How to estimate trailer capacity? -
LinkBack Thread Tools
post #1 of 3 Old 10-14-2013, 04:14 AM Thread Starter
Registered User
2002 TJ Wrangler 
Join Date: Jan 2010
Location: Wetaskiwin
Posts: 2,499
How to estimate trailer capacity?

A while back I had posted that I got a little cargo trailer for free, and I did do some work to it (new boards on the deck, paint, new lights, etc) but I would like to know what my axle/springs can handle.

I know the tires are only rated to 590lbs (each) and would like to get larger ones with higher capacity, but I do not want to if the axle/springs are not up to it.

The wheels are 4 lug; and the axle is a square tube axle. Ive read that if you measure the diameter of the axle, you can get a good 'guess' on the weight rating; but thats only for round axles, isnt it?

As for the leaf springs, I have NO clue how to find out what they are rated for.

I DO know for a fact that the trailer deck itself will hold a fair bit of weight (Id say its built like a 3500lbs deck), but as of now, I KNOW the tires ARE a limiting factor, and the axle/springs may be as well.

I honestly just would like to know what is safe to haul; more than what I could haul at the max (I did haul a trailer load of scrap batteries; weighing around 1100lbs... that was sketchy enough for me on those tires even though I only went about 1 km!).

Maverickxeo is offline  
Sponsored Links
post #2 of 3 Old 10-15-2013, 12:19 PM
Registered User
1998 TJ Wrangler 
Join Date: Jun 2010
Location: Texas/OK Border
Posts: 2,026
Originally Posted by Maverickxeo View Post
... I would like to know what my axle/springs can handle.
Rule of thumb....
4 lug axles are 1000 lbs max
5 lug bolts = 3500 lb axles
6 lug bolts = 5200 lb axles
8 lug bolts = 7000 lbs

1 3/8" axles tube diameter = 1000 lbs
2 3/8" = 3500 lbs
3" = 6-7000 lbs
3 1/2" - 8,000 lbs
Originally Posted by Maverickxeo View Post
..... as of now, I KNOW the tires ARE a limiting factor.....
I would say if no brakes....that is the limiting factor!
RowJ is offline  
post #3 of 3 Old 10-15-2013, 03:10 PM
Registered User
Indy's Avatar
Join Date: Oct 2004
Location: Viera
Posts: 3,455
Your trailer is a LIGHT weight trailer, I'd say 1000 pounds max before I had serious stress about hitching it to my truck. The tires aren't the limiting factor on that one, they're rated for a smidge more than the trailer likely would be. You can go to bigger tires if you need the clearance but the weight limit on the trailer isn't going to budge.

I'm the only gay eskimo.
Indy is offline  

Quick Reply

Register Now

In order to be able to post messages on the forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome