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Old 11-01-2019, 10:15 AM   #21
Theunz
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Keep in mind that trailer axles are built with a slight arch in them, i.e. The center is slightly higher than the ends. This is done so that when weight is applied the axle will deflect to being straight. If your axles are rated to high for your trailers weight then the axle will not straighten out enough and you will get wear on the outside edge of the tires. Consequently if your axle is under rated then it will arc in the opposite direction and cause wear on the inside edges. You can also have tire wear from bent spindles, wether vertical or horizontal. And finally if the axle is not perpendicular to the frame you will have wear issues as well. The point here is, if you are having tire wear issues then you really need to go to a shop specializing in trailer axle issues not an RV dealer.
PS. A Google search for double up axle comes up empty. I would ask them what they mean by double up. And although they are a specialty shop, if they don't have a good explanation I think that I'd get another opinion.
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Old 11-01-2019, 11:53 AM   #22
CalandLinda
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Quote:
Originally Posted by MS 2018 Montana View Post
The RV is not overweight.
How did you determine that?
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Old 11-06-2019, 08:50 PM   #23
DebNJim B
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Originally Posted by jcurtis934 View Post
In reply to Jim b, the axles should have a distinct upwards arch in the center. Any deviation of that, ie less arch, and you will notice that tires will wear on the inside edges. Also keystone never torqued u bolts on the axles, NOR did alignments in the factory. There have been many that noted these conditions when actually checked. With our axle setups, you must torque the ubolts to spec after the unit is built.
Thank you jcurtis. Your info is most helpful to my issue. When I first looked at my tire wear I thought alignment problem. When I checked with my dealer about warrantee coverage he thought it was either bearing or axel issue. After that I re-examined my axels closer and noticed the front one seemed bent while the rear one was straight. I am not aware of anything that may have bent the front axel. Plus it didn't make any sense since the worn tire was on the back axel that was not "bent".
Now with the information you have given me regarding the arch in the axel, I know it is the front axel that is normal and the rear one is "flat".
It is in the shop now and I await the diagnosis which should be a new axel needed for the rear. I don't know what makes the axel go flat but this should be covered under warrantee.
Thanks again to this forum I now know more than I did yesterday.
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Old 11-07-2019, 07:56 AM   #24
mazboy
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I once was told by an 'expert' that my axles were bad too. What BS on that issue.


I don't believe that you have bad axles but since you are getting new axles, put them on...I assume they have new springs too.


Unless you want to spend about $7K for the IS system I'd just get the new axles only.
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Old 11-07-2019, 04:29 PM   #25
beeje
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Originally Posted by mazboy View Post
I once was told by an 'expert' that my axles were bad too. What BS on that issue.


I don't believe that you have bad axles but since you are getting new axles, put them on...I assume they have new springs too.


Unless you want to spend about $7K for the IS system I'd just get the new axles only.
The IS does NOT cost $7k by its self. More like $3500-4000. Add disc brakes and you could get to $7k
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