Quad tyre specificities explained:
3PMSF
The 3PMSF marking certifies that the tyre has passed official snow performance tests, guaranteeing good grip.
DOT
DOT code : date of manufacture
E-mark
E-mark : approval by the ECE/EC
Front/Rear
Interchangeable front/rear tyre.
M+S
Efficient on muddy terrain or on light snow.
MST
After mounting, tyre is wider than indicated
NHS
Not for Highway Service
PR
Plies : measure of the tyre sidewall strength according to hardness and thickness.
TT
Tubetype : tyre requiring inner tube.