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# Why the load index of single tire is higher than double tire's?

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## Why the load index of single tire is higher than double tire's?

(OP)
As subject, i havent found a satisfactory answer at present.
any reply is welconmed,thanks in advance!

### RE: Why the load index of single tire is higher than double tire's?

Then what the 9% really addresses is the way the truck's corner weight can unequally divide between the two tires when fitted in a dual configuration?

Norm

### RE: Why the load index of single tire is higher than double tire's?

I will post a concise citation when I find one. The continental sales training material over simplifies the subject . The reason is load on the individual tires and the factors that affect that.
1 is indeed crown , if the road surface is at angle to the tires the inner tire will have a greater percentage of the load .
2. even 2 new identical tires will not be exactly the same dimensions as they wear differences will increase , the larger tire will carry more load.
3. camber of the axle and how concentric the wheel mounting is will affect how much load is placed on each tire.

The 9 % is a margin of safety , I did not remember that exact number ,but I don't remember many things.
Ed

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