Porsche Cayenne Turbo Driver Manual page 290

A - Nominal width in mm
B - Cross-section ratio in %
C - Belt type code letter for radial
D - Rim diameter in inches
E - Load rating code number
F - Speed code letter
Inscription on radial tyre
Speed code letters
The speed code letter F indicates the maximum
permissible speed for the tyre.
This code letter is shown on the tyre sidewall.
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Minor Repairs
T = up to 190 km/h (118 mph)
H = up to 210 km/h (131 mph)
V = up to 240 km/h (149 mph)
W = up to 270 km/h (167 mph)
Y = up to 300 km/h (186 mph)
Tip on driving
f Tyres with a maximum speed rating that is
lower than the specified maximum vehicle
speed may be mounted only if they bear an
M+S identification on the tyre sidewall.
Please note that in addition to winter tyres, all-
season and all-terrain tyres are also subject to
speed limits and bear this identification.
Inscription on light alloy wheels
The rim width in inches G and the rim offset L are
visible from the outside. This information can be
found near the tyre valve.
G - Rim width in inches
H - Rim-flange contour code letter
I - Symbol for drop-centre rim
J - Rim diameter in inches
K - Double hump
L - Rim offset in mm