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Old 02-08-2011, 04:16 PM   #17 (permalink)
SuzukiSteve
EcoModding Lurker
 
Join Date: Oct 2010
Location: Kansas City, MO, USA
Posts: 38

Steve's Suzuki - '00 Suzuki Swift GA
Team Metro
90 day: 51.99 mpg (US)
Thanks: 5
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I went from 155/80R13 tires to 155/80R15 on my suzuki swift. So taller but just as wide. I went from ~42 to ~47 highway mpg. But as others have said it depends heavily on your cars gearing. My car still revs higher than I would like on the highway.
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