4Meaning of section width of tyre

4 Meaning of section width of tyre

4 Meaning of section width of tyre

(1) The section width of a tyre is the tyre’s width worked out under subsections (2) to (4).

(2) The tyre width of a radial ply tyre is the number of millimetres marked on the tyre in the position labelled ‘section width in mm’ in the following diagram—

Position of section width marking on radial ply tyre

(3) The tyre width of a bias-belted tyre is the number of millimetres equal to 25.4 times the number marked on the tyre in the position labelled ‘width code in inches’ in the following diagram—

Position of width code marking on bias-belted tyre

(4) The tyre width for another type of tyre is the width of the part of the tyre that normally comes into contact with the road surface.

(5) In this section—

bias-belted tyre means a bias-belted tyre within the meaning of ADR (Definitions and Vehicle Categories).