Lowsuv wrote:
In simple terms :
Does your comparison boil down to the calculation that an ST tire with a load index of 113 on the sidewall really only has the capacity of 91 % of an LT tire with a load index of 115 on the sidewall ?
Calculated (113-6)divided by ( 115-2 ) = 94.6 %
No you cant devide the LI's , they stand for a sertain maximum load, as I explain in the reaction between ours.
But will make the right calculation here to se whats the difference.
113-6=107LI stand for 975 kg and 115-2=113 LI stands for 1150 kg Lmax.
then same division 975/1150= 84.8%
further it boils down to that , with adding that specific ST-tire has 84.8% of the maximum load of the that specific LT tire to give it the same livetime and savety.
Edit: but you can use the system I described so the LT has 6 LI steps higher so rougly 6*3% more maximum load= LT113=1.18* 107ST.
Then ST is 1/1.18= 0.8474=84.74 % maxload of the LT wich is pretty accurate
someone once called this on the road methode, the back of the sigar-box methode.
