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My understanding is that LRR is like low fat. In other words its not an absolute value of a particular rolling resistance but rather a reduction of something like 30% from the Non LRR tire. I have looked and have not been able3 to find absolute numbers. Have fun, Rick
 

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I used some 145/80 Goodyear's for about 1000 miles. (I thought they would help considering the smaller patch in contact with the pavement). The taller tires helped the ride a bit and they didn't follow groved pavement as bad but they weren't as good as the bridgestones for mpg. Have fun, Rick
 
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