flexing causes a buildup of heat within the sidewalls, which are the weakest part of the tire. The heat leads to degradation of the tire’s cords, and a weakening of its structural integrity…

Spare tire blew up

Maintenance/Repairs

art1966 August 29, 2022, 10:53am 17

TheWonderful90s might be interested in this example of an exploding tread that was discussed here a couple of years ago:

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Spare tire blew up

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