Toyota Matrix 2009 Owner's Manual page 295

Tire size
Typical tire size information
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Tire dimensions
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The illustration indicates typical
tire size.
Tire use
(P = Passenger car,
T = Temporary use)
Section width (millimeters)
Aspect ratio
(tire height to section width)
Tire construction code
(R = Radial, D = Diagonal)
Wheel diameter (inches)
Load index (2 or 3 digits)
Speed symbol
(alphabet with one letter)
Section width
Tire height
Wheel diameter
6-1. Specifications
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6