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Tyre Markings

Please note that the tyre shown below is a diagram for illustrative purposes only. Some of the markings are contradictory to each other and in reality they would never appear together.

Symbol glossary

Below are listed the most commonly encountered abbreviations. You can find them both on the sidewalls of tyres and at Oponeo.co.uk.

BasePen
Grounded electrostatic (tread with silica mixture in the centre of tread evacuating electrostatic charge)
BLT
(Raised Black Letters) raised black letters
BSW
(Black Sidewall) black letters on the tyre
COLD
information for measuring the pressure of cold tyres
DOT
indicates that the tyre meets the prescribed safety standards established by the U.S. Department of Transportation. Next to DOT on the tyre there is identification code consisting of a sequence of 12 numbers and letters
DSST
Dunlop's RunFlat tyre
ECE, e, E
mix and construction changed
EMT
(Extended Mobility Tyre) enables driving after losing tyre pressure, even if the loss is almost total
FP
(Fringe Protector) a rim protector also known as Rim Fringe Protector (RFP). A tyre with a rim protector. Dunlop uses the symbol MFS.
FR
tyre protecting the rim from mechanical damage. Usually it appears on tyres with a profile of 55 and smaller, depending on the manufacturer of the tread, size and type of tyre. FR is not marked on the sidewall of a tyre. Typical examples of sizes with FR mark: 205/55R16 (with some exceptions), 195/50R15, 205/45R16 and more rarely 145/65R15 or 235/70R16 (in SUVs)
G1
tyre pressure control for 4x5 tyres approval for Renault Laguna 2 - passenger car tyres
INSIDE
this side of the tyre should be placed facing in towards the vehicle
JLB
(Jointless Band) tapless belt wrap made of nylon
LI
(Load Index) indicates the maximum load of a tyre
LT
(Light Truck) this symbol placed in front of the tyre size indicates that it is a tyre for 4x4 cars and small lorries (U.S. designation)
MAX
maximum, that is the maximum pressure value in a tyre
M+S
(mud and snow) Symbol used in addition to winter and all-season tyres.
OWL
(Outlined White Lettering) White letters on a sidewall
OUTSIDE
this side of the tyre should be placed facing out from the vehicle
P
(Passenger) this symbol placed in front of the tyre size indicates that it is a tyre for passenger cars (U.S. designation)
PAX
zero-pressure Michelin tyre with stable inner ring
PSP-Beta
Noise reduction due to tyre construction
R
(Radial) Radial tyre
RBL
(Recessed Black Lettering / Letters) hollow black letters
RETREAD
retreaded tire
RF
(XL = Reinforced) Reinforced tyre for higher loads
RFT
Run Flat Tyres, used by Bridgestone, Firestone and Pirelli
RIM PROTECTOR
tyre which protects against rim damage
ROF
(Run On Flat) symbol used by Goodyear and Dunlop for tyres which may still be used after a puncture
ROTATION
wheel rolling direction
RSC
Run Flat System Component, Run Flat tyre by Bridgestone
RWL
(Raised White Lettering / Letters) raised white letters
SST
(Self Supporting Technology) tyres like Run on Flat which may still be used after a puncture
SI
(Speed Index) indicates the maximum possible speed of usage
TL
(Tubeless Tyre) tyre without a separate inner tube
TT
(Tubed Tyre) tyre with a separate inner tube
ULW
(Ultra Lightweight) lighter tyre built with aramid fibres
XL
(RF = Reinforced) reinforced tyre
ZP
Zero pressure tyre, run on flat by Michelin.