Quote:
Originally Posted by PaleMelanesian
I'd guess these are "sport" compound tires, good for grip but bad for FE. My brother's Mazda3 ran through the OEM tires in about 25,000 miles, which is a good sign of soft sticky rubber.
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While the 215-45r18 size stock tires are categorized as "Max Performance Summer" tires, they're not DOT racer-sticky, and they can't have nearly the rolling resistance of all the friction-generating edges in a well-siped winter tire. I've got plenty of tread left on my tires, although they are stored winters. They are stickier than those hockey-puck 70K mile tires though, that's for sure.
And measuring the correct size to correct speedo/odometer readings? Come on! That's just common sense. FYI, these particular winter tires measure at 99.052% of the stock tire size, based on odo vs. gps readings over long distances. And I have to say, Mazda did a heck of a job calibrating the speedo to the stock tire size. My GPS has confirmed amazing accuracy on long summer trips with the stockers.