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- Mazda Akera 2.2DE Auto 2015
Not worried about speedometer or odometer, only if it will have issues with transmission /gearbox. That's all I want to know specifically with either 245x50x19 or 255x50x19.Take a look at the tire revolutions per mile for the different tire sizes under specs on TireRack on line. Subtract the difference and divide by the stock number x 100 and you will get the effect in percent to your speedometer and odometer.