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Old 10-04-2012, 04:16 PM   #1
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1964 22' Safari
Eagle River , Alaska
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Flat tires, Carlisle USA trails

I’ve had 2 flat tires in 3 days on '64 Safari. This is getting OLD fast! No idea if “coincidence”, tire issue, road condition or tire/rim/rim powder coating combination.
Opposite sides of trailer, 1st left one went on “good” US Highway 12 in Idaho… Second right one on grooved pavement on WA I-5, both at 64 MPH, Reese equalizer hitch/sway bars worked great.
Both were new (less than 1000 miles) Carlisle Tires USA trails ST225/75D15 tires mounted and balanced on new (now junk) 2600 pound rated, 15 x 6, 6 lug steel wheels (#: 11147).
Both times the tire suddenly deflated, bead unseated and tire rolled off rim, wasting tire and rim and messing with banana wrap. No one was hurt.
Wheels were powder coated forest green and tires mounted and balanced by “Les S” Tires.
I’m ordering another pair of new rims and centramatics this time. Would like to powder coat rims green again.
Whatcha think? Similar experiences??
Tire issue?? Rim powder coating? Poor Lower 48 road infrastructure conditions (#$@^)!!!
Traveled 10K last year with only typical “expected” Al-Can Highway flats on old rims & tires.
Don’t want to blame tire or rims if not the root cause.
Thanks
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Old 10-04-2012, 04:58 PM   #2
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My guess is very bad tires. ST tires might be correct on paper. But an awful lot of them seem to fail very early. When was the last time you had 2 blowouts in 1000 miles on a set of tires for your tow car? It goes the same places and the same speeds as the trailer. I run SUV tires on my trailer. If I was going to run ST tires I would run GYM.
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Old 10-04-2012, 05:36 PM   #3
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Wish I could edit my post above. I did not read your post carefully the first time. I thought the tires blew out. I have no idea why they would have deflated and come off the rims, but if the tires are otherwise still intact it probablyh does indicate some fault in the rims or fit or the mounting.
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Old 10-04-2012, 06:01 PM   #4
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Look very closely at the valve stems. They have been a quiet source of trouble for several years now. Basically since they started being made in China.
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Old 10-04-2012, 10:45 PM   #5
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Local Discount Tire warned me away from the D-rated Carlisle tires. They said the E-rated Carlisles were fine and I have put many thousand miles on the E-rated Carlisles with no problems.

OTOH, I have had miserable experience with Maxxis E-rated. Every Maxxis I have had (about 6) eventually suffers from a slipped belt.

I run my E-rated tires at 70# and never exceed 65 except briefly when passing.
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Old 10-04-2012, 10:46 PM   #6
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1964 22' Safari
Eagle River , Alaska
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Thanks

Thanks a lot. I suspect the tires.
Both were running at 64# pressure.

#1 valve stem is intact and "appears" good.

# 2 valve stem is...gone...somewhere on I-5. Never had a valve stem disappear before.

I've never had similar problem with any other tires on any other vehicle...and I've thrashed a few off road vehicles and tires (on Jeeps, not Airstreams).

Thanks
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Old 10-05-2012, 12:26 AM   #7
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1964 22' Safari
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What was the warnings away from the D-rated Carlisle tires?

Perhaps we've found my problem.

Thanks
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Old 10-05-2012, 06:36 AM   #8
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These will cure your tire problems and look good on your camper.
Yokohama*RY215
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Old 10-05-2012, 07:07 AM   #9
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1981 31' Excella II
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Get you some 235/75-15XL tires. They are a little taller and wider but they don't blow out like trailer tires. You trailer is light you could go with any car tire that is 225/75-15. I would recommend Michelin or BF Goodrich.

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Old 10-05-2012, 07:46 AM   #10
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I would also suggest a change to metal valve stems or this might be a good time for installation of a tire pressure monitoring system.
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Old 10-05-2012, 08:41 AM   #11
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Quote:
Originally Posted by Safari64 View Post
Thanks a lot. I suspect the tires.
Both were running at 64# pressure.

#1 valve stem is intact and "appears" good.

# 2 valve stem is...gone...somewhere on I-5. Never had a valve stem disappear before.

I've never had similar problem with any other tires on any other vehicle...and I've thrashed a few off road vehicles and tires (on Jeeps, not Airstreams).

Thanks
What does the manufacture recommend as correct tire pressure for your tire and trailer/weight combination? Not what the max printed on the tire is but recommended pressures. I would bet it is somewhat less than the 64lbs you inflate too.
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