Quote:
Originally Posted by jimepting
It isn't obvious to me that that is a test of rolling resistance or fuel economy. The dyno rollers are only about a foot in diameter, so the tire contact patch is completely different than street conditions.
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It should still translate you could (assuming the dino allows load control) run the car to 80mph with a very small load at stock psi time it then do a 60psi run followed by an 80psi run keeping everything the same. Then you just take the percent change and you will have a repeatable measure that will hold the same for all surfaces under the same conditions as the only change is the psi.