I'm far less educated than either
@
Thai
or
@
MAST4R
on this subject, but when you compare the diameter of the KO2 and the AT3W
KO2: 31.65" and 657 REV/mile
AT3W: 31.7" and 668 REV/mile
...if the AT3W is truly .5" larger in diameter, how is it possibly doing more revolutions per mile?
The math isn't adding up to me...? But this is what TireRack says about the REV/mile spec:
Quote:
Tire revolutions per mile cannot be calculated by simple math because the tire tread and sidewall bend and stretch (deflect) when the load of the vehicle presses the tire against the road.
Since the resulting loaded or rolling radius is less than half the tire's published overall diameter (which would only reflect the tire's unloaded radius), calculating the tire's absolute rolling circumference isn't possible.
Additionally, a tire transitions from an unloaded to loaded state as it rolls, continuously flattening where the tread footprint comes into contact with the road. These continuous transitions result in some tread slippage, again increasing the tire revolutions per mile beyond what simple math would indicate.
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That makes me wonder if the P-Rated AT3W is a more pliable, softer material... allowing it to "slip" more against the road compared to a LT tire?
