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03-23-2013, 04:22 PM
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#1
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Junior Member
Grand Design Owners Club
Join Date: Feb 2011
Location: Wilmington, NC
Posts: 22
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Montana High Country Axles
Thought I would throw this out.
We have a 2011 Keystone Montana High Country 343RL. Gross loaded weight max is 12,500. It comes with Dexter 5,300 lb axles and an estimated 18% tongue weight on the pin which gives you a glorious safety margin of about 200 pounds. Keystone -thanks for nothing!
Even though I tow at approx 11,500 pounds (I weighed it), at about 4,000 miles, the the left rear tire wore to a frazzle on the inside. I contacted Dexter Axle for advice (no point going to Keystone) and they upgraded my axle to their 6,000 lb model. Super nice folks to deal with.
At about 10,000 miles, I blew the left front tire on Interstate 10 at 65mph. (I can't say enough about tire pressure monitors. They saved my bacon.) Examination showed both front tires heavily worn on the inside indicating the axle had splayed out. I examined the tires on the rear upgraded axle and they were perfect (one had 6,000 mi, the other 10,000 mi). As I said, I don't overload my trailer so I have to conclude the standard 5,300 lb axle is inadequate. Once again Dexter came to my aid and is helping me take care of this problem.
I wonder if anyone else has a High Country with excessive tire ware issues?
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03-23-2013, 04:34 PM
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#2
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Member
Join Date: Feb 2013
Location: Morganton, NC
Posts: 50
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Why didn't they upgrade both axles when they upgraded one?
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03-23-2013, 04:51 PM
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#3
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Senior Member
Thor Owners Club Pond Piggies Club Outdoors RV Owners Club
Join Date: Jun 2000
Location: NE. Ohio USA
Posts: 5,973
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Can I ask where on the axle is the "weight rating"? I know I also have Dexter axles on my tt, which I'm curious as to how close mine are to the max. Was at a towing seminar two weeks ago where that was brought up. The person running the seminar didn't give a straight answer to a location.
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03-23-2013, 05:18 PM
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#4
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Senior Member
Tiffin Owners Club Pond Piggies Club Ford Super Duty Owner
Join Date: Dec 2004
Location: Mentor Ohio
Posts: 875
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The axle weight rating is on an aluminum tag on the axle.
Keystone was/obviously still is notorious for putting a heavy load on undersized axles.
My Everest had a 12,400 gvwr. and had the 5200lb axles with a 6 lug wheel.
Buyer beware.
__________________
2012 Tiffin Allegro 34TGA
2013 Jeep Wrangler Sport
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03-23-2013, 07:52 PM
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#5
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Senior Member
Join Date: Apr 2004
Posts: 2,244
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Are all your numbers estimates or actual scaled weights.
A 11500 lb trailer weight equates to approx 9400 lbs on the axles. (11500 minus 18 percent hitch weight = 9400 lbs)
Or 4700 lbs per axle load.
Or 2350 lbs per tire.
Blown tire issues sounds like the trailer has 15" ST225/75-15 D tires on it. I would have the suspension check and upgrade to 16" wheels and LT E tires.
__________________
'03 Dodge 2500 Cummins HO 3.73 NV5600 Jacobs
'98 3500 DRW 454 4x4 4.10 crew cab
'97 Park Avanue RK 28' 2 slides
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03-24-2013, 06:58 AM
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#6
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Junior Member
Grand Design Owners Club
Join Date: Feb 2011
Location: Wilmington, NC
Posts: 22
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Follow up on axles
My weights were from a truck scale - not estimates.
My 343 has TowMax ST235/80R16 tires on aluminum wheels.
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03-27-2013, 05:50 AM
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#7
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Senior Member
Join Date: Oct 2011
Posts: 1,312
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I have always though that 5k and 6k axles have same thickness tubes. They get thicker on 7K and and 8K axles.
I had 15 tires on 5k axles before and had all kinds of tire and springs problems until I went to LT's. Found an axle alignment problem with the tire wear problem. All my ST tires were junk. My LT tires lasted over 6 years until I traded.
__________________
Barbara and Laurent, Hartland Big Country 3500RL. 39 ft long and 15500 GVW.
2005 Ford F250 SD, XL F250 4x4, Long Box, 6.0L Diesel, 6 Speed Stick, Hypertech Max Energy for Fuel mileage of 21 MPusG empty, 12.6 MPusG pulling the BC. ScangaugeII for display..
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03-28-2013, 11:16 AM
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#8
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Junior Member
Grand Design Owners Club
Join Date: Feb 2011
Location: Wilmington, NC
Posts: 22
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Axle wall thickness
According to Dexter, standard 5,300 lb axles have a wall thickness of 3/16". Their 6,000lb axle is the same diameter outside, but the wall thickness is 1/4".
I'm outside my comfort zone here so I just believe what I see and most of what I'm told.
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04-06-2013, 09:52 AM
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#9
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Senior Member
Join Date: Aug 2004
Location: Wherever we are
Posts: 4,288
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I believe the tires are also part of the problem--check country of origin, probably Chinese?
Change other axle and go to LT tires in highest load rating the wheel will take.
Joe
__________________
'16 40QBH Phaeton
'21 Sahara HA toad
'15 38RSSA Mobile Suites--traded
'05 36TK3 Mobile Suites--retired but not forgotten
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