A little off the GORV theme, but maybe not....

Anyone had any experiences with upgrading or swapping trailer axles?

I'm dealing with a cargo trailer that has axles way-underrated for the weight we're hauling.

New axles are really expensive so I'm considering searching for a wrecked 5th wheel or camper that I can scalp from.

Current axles are standard tandem 3500# torsion and we need to go up to much bigger like 7,000#.  We're usually hauling at least 10,000lbs.

New axles means new tires, new brakes, etc.

If y'all got any tips, we'd appreciate 'um.........

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Robert, I've only seen one or two references to such an upgrade and it was on a class A motorhome. Weight was not the issue, they wanted disc brakes which the axel upgrade accomplished. I'm sure some of our members have done this in their jobs or careers as haulers. Hopefully, they might chime in, but I'd still always check with a commercial trailer company that does this work professionally since you're haulin quite a load. Members, any experience?

I am a ironworker/welder by trade and know a little about steel. Your trailer was probably engineered to carry so much. Sounds like its being overloaded quite a bit. Just upgrading the axle won't keep the frame bending or cracking over time. If U R hauling that much on a regular basis consider upgrading.

can't find ANYTHING on the market.

it seems they make equipment haulers but they'll all flat-beds and don't make anything enclosed.

closest I've seen with heavier axles is too big or just way too expensive

northern tools has a selection of axles and brake accessories.

saw that - except there are no Northern Tools in the NORTHwest.... so much for NORTHERN Tools... LOL


Robert, Have you thought about a live stock trailer and converting to what you need, just a thought.

considered it, but most are way too heavy

I agree with Chuck - axles are not the only issue.  The construction of the trailer may not be suitable to your use.  And brakes must definitely be upgraded. 

We recently had 3500 lb axles replaced on a '63 because the brake and axle parts were obsolete.  For dual axles with all new electric brakes we paid about $2200.  Tires and new wheels were another $800.  So it's not a cheap job to have done.  The difference is that our axles, by state law in Indiana, had to be replaced with a comparable type axle, so the new ones have 6000 ratings.  I'd still never carry that much because the trailer isn't rated for it in it's construction, but it was quite an upgrade.  


last quote we got was about $3500+

only $500 less than I payed for the whole trailer....

We once had an axle changed right at the manufacturer's shop.  I don't know where you are getting quotes from.  The ones I mentioned above were done by an RV repair shop that specializes in axles.  I don't know where you are located, but if you can find either of those places the price might be better.  That price seems quote high.

ya, you're telling me.  we're up in Southern Oregon.

last quotes I got were down in Phoenix, AZ - and every "dealer" or RV shop I talked to said they had to special order the axles taking 4-5 weeks.....

we're on the road but we're starting over when we get back in a few days........

After chewing on this for awhile if you're haulin 10,000 pounds in/on a cargo trailer with 3,500 pound axles the only way to go is to craigslist that one and get a heavy duty cargo trailer. It's wayyy past any safe rating. There's lots of good used ones waiting for new owners out there. 




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