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Tyre Selection Help

Please note, we specify tyres employing the code,
WIDTH/PROFILE R RIMSIZE SPEEDRATING (e.g. 195/65 R15 V)

An alternative commonly seen is,
WIDTH/PROFILE SPEEDRATING R RIMSIZE (e.g. 195/65 VR15)

The two systems are equivalent, the "R" in each case representing Radial tyre construction.

GENERAL

The specification for a vehicle's tyres can be obtains from a number of sources:

  • From the vehicle manufacturer's handbook - Please note: If the vehicle has been fitted non-standard or even special option tyres the handbook may not list the correct tyres.
  • Directly from the existing tyres on the vehicle - Please note: Some high performance vehicles have different tyres front and rear. It is always worth comparing front and rear tyre specifications to ensure that the correct tyres are selected for all tyres ordered.
  • Directly from the manufacturer - Please note: The manufacturer will probably not have a record of whether special tyre and wheel options were fitted to the vehicle during manufacture or whether any after market modifications have been made.
It should be noted that in general the most reliable source of information is the tyre itself!

READING A TYRE SPECIFICATION

TYRE WIDTH (WIDTH / PROFILE R RIM SPEEDRATING)

This is the width of the tyre and is quoted in millimeters. 

TYRE PROFILE (WIDTH / PROFILE R RIM SPEEDRATING)

The tyre profile is the depth of the tyre and is quoted as a percentage of the tyre width.

RIM SIZE (WIDTH / PROFILE R RIMSIZE SPEEDRATING)

This defines the diameter of the metal wheel on which the tyre fits.

SPEED RATING (WIDTH / PROFILE R RIM SPEEDRATING)

This code specifies the maximum speed at which the tyre can be used when in good condition. Please note that sensible safe driving is recommended at all times and 

Speed SymbolSpeed Rating
F80 km/h (49 mp/h)
G90 km/h (55 mp/h)
J100 km/h (62 mp/h)
K110 km/h (68 mp/h)
L120 km/h (74 mp/h)
M130 km/h (80 mp/h)
N140 km/h (87 mp/h)
P150 km/h (93 mp/h)
Q160 km/h (99 mp/h)
R170 km/h (106 mp/h)
S180 km/h (112 mp/h)
T190 km/h (118 mp/h)
H210 km/h (130 mp/h)
V240 km/h (149 mp/h)
W270 km/h (168 mp/h)
Y300 km/h (186 mp/h)
Z (ZR)over 240 km/h (over 150 mp/h)

LOAD RATING (WIDTH / PROFILE R RIM LOADRATING SPEEDRATING)

This code defines the maximum load the tyre can carry. For a given size of tyre there is usually little variation in load rating offered by different manufacturers. We list the load rating alongside each tyre's name (see the (LR=xx) figures when WIDTH, PROFILE, RIM & SPEEDRATING have been entered.)

OTHER TYRE SPECIFICATIONS

The details listed above pertain to tyre ratings of the form,

WIDTH / PROFILE R RIMSIZE SPEEDRATING

 There are, however, other tyre specifications that are less common. For assistance please call us.

Avon, Bridgestone, Dunlop, BF Goodrich, Firestone, Falken, Goodyear, Hankook, Michelin, Pirelli, UniRoyal, Yokohama

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