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01-16-2019, 05:28 PM
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#21
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Montana Master
Join Date: Apr 2017
Location: 1000 oaks
Posts: 953
M.O.C. #19630
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Im not really doubting the bent axle reports but, can you possibly imagine what kind of torque or "moment" in engineering terms it takes to bend a three inch metal tube three feet away from the fulcrum point pressing on a point only 10-12" away from the other side of the fulcrum point.
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2011 2955RL Gen-Y Executive Kingpin
2022 GMC 2500HD Duramax/Alison
4X4 Crew Cab/Standard bed.
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01-17-2019, 06:45 AM
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#22
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Established Member
Join Date: Sep 2016
Location: Seattle WA
Posts: 27
M.O.C. #19048
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Had wear on curbside tire after mobile service checked and repacked the bearings. Didn't watch the entire procedure so don't know if they torqued after. could not tell if there was abnormal wear on opposite tire but took it to CW and had alignment checked. Within specs so went back on the road. No further problems so can only conclude that not being properly torqued can cause this type of abnormal wear although I would expect it to create a wobble or wavy pattern.
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Bill and Lana
2011 Montana 3400RL
2014 Ford 250 Super Duty
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01-17-2019, 07:12 AM
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#23
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Established Member
Join Date: Apr 2016
Location: Huntington Beach
Posts: 18
M.O.C. #18450
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I'm having the same tire wear problem on my 2008 2955 RL. Already replaced one axle and now the other axle shows tire wear problems. Repair shop couldn't find any problem with the axle. I will go back and have the leaf springs checked to see if they can support those 6k axles. Thanks to all!
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01-17-2019, 08:19 AM
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#24
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Montana Master
Join Date: Dec 2017
Location: Mountain Home
Posts: 839
M.O.C. #20949
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I’d venture that some of the tire wear issues folks are having is caused by...
.. wrong air pressure for load
.. suspension hasn’t been routinely lubed...
***If it’s not a wet volt system it needs to be and I’d correct that before anything else
.. wheel bearing issue on tire with wear.. either too loose and or failing
.. broken spring or worn out leaf spring hangers due to lack of lubrication or extreme angle during backing
... yellow plates will not be on all suspension systems.will depend on year of the RV and whether it has the “correct track” installed.. not all do... mine doesn’t
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01-18-2019, 05:46 AM
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#25
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Montana Fan
Join Date: Oct 2017
Location: Riverview
Posts: 178
M.O.C. #20713
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Our brand new 2016 3160RL had little to NO grease in all of the zerk fittings. So now before every trip, hubby pumps grease in all zerk fittings & greases the wheel bearings. Two yr old tires seem to be wearing evenly.
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01-26-2019, 09:35 AM
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#26
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Established Member
Join Date: Apr 2016
Location: Huntington Beach
Posts: 18
M.O.C. #18450
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Just curious. Have same problem but can't convince any service advisor that leaf springs could be the issue. Already had one axle replaced 3 years ago. Trying again this week. I found leaf springs at e-trailer with 6 leafs. Existing ones on trailer have 5. How did you know how old springs were for 5k axle?
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01-26-2019, 10:14 AM
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#27
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Montana Master
Join Date: Jun 2018
Location: Folsom, California
Posts: 552
M.O.C. #21903
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Quote:
Originally Posted by MrMeeks
Just curious. Have same problem but can't convince any service advisor that leaf springs could be the issue. Already had one axle replaced 3 years ago. Trying again this week. I found leaf springs at e-trailer with 6 leafs. Existing ones on trailer have 5. How did you know how old springs were for 5k axle?
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If you look at my post #7 above, it explains why the tires wear on the inside due to weak or under rated springs. I bought the 3,000 lb springs from Etrailer after I posed a question on their website. One of their technicians suggested the heavier springs. Number of leafs indicate the weight rating. 3,000 pound one had one extra leaf.
It definitely was NOT the axle. While I had the them off the ground with no load, they had a slight upward bow just like they're supposed to have.
On 2 occasions on prior trips, the factory original 2,500 pound springs actually broke close to the shackle. Each time we were able to get to a shop to replace the spring...had to go with 2,500 pound ones since all 4 needed to be the same. I now have 2 almost new springs in my "spare parts bin" since they were replaced during the upgrade.
Note that all 4 of my tires wore heavily on the inside edge. The left side was perfectly aligned, I only had to align the right side.
The heavier springs absolutely solved the inside edge wearing problem.
__________________
'05 F250 6.0 Bullet Proofed - Sold
'17 F350 6.7 Lariet
'02 Montana 3280RL Upgraded a bunch.
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01-26-2019, 10:40 AM
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#28
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Montana Master
Join Date: Jan 2009
Location: Centerville
Posts: 1,350
M.O.C. #9051
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Quote:
Originally Posted by Hblick48
If you look at my post #7 above, it explains why the tires wear on the inside due to weak or under rated springs. I bought the 3,000 lb springs from Etrailer after I posed a question on their website. One of their technicians suggested the heavier springs. Number of leafs indicate the weight rating. 3,000 pound one had one extra leaf.
It definitely was NOT the axle. While I had the them off the ground with no load, they had a slight upward bow just like they're supposed to have.
On 2 occasions on prior trips, the factory original 2,500 pound springs actually broke close to the shackle. Each time we were able to get to a shop to replace the spring...had to go with 2,500 pound ones since all 4 needed to be the same. I now have 2 almost new springs in my "spare parts bin" since they were replaced during the upgrade.
Note that all 4 of my tires wore heavily on the inside edge. The left side was perfectly aligned, I only had to align the right side.
The heavier springs absolutely solved the inside edge wearing problem.
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I agree, although a friends brand new Montana fifth wheel with the 7K axles had terrible outside tire wear with very little miles. My advice to him was get it aligned, he did, and the alignment was bad from the factory. He replaced the worn tires with some new Sailuns and no further tire issues, this has been three years so far . It can be just alignment, but as you pointed out, it can be other issues .
If shackles , leafs etc are looking okay, alignment would be my first check.
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01-26-2019, 10:49 AM
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#29
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Montana Master
Join Date: Jun 2018
Location: Folsom, California
Posts: 552
M.O.C. #21903
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Quote:
Originally Posted by PSFORD99
I agree, although a friends brand new Montana fifth wheel with the 7K axles had terrible outside tire wear with very little miles. My advice to him was get it aligned, he did, and the alignment was bad from the factory. He replaced the worn tires with some new Sailuns and no further tire issues, this has been three years so far . It can be just alignment, but as you pointed out, it can be other issues .
If shackles , leafs etc are looking okay, alignment would be my first check.
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I have read many threads on this forum stating that Keystone (and probably all trailer mfg) do not align as part of the manufacturing process.
If I were to buy a brand new rig, I would insist that the dealer align pre delivery. No alignment No purchase.
__________________
'05 F250 6.0 Bullet Proofed - Sold
'17 F350 6.7 Lariet
'02 Montana 3280RL Upgraded a bunch.
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01-26-2019, 11:25 AM
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#30
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Montana Master
Join Date: Jan 2009
Location: Centerville
Posts: 1,350
M.O.C. #9051
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Quote:
Originally Posted by Hblick48
I have read many threads on this forum stating that Keystone (and probably all trailer mfg) do not align as part of the manufacturing process.
If I were to buy a brand new rig, I would insist that the dealer align pre delivery. No alignment No purchase.
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I think you make a good point, I fabricated a set of braces, copied from the MorRyde X factor, although I didn't have any tire or axle issues at the time, along with the MorRyde wet bolt kit. 11years and not a problem with my suspension or tires.
I am on my third set of tires, got the OE's off after a couple years, went to the overrated G614's , only decent tire at the time, they aged out, now running the Sailun S637's, highly recommended .
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