trailer blows inside tires

Don't know, unless something is rubbing against the tires. I have Hendrickson inflation system on my super-b train. In just over a year and a half I have picked up 7 nails or screws on various tires that resulted in air leaks, but the system was able to stay on top of them. ZERO blow outs. All tires are still originals, but I only run 80 psi on the tri-axle and 85 psi on the tandems.

 

Are you pairing up brand new tires next to comparatively worn tires? If so, I'd wager that's part of your problem... if you have one tire at, say, 19/32nds next to one at 4/32nds, which one do you think is carrying a disproportionate share of the load?

 

Would look closely for any shiny spots on the trailer that may be making contact with the tires.

 

I'd first do what sdanel said and make sure that the tires are not rubbing on anything. Low ride height could cause them to rub. Get yourself a large carpenters square and check that your dual are matched. If the inner tire has a larger diameter, it carries more load. You want less than 1/4" difference and the larger tires should be on the outside. Has the trailer ever been severely overloaded? If the axles are bowed, it could put more weight on the inside tires.

 

IF its not the same position always or repeatedly blowing out. Probably damaging tire going down road, nails or screws. I have had a 1 inch diameter 8 inch long bolt in my tire.
Do you run caps on your trailer. I was running caps for a couple years and my tires would heat up and the caps would seperate. With new tires I don't have that problem. My tires are 19.5's on a spread axle. My drives I run caps on drives with no problems at all.

 

i know it's hard to see but look at the shiny black line around the tire right by the tread.....

this is the reason..... on this trailer the leveling valve works but after being loaded when you supply air the 1st time it takes 5-8 mins for it to come up
if you move it before it has come up it rubs.... do it a few time and guess what happens
and ya this trailer has auto tire inflation............... it's something you my want to check for

 

Keeping tires at anything lower then 100 is just wasting fuel. If your tires are rated at 105 max or more, you will be put out of service for 12 flat tires at 80 psi in a level 1 inspection. I keep all my tires at 120 regardless of max pressure stamp on sidewall. harder tire means less flexing = less heat to cause a blowout, and also much better rolling resistance. My steer tires are BFG ST244's rated at 105, but I keep em at 125 due to heavy steer most of the time. And no, I dont have any center wear issues...

 

No-one is going to put you out of service for having trailer tires at 80 psi. You're just wearing your tires out prematurely and beating the crap out of your truck with over inflated tires. 75 psi is enough for any truck not exceeding 80,000 on trailer tandems and drives with load range E tires. Google tire load, inflation charts for 22.5 tires.

 

The DOT and others need to familiarize themselves with weight vs tire inflation charts put out by the tire manufacturers themselves. Don't ask why or what. Check out the charts for yourselves. It might even be a good idea to carry your tire makers' charts.