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- 2022 CX-5 Turbo
If you look up the specs on tirerack.com, you would be surprised.
Say, tire A (your OE) and B are both 245/50R20, and C is 255/50R20.
The diameter difference between B and A could actually be BIGGER than C and A.
The reason is in the tolerance of error in diameters. The diameter differences among
all 245/50R20 tires can be as large as 0.4 inch.
I would not take the numbers literally. I would look at the specs on tirerack.com,
if you care about the odometer/speedometer readings.
Wider tires are
good: road holding, braking
bad: MPG, hydroplaning/snow traction
Though, we are taking about a very small differences (255/265 - 3% wider if same tire).
Note also that, in cross-section view, some tires are rounder, others are more rectangular.
Therefore, a 255 tire not necessarily has wider contact patch than a 255 tire (if not the same tire)
Say, tire A (your OE) and B are both 245/50R20, and C is 255/50R20.
The diameter difference between B and A could actually be BIGGER than C and A.
The reason is in the tolerance of error in diameters. The diameter differences among
all 245/50R20 tires can be as large as 0.4 inch.
I would not take the numbers literally. I would look at the specs on tirerack.com,
if you care about the odometer/speedometer readings.
Wider tires are
good: road holding, braking
bad: MPG, hydroplaning/snow traction
Though, we are taking about a very small differences (255/265 - 3% wider if same tire).
Note also that, in cross-section view, some tires are rounder, others are more rectangular.
Therefore, a 255 tire not necessarily has wider contact patch than a 255 tire (if not the same tire)