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Rolling resistance of Tires?
Is an objective (empirical) measurement of rolling resistance available?
All I know is the column in Consumer Reports assigning one of five icons,
ranging from all-black to all-red.
CR rated the Michelin MXV4 Plus Energy all-red (best), along with one
Continental tire, and they recommended the MXV4+ for long tread life.
Our new Prius was fitted with Goodyear Integrity OEM tires, not tested.
Any recommendations for a low rolling-resistance tire besides the MXV4+?
I guess there's nothing wrong with the Goodyear Integrity, but it gets
a much lower rating on Tirerack.com.
CR's top-rated tire in the Nov 2007 test was the Dunlap SP Sport 5000,
only $85, but apparently not available in the correct 185/65-15 size
for the non-Touring Prius.
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