4x4 tyre markings, 4x4 tyres and driving tips

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4x4 tyre markings

Millimetric

255/55 R 18

109H

BFGoodrich MACADAM T/A

Size: 255/55 R 18

255	Section width in mm
55	Aspect ratio % sidewall height to section width.
R	Radial construction
18	Wheel rim diameter in inches.
XL	Extra Load
109	Load index (109 = 1030kg)
H	Speed symbol (H = 130mph)
BFGoodrich MACADAM T/A	Commercial name

Flotation

31 x 10.5 R 15

LT/C

109S

BFGoodrich All Terrain T/A ^KO

Size: 31 x 10.5 R 15

31	Section width in mm
10.5	Aspect ratio (percentage sidewall height to section width.)
R	Radial construction
15	Wheel rim diameter in inches.
LT	Category LT - Light truck
C	Load range (USA)
109	Load index (109 = 1030kg)
s	Speed symbol (H = 130mph)
BFGoodrich All Terrain T/A ^KO	Commercial name

Glossary

T/A	Traction Advantage
KO	Key benefit On/Off road
KM	Key benefit Mud Traction
M+S	Mud and Snow. Tyre is suitable for mud and snow conditions
P	Passenger car tyre - USA origin
LT	LightTruck tyre - USA origin
REINF	Reinforced. Tyres that have a higher load rating than the standard version
XL	Extra Load. Newer marking with the same meaning as REINF
TRIGARD	Innovative 3-ply polyester carcass construction for damage resistance