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Old 05-06-2009, 01:52 PM   #85
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Good question. First, I assume that the Centramatics work based soley on years of use on 18-wheelers and then, assuming that we don't pull our wheels and balance them as regularly as we do our passenger vehicles I have every confidence that they will protect the running gear of our Aistreams. I thought it an inexpensive investment and an easy installation process based on the aforementioned assumptions. Of course, we all know what happens when we assume anything; however, that's my story and I'm sticking with it . Best regards and good luck.
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Old 05-06-2009, 06:50 PM   #86
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Thanks again.

So, you are a heavy user of tires through your experience with 18-wheelers. In fact, your experience must envelope many millions of miles.

As one with intimate knowledge of tire performance, why did you choose the Marathons for your Airstream?
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Old 05-06-2009, 07:04 PM   #87
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Hahahaha. Millions of miles...NOT. The Centramatics manufacturing plant just happened to be close to my Texas home when I discovered what they were all about through my local Airstream dealer. I made the trip to the plant and found the tractor-trailer drivers lined up for installations. As for the Good Year Marathons, mine came on my trailer from the Airstream plant. Hope all is well up north and that Spring has sprung as they say.
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Old 05-06-2009, 07:38 PM   #88
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Aaaaah! That IS funny! I made an assumptive leap into the abyss of dumb, there. But thanks all the same for your comments.

Yes, spring is here, we're already cut the lawn a couple of times. The trailer is getting set up to live in again in another week! Summer will be here in a blink of the eye...!
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Old 04-25-2010, 11:20 AM   #89
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450,000 miles on my gyms....

time 4 a rubber update.

the last set of gyms were mounted less than 4 years ago.

((see post #22/24 above and #69/70/71 also in this thread.

and have ~45,000 miles PER tire now.

early on 1 tire tread vanished quickly and was changed

and there have been 2 nail/screw episodes (one patched/plugged the other replaced)

but otherwise NO PROBLEMS with the CHINESE made gyms.

here's a pic of 1 of the oldest tires which still looks good.

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and a close up of another one, MEASURED there is 3-4 mm tread remaining....

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not bad and especially with the usage.

(zoom in for closer looks)

cheers
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Old 04-25-2010, 11:36 AM   #90
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since a couple of the tires were UPdated later, out of sequence they have a tad MORE tread left...

here's a shot of one, maybe a bit more wear on the INNER side,


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but really pretty evenly used.

a closer look shows the wear/depth bar, (zoom for hi'R def)

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and measured, these 2 tires have 5-6 mm of tread remaining all around.

these tires could continue IN service, probably another 10-15k

i keep 2 spares mounted on identical wheels, so once ALL 8 are off the 2 best/youngest will be used as spares...
_____________

so that's 15 gyms over the last 5 years...

7 canadian made (famous for failures) at over 180,000 miles

8 chinese made (excellent tires imo) at over 270,000 miles

so ~450,000 cumulative miles of PROBLEM FREE duty at the typical towing speed...

72mph+ and occasionally faster...

cheers
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Old 04-25-2010, 11:45 AM   #91
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NEW TIRES going ON...

with such great service from these imported gyms

and the RECENT move of gym production BACK 2 the usa...

the choice for NEW tires was easy.

so 6 fresh rollers were delivered mid week...

with a production date of 25-30 weeks ago.

here's a tread shot of one...

(note the slightly diagonal wear bar)

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and herez t2o more...

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nothing like DEEP FRESH tread for the SPRING ROLLers...

or the smell of vulcanized rubber rising from the morning dew...

(again ZOOM for a closer peak and to compare TREAD patterns to the last set)


cheers
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Old 04-25-2010, 11:52 AM   #92
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Hi Joe,
I also have had no issues with the Marathons. My old set were seven years old with tread left when I changed them. Made in Canada. Picked up a 4 inch bolt in one so I changed them all.
That was last spring and I got one week old tires made in USA. Near Nashville they said.
Al
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Old 04-25-2010, 12:13 PM   #93
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strapping on new rubber...

ok with new rubber in the truck bed and trailer in tow...

it was off to the local tire shop for wheel mounting, balance and trailer install x6.

so following the factory recommended and a/s service center USED jacking points ...

and SAME approach to lifting note here (see post #42) ...

http://www.airforums.com/forums/f457...tml#post428907

the mightty stream was LEVITATED.

after raising the tongue jack a bit...

1 street side jack was placed under the rear JACK plate/point...

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1 curb side jack was placed under the rear JACK plate/point...

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and lifting began

the shop then added 2 more jacks under the axle mounting plates between axles 2 n 3...

so once the stream was FLOATING, all 6 wheels were removed.

cheers
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Old 04-25-2010, 12:20 PM   #94
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here's a couple of shots of the 34 airborn...

streetside

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curbside

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i would have preferred jack stands 4 back up of the jacks,

but since yours truly wasn't UNDER the stream, this was ok.

(zoom for closer peaks)

cheers
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Old 04-25-2010, 12:28 PM   #95
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Quote:
Originally Posted by BigAl View Post
...I also have had no issues with the Marathons...
hiya big al, hope it's thawin' out up yonder and life is good.

imo and in practice,

the keys to living with rv tires are proper inflation, NOT overloading, regular rotation, balance and USAGE.

checking TEMPS and a tpms ADD to the feedback and seem to be useful for monitoring changes...

NEVER roll on an UNDER inflated tire, even for a few miles.

and always MAX out inflation if the units gonna be idle/parked for weeks.

and have some respect for curbs, holes, HEAT and other assaults that trailer tires are subject 2.
_________

as mentioned above the CHOICE for replacements was easy,

and for those NOT well versed in the subtle tread pattern differences in the pics above...

here's a score card for the new tires...

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cheers
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Old 04-25-2010, 12:51 PM   #96
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Those of us who tow a lot in hot weather have long ago switched to LT or E rated tires.
As for 2air and others who love their Marathons here is an open invitation to tour southern Arizona in July and see how long they last.
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Old 04-25-2010, 12:52 PM   #97
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the new tires were "match mounted" to the alcoa wheels...

and road force balanced.

using this approach, they required very little lead at the wheel lip...

these 2 pics show the outcomes...

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and here's another one ON the trailer with hubcap and tpms on...

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cheers
2air'
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Old 04-25-2010, 12:56 PM   #98
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handn

i've been to az in heat, and nevada and texas and the midwest and so on.

80,000 miles in the last 5 years towing in all weather and on/off roads.
___________

NO place in this thread is the term 'love' used in reference to tires, ANY tires.

it's about providing details related their performance only.

and this is NOT the bitchin' about st tire thread.

there are 100s of threads for that, try using ANY 1 of those.

there are also threads on going to ALTERNATE wheel/tire setups.

use 1 of those threads if there's a need to promote alternatives.

while SOME folks have switched, CLEARLY most haven't.

and even those selecting alternatives have had issues...

cheers
2air'
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