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Old 10-17-2019, 02:05 PM   #8 (permalink)
MetroMPG
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Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 21,720

Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

MPGiata - '90 Mazda Miata
90 day: 53.56 mpg (US)

Winter beater Metro - '00 Chevrolet Metro
90 day: 61.98 mpg (US)

Fancy Metro - '14 Mitsubishi Mirage top spec
90 day: 58.72 mpg (US)

Even Fancier Metro - '14 Mitsubishi Mirage top spec
90 day: 66.29 mpg (US)
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donuts



Quote:
Originally Posted by ennored View Post
how about 4 mini spares to lower the rolling resistance. Should be nearly free and maybe net some decent gains
Just for fun, I tested 4 space-savers at 70 PSI (above the rating), and they still performed HORRIBLY in terms of rolling resistance. Worse than any other tire I tested that day:

Thread: Testing rolling resistance of the Various Tires of the Suzukiclone Fleet (RE92 wins)

Obviously I'm not saying the same thing will happen with every brand of space-saver tire, but it does show it's not safe to assume a happy & efficient improvement.
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