@Prem: You will travel 40,000 tire (American spelling) km. Therefore, each 
tire needs to be on the ground for 8,000 km. One way to accomplish this is 
to rotate the 5 tires each 2,000 km. Then, each tire will be on each wheel 
for 2,000 km, and will be the spare for 2,000 km. Another way, with less 
tire switching, is to switch the tire on a different wheel with the current 
spare each 2,000 km. This involves moving only 2 tires each 2,000 km. The 
diagram of tire positions is
 
  0        2000      4000      6000      8000
A B       S B         S A         S A        S A
C D       C D        C D         B D        B C
 S            A            B            C            D
 
Dave

On Tuesday, August 28, 2012 11:09:47 AM UTC-5, Prem wrote:

> Guys Something good to share here..
>
> Query :-  Tomorrow I am Planning to take my car for a ride of 10000 ( Ten 
> Thousands )  Km. As the journey will be rough so I am planning to pack 5 
> new tyres..  Now being very conservative, I want to use each of them such 
> that they all wear equally.. Now the question is how shall I achieve it and 
> what will be the total journey traveled by each on of them.
>
>

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