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Load Rating Vs. Load Range

I bought my first diesel truck, a 2006 2500HD/Duramax. Dealer told me that it had a lot more load than it really does. I also bought a 5th wheel with a 2800# pin weight. Loaded, my rear tires are overloaded by 1200#. I can't find a tire in a load range higher than the "E" range now on the truck. I have seen 19.5 inch wheels and tires that will give me the extra capacity.
I know that I screwed up, so please help me without beating me up.
ok,, I did a litle research just for you:

I checked on the discount tire website looking for tires I believe to fit your application. I have learned a little about "load ranges" and "load rating". It seems that "load range" is used for tires designated as "light truck" only. If you utilize the "load rating" instead of the "load range" system you will be able to find tires with a higher weight rating.

Go to this website: http://www.discounttire.com/dtcs/se...r=2007&sw=false&cs=265&vid=010591&rd=16&ar=75

you will see this tire:
Pathfinder All Terrain
LT265/75R16E1 123Q W (1575

It is my understanding that the "123" toward the end of the tire size is the "load rating".

At this website there is a chart that identifies the "load rating":
http://www.discounttire.com/dtcs/infoLoadIndex.dos

By translating the "123" into "load rating" it should be 3,417 lbs per tire, which I think is better than what you have seen using the "load range" scale, (about 2800 lbs?).

Using this method it looks to me that you can get up to nearly 7,000 lbs on the rear axle, I think that this would probably do the trick for you!

If this is not quite enough, I would think that you could do better than the "123" rating by looking around.

From what I have gathered the "Load Range" system is kind of a "bastard child" of the tire industry, and that it is primarily used on LT tires for inflation recomendations.

Good Luck!
 

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Vernh,
Your 100% correct. I only found out about this problem a couple of days ago, and had some foot surgery yesterday, so I can't get to a scale (60 miles from here) until I can drive.The scale will be my first move before doing anything.
Thanks
Yuo must really live in the sticks! (or californina) 60 miles to a scale is a long way.

I am in a business where I might be able to find you a closer one if you want me to try.
 

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I live in Navarre, Florida - about half way between Pensacola and Fort Walton Beach. Closest scale that I know of is at a truck stop off of I-10 in Crestview.
I tried looking them up in the phone book and at truck places.
Yea, there is one in pensacola at the jct of hwy 29 north and I -10,, I dont think that is any closer though!

My mother in law lived in navare before the huricane, she still lives around there somewhere close by.
 
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