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Old 09-01-2008, 07:19 PM   #14 (permalink)
SirKeats
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Join Date: May 2008
Location: Southern Oregon
Posts: 111

GeRide - '89 Geo Metro *XFi
90 day: 54.26 mpg (US)
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quick follow up question...

the stock tires say: 155 77S R12

the calculator provided doesn't have the 77 option. i found another one that let me manually type in figures though.

just currious though... does that 77S mean something else maybe? every other calc offers only 155/75 or 155/80 options. just thought the 77 was a bit weird so figured i should check first.

FYI - new tires are 155/80 R13

thanks!
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