Tyre size

/ R

Printed on the tyre sidewall and in the vehicle registration certificate.

Rolling circumference

1,985.2mm

1,985.2

A 205/55 R16 tyre has a rolling circumference of 1,985.2 mm and an outer diameter of 631.9 mm.

Ø 631.9 mmSidewall 112.8 mmRim 16″ = 406.4 mm
Outer diameter
631.9 mm (63.2 cm)
Sidewall height
112.8 mm
Tyre width
205 mm
Rolling circumference in cm
198.5 cm
How this was calculated
Sidewall height = 205 × 55 % = 112.8 mm
Outer diameter = 16 × 25.4 + 2 × 112.75 = 631.9 mm
Rolling circumference = π × 631.9 = 1,985.2 mm

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