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06-09-2009, 07:16 PM
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#1
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Rivet Master
2004 25' Classic
Prescott
, Arizona
Join Date: Jul 2008
Posts: 623
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Input Needed for this tire
OK, had the infamous Marathon BLOWOUT yesterday clipping along at a hefty 75 mph. Soooo, been surfing and trying to figure out just what to do. I guess the PO already had 2 of the Marathons go bad as I now have 1 Maxxis M8008, 1 Custom Trailer Plus, 1 Goodyear Marathon and the spare Goodyear Marathon!
Did a lot of surfing today and came up with the Pirelli Scorpion ATR 235/75R15 /D as a replacement tire for all 4. I have read all the pros and cons of using trailer tires compared to LT tires till it made my head spin. I tend to have a heavy foot when it come to cruising along and am leaning more towards the LT (which is what this Pirelli is) since it has a better speed rating
Any input?? Bob
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06-09-2009, 07:30 PM
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#2
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Just an old timer...
2004 22' Interstate
Tipton
, Iowa
Join Date: Mar 2003
Posts: 4,766
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I have come to believe that many "blowout" failures on trailers are the result of rubber valve stem failure. Every time I have a tire worked on or replaced, I insist on replacing the rubber valve stems with steel stems. I have had several valve stems at or near failure when I replaced them.
I don't think that the brand of tire, provided that it's a quality tire, is as important as replacing the valve stems with steel stems in blowout prevention. We were inundated for years with cheap defective Chinese rubber valve stems... and no one knows how many remain on shelves just waiting to fail on YOUR tire.
Roger
__________________
havin' to fix my broken Airstreams since 1987...
AIR 2053 Current: 2004 Airstream Interstate "B-Van" T1N DODGE Sprinter
Former Airstreams: 1953 Flying Cloud, 1957 Overlander, 1961 Bambi, 1970 Safari Special, 1978 Argosy Minuet, 1985 325 Moho, 1994 Limited 34' Two-door, 1994 B190 "B-Van"
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06-09-2009, 07:54 PM
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#3
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Rivet Master
2004 25' Classic
Prescott
, Arizona
Join Date: Jul 2008
Posts: 623
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Quote:
Originally Posted by 85MH325
I have come to believe that many "blowout" failures on trailers are the result of rubber valve stem failure. Every time I have a tire worked on or replaced, I insist on replacing the rubber valve stems with steel stems. I have had several valve stems at or near failure when I replaced them.
I don't think that the brand of tire, provided that it's a quality tire, is as important as replacing the valve stems with steel stems in blowout prevention. We were inundated for years with cheap defective Chinese rubber valve stems... and no one knows how many remain on shelves just waiting to fail on YOUR tire.
Roger
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Thanks for the input, but in this case it is not so since all four tires have steel stems. Now the spare does have a rubber one! I also check tire pressure every time before taking off. All 4 had 65 lbs. and I hardly ever have to add any air to bring them up. What is also weird, I had only traveled about 40 miles when it blew.
Bob
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06-09-2009, 08:37 PM
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#4
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Rivet Master
2005 25' Safari
Salem
, Oregon
Join Date: Mar 2006
Posts: 8,378
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Hi, 75 MPH on a 65 MPH rated trailer tire?
__________________
Bob 2005 Safari 25-B
"Le Petit Chateau Argent" Small Silver Castle
2000 Navigator / 2014 F-150 Eco-Boost / Equal-i-zer / P-3
YAMAHA 2400 / AIR #12144
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06-09-2009, 10:26 PM
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#5
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3 Rivet Member
1977 Argosy Minuet 6.0 Metre
Cape Coral
, Florida
Join Date: Oct 2005
Posts: 152
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You are running faster than the tires speed rating. If you want a higher speed rating than the typical 65 mph of most Special Trailer tires you'll need to go the the Cooper Special Trailer Plus which is speed rated in excess of 100 mph. They only come is size 225/75 R15.
__________________
flcracker
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06-09-2009, 10:30 PM
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#6
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3 Rivet Member
1977 Argosy Minuet 6.0 Metre
Cape Coral
, Florida
Join Date: Oct 2005
Posts: 152
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Make that Cooper Custom Trailer Plus.
__________________
flcracker
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06-10-2009, 06:01 AM
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#7
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Rivet Master
2004 25' Classic
Prescott
, Arizona
Join Date: Jul 2008
Posts: 623
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Quote:
Originally Posted by georgezink
Make that Cooper Custom Trailer Plus.
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The Cooper custom trailer plus tire would be ideal except that it is not available. It is more of a ghost tire! Believe me I have checked
Bob
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06-10-2009, 06:01 AM
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#8
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Rivet Master
1971 25' Tradewind
1993 34' Excella
Currently Looking...
Estancia
, New Mexico
Join Date: Feb 2005
Posts: 7,743
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I agree, your Marathons are not designed for that speed.
__________________
Sail on silver girl. Sail on by. Your time has come to shine.
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06-10-2009, 06:50 AM
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#9
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Rivet Master
, Minnesota
Join Date: Aug 2003
Posts: 7,721
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Quote:
Originally Posted by RLS
. . . I guess the PO already had 2 of the Marathons go bad as I now have 1 Maxxis M8008, 1 Custom Trailer Plus, 1 Goodyear Marathon and the spare Goodyear Marathon!
. . . Any input?? Bob
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My 'guess' is the PO might have hit a curb and damaged a couple of wheels. Have the wheels checked for run-out before you spend any more money on new tires. A bent rim can cause more heat and might have contributed to the blow-out.
Good note on the tire stems, Roger.
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06-10-2009, 08:05 AM
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#10
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Moderator
2015 25' FB Flying Cloud
2012 23' FB Flying Cloud
2005 25' Safari
Santa Rosa Beach
, Florida
Join Date: Jul 2006
Posts: 13,159
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I, also, tow our 25FB a little on the fast side. I generally stay in the 65 mph range, but as conditions permit, I occasionally ease up into the 75 mph range.
We bought our 2005 25FB new, and we have towed it nearly 50,000 miles. The OEM Goodyear Marathons suffered three blowouts in the 12 to 15,000 mile range. I replaced all of them with Maxxis E's. One of these had a tread separation and loss of pressure (non catastrophic) at about 22,000 of use. The three remaining Maxxis E's showed evidence of tread separation at about 28,000 miles. I replaced them with a whole new set of Maxxis E's.
Brian
__________________
SuEllyn & Brian McCabe
WBCCI #3628 -- AIR #14872 -- TAC #FL-7
2015 FC 25' FB (Lucy) with ProPride
2020 Silverado 2500 (Vivian)
2023 Rivian R1T (Opal)
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06-10-2009, 08:29 AM
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#11
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More than one rivet loose
Currently Looking...
Los Alamos
, New Mexico
Join Date: Feb 2006
Posts: 3,756
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Unless you inflated the tires over pressure, which is allowed, over 65 is asking for problems. Which you had. Switching to LT tires your best bet if you intend to tow above 65. Go up one load range. If you had C put LT D tires on. You may have to go with a lower profile to get to fit inside the wheel well.
__________________
Michelle TAC MT-0
Sarah, Snowball
Looking for a 1962 Flying Cloud
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06-10-2009, 08:47 AM
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#12
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Rivet Master
1978 28' Ambassador
Morada
, California
Join Date: Jan 2006
Posts: 1,584
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Never have heard of a 'blowout' being caused by a rubber valve stem...sure, you could have a 'leak' in the valve stem, and if you don't check your tires before some hi-speed interstate running, the leaky stem would lower the pressure, that could cause a 'blowout'...
Wow...If I'm running up close to the tire's rated 'speed'...I would sure be checking the tire pressures OFTEN!
As it is now, and I don't run much over 55 in California, I always lay a hand on all the tires whenever I stop just to see if one feels hotter than the others...just for peace of mind...
Don't know about you, but I've got too much invested back there to screw around with marginal tires, and a 'hook it and go' attitude before checking tire pressures and hitting the road...
I'm running some new, imported '7.00-15LT' bias ply trailer tires with the name 'Heartland' 'EXP Hghway' on them, load range D...my tire guy says he's used them for a couple of years without any major complaints...hope he's right! These tires actually handle quite well. I'm a believer in bias ply for better tracking, and fewer 'sway' characteristics ...I've only got about 500 miles on em' so far, but I'm leaving on a trip with some twisty, mountain roads this weekend, so they'll be getting another workout soon!
__________________
Ray & Pat; Morada, CA
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06-10-2009, 09:19 AM
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#13
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Just an old timer...
2004 22' Interstate
Tipton
, Iowa
Join Date: Mar 2003
Posts: 4,766
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Quote:
Originally Posted by Mexray
Never have heard of a 'blowout' being caused by a rubber valve stem...sure, you could have a 'leak' in the valve stem, and if you don't check your tires before some hi-speed interstate running, the leaky stem would lower the pressure, that could cause a 'blowout'...
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That's exactly what happens... the valve stem has a crack, lets air leak out, the tire overheats and either blows out or just comes apart as a high-speed flat. Unfortunately, there's usually not enough left of the tire to tell what actually occurred... and when they replace the tire, the tire buster just pulls the old stem and pitches it... so very few of them are diagnosed.
Bob... thanks for the info that you already had the metal stems installed... that does remove the stems from your incident.
Roger
__________________
havin' to fix my broken Airstreams since 1987...
AIR 2053 Current: 2004 Airstream Interstate "B-Van" T1N DODGE Sprinter
Former Airstreams: 1953 Flying Cloud, 1957 Overlander, 1961 Bambi, 1970 Safari Special, 1978 Argosy Minuet, 1985 325 Moho, 1994 Limited 34' Two-door, 1994 B190 "B-Van"
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06-10-2009, 09:59 AM
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#14
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Rivet Master
1984 31' Excella
Broken Arrow
, Oklahoma
Join Date: Jan 2005
Posts: 673
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Tire
I still have the ST tire that failed on I64. I had steel valve stems and checked the tire pressure prior to leaving the campground. The tire has steel belt protruding between to tread lugs in the senter of the tread area.
Not much chance of a valve failure there.
The other ST had the belts let go sitting at a campground. The tread became non-symetrical. Nope not a valve failure either.
Lets face it folks, you are getting what you pay for.
ST tires are a gamble. Walk away from the gaming table. Get tires with a Speed Rating of at least 99 MPH and your troubles will go away.
A number of us already have and our tire problems have gone away.
Beginner
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06-10-2009, 10:36 AM
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#15
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Rivet Master
2005 19' Safari
1968 24' Tradewind
Rural
, Delaware
Join Date: Jun 2005
Posts: 1,476
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Quote:
Originally Posted by 85MH325
That's exactly what happens... the valve stem has a crack, lets air leak out, the tire overheats and either blows out or just comes apart as a high-speed flat. Unfortunately, there's usually not enough left of the tire to tell what actually occurred... and when they replace the tire, the tire buster just pulls the old stem and pitches it... so very few of them are diagnosed.
Roger
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That's what happened to me, except for the blowout part (thanks to the PressurePro tire monitor), on a recent trip to Florida. I was doing under 55 MPH when the monitor alerted. I pulled over and confirmed the pressure drop, which had dropped to 36 PSI, with a tire gauge. After I got it changed, I noticed the tire had stopped deflating at 27 PSI. After inspecting the valve stem, I found it was cracked at the base, and audibly leaked when flexed. Easy fix... this time.
I plan to replace the 4 year old tires and get metal valve stems all around. After reading some of the horror stories on some of the tire threads, I'm still pondering which tires to buy. Since I'm only riding on two, I'd like them to be the best available.
BTW- Congrats on your Airstream, Chief.
__________________
2005 Bambi
1968 Trade Wind
2007 Ford F250 4x4 Crew
WDCU
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06-10-2009, 11:41 AM
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#16
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Rivet Master
2004 25' Classic
Prescott
, Arizona
Join Date: Jul 2008
Posts: 623
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Picture time!
This tire has a date of 16/06, Bob
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06-10-2009, 02:41 PM
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#17
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1 Rivet Member
2002 30' Classic
Currently Looking...
San Antonio
, Texas
Join Date: Jun 2009
Posts: 14
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I have blown out two sets of Goodyears on my trailer, I have now got Maxxis M8008 ST225/75R-15/E1's Had them for two years and no problems. But they have a speed limit of 65 mph as all trailer tires do, I run them at 85 psi.
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