Tire Size Calculator

Decode P-metric tire codes and calculate overall diameter, sidewall height, and circumference in inches.

Tire Size Calculator

Results

Overall Diameter

27.00"

Sidewall Height

5.50"

Section Width

8.46"

Circumference

84.8"

Circumference (ft)

7.07 ft

Sidewall (mm)

139.8 mm

215/65R1627.00" diameter × 8.46" wide

How to Read a Tire Code

PartExampleMeaning
PP215/65R16Passenger tire (LT = light truck)
215P215/65R16Section width in millimeters
65P215/65R16Aspect ratio: sidewall is 65% of width
RP215/65R16Radial construction
16P215/65R16Rim diameter in inches

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