Quote:
Originally Posted by roflwaffle
Maybe a larger tire = better RR, maybe not. I don't think anyone here has posted any data indicating that's the case in general. Maybe for specific manufacturers there are anecdotal examples, but as a whole I don't think anyone has comprehensive data indicating that's the case.
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Barry's Tire Tech
This is an analysis of some data submitted to the California Energy Commission. Among the data is a study of tire size. Needless to say, that there are a lot of factors, but if we isolate tire size: Bigger = better - and by bigger, the data seems to point to every parameter in the numbers used to delinate a "size" - wider or taller or larger in rim diameter.
But there is such a huge difference between tires (meaning make and model), your point is well taken.