It’s no secret that tyres play an important role in making your car go. But did you know that the ID number on the side of your rubber is more than just a complicated maths sum? Watch this video to find out exactly what it all means.

LOAD AND SPEED RATING INDEX

81 = 462 kg

82 = 475 kg

85 = 515 kg

86 = 530 kg

87 = 545 kg

90 = 900 kg

91 = 630 kg

95 = 690 kg

96 = 710 kg

N = 140 km/h

P = 150 km/h

Q = 160 km/h

R = 170 km/h

S = 180 km/h

T = 190 km/h

U = 200 km/h

H = 210 km/h

V = 240 km/h

Z = 240 km/h

W = 270 km/h

Y = 300 km/h

Click here to learn how to check your tyre pressures.