Many simple gauges currently available give only an approximate indication of depth, and have been found inaccurate up to 0.5mm. Such errors could be the difference between legal and illegal!
The Baty tyre tread gauge has colour-coded bands on the dial:
GREEN BAND: tread depth in excess of 2mm and is therefore safe/legal
YELLOW BAND: tread depth between 2mm and 1.6mm: depth legal but CAUTION – tyre will need replacing very soon
RED BAND: tread depth less than 1.6mm: ILLEGAL! Tyre must be replaced
TG10-BM/1 | Tyre Tread Depth Gauge Kit | POA |
TG10-13/B | Tyre Tread Depth Gauge Setting Piece | POA |