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Old 09-15-2017, 10:10 AM
Dash07 Dash07 is offline
Join Date: Apr 2017
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Default Blowout issues

We own a 2005 2720 and have had blowouts. Research indicates installing an axel and lift kit that accommodates 15" wheels. Anyone know of a place in Colorado that does this.
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Old 09-15-2017, 10:33 AM
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Bill Bill is offline
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You don't require a change to the axle or hubs. The new 15-inch wheels will fit the existing lugs. FWIW, the hole pattern is called "5 on 4 1/2" and it is pretty standard on RVs, campers, boat trailers, utility trailers, and so forth.

If you need a lift (you don't necessarily, but probably) it is quite easy to add, even if you choose to do it yourself. For example, see Bill Miller's post in the TM Technical Library.
Any shop that deals with trailers can handle it. It does not require a TM dealer, or even an RV dealer.

2006 2720SL swing tongue, 15" tires
2014 Ford F-150 5.0L
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Old 09-15-2017, 11:58 AM
Larryjb Larryjb is online now
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As Bill says, it is not necessary to change the axle. However, in practice, it is surprisingly easy to exceed the maximum weight rating for the axle, so I could understand the desire for some one to upgrade the axle as well. On the other hand, I haven't read anywhere on this forum where some one as bent or otherwise damaged an axle due to overloading.

2002 Tahoe
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2001 2720SD

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Old 09-16-2017, 02:21 PM
pmhellings pmhellings is offline
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For what it's worth, you don't need to upgrade the axle (as long as you stay within weight limitations) OR install a lift kit OR use 15" wheels. You can get Load Range D tires in 14" size. Check out Tires come mounted on appropriate, for the higher pressure, wheels. Just have balanced and install them. About $120 each, delivered.

2010 2720SL
Green Cove Springs, Florida
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Old 10-30-2017, 01:16 PM
flipflop flipflop is offline
Join Date: Sep 2016
Location: Colorado
Posts: 106

Originally Posted by Dash07 View Post
We own a 2005 2720 and have had blowouts. Research indicates installing an axel and lift kit that accommodates 15" wheels. Anyone know of a place in Colorado that does this.
Merrill Axle in Lakewood does a lot of trailer work like lifts, brakes, axles. They do good work, $125/hr labor. 303 237-8846.
2008 2619, 85W factory solar, 150W Samlex inverter, 40 gallon fresh water tank, dual NAPA 8144 225Ah 6v batteries, WFCO WF8955A 3-stage charger/converter
2007 4Runner 4WD V8 tow vehicle, Firestone airbags, 600W Samlex PSW inverter, Toytec Boss suspension
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Old 10-30-2017, 04:34 PM
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tentcamper tentcamper is online now
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I think the real idea is to increase the tire load rating with the 15" tires. I don't think the axle has an issue with the weight. The axle rating; you only measure the weight carried by the rubber torsion springs. You would reduce the tongue weight, tires, brake assembly, and spindle weight. I would think that on must TM's, that is a reduction 450 to 700 lbs from the actual weight of the trailer.

But one thing I did notice when we changed TM's; from one with a 3.5k axle to one with a 5.2K axle. The 5.2K axle had huge bearing in comparison to the 3.5K axle. The outer bearing which is the smaller bearing of the set. On the 5.2K axle the bearing larger than the inter bearing on the 3.5k axle. The inter bearing on the 5.2k axle is just so much bigger than the 3.5K axle's bearing. In looking at the spec of the 5.2K axle it has the same bearing set as the 6.0K axle the only difference is the brake set.

If I was think of changing my axle and doing the lift kit for height. I would only do the axle and order an axle with a different angle of the swing arm. I think you could achieve the desired lift with a different swing arm angle.
Art & Joyce
Thornville, OH
2009, 3023-QB, 5.2K axle, Swing Hitch, factory bike hitch, almost all the options, many mods.
2012 Highlander
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