Jaguar S-Type. Manual - part 50

 

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Jaguar S-Type. Manual - part 50

 

 

Tires

208

L

R (4)

The R stands for radial. Radial ply 
construction of tires has been the industry 
standard for the past 20 years.

Wheel diameter (5)

This two-digit number is the wheel or rim 
diameter in inches. If you change your 
wheel size, you will have to purchase new 
tires to match the new wheel diameter.

Load index (6)

This two- or three-digit number is the 
tire's load index. It is a measurement of 
how much weight each tire can support. 

Note: You may not find this information 
on all tires because it is not required by 
law.

Speed rating (7)

The speed rating denotes the speed at 
which a tire is designed to be driven for 
extended periods of time. The ratings 
range from 99 miles per hour (mph) to 186 
mph. These ratings are listed in the 
following table. 

Note: You may not find this information 
on all tires because it is not required by 
law.

U.S. DOT Tire Identification Number 
(TIN) (8)

This begins with the letters DOT and 
indicates that the tire meets all Federal 
standards. The next two numbers or 
letters are the plant code where it was 
manufactured, and the last four numbers 
represent the week and year the tire was 
built. For example, the numbers 3197 
means the 31st week of 1997. The other 
numbers are marketing codes used at the 
manufacturer's discretion. This 
information can be used to contact 
consumers if a tire defect requires a 
recall.

M+S (9)

The M+S or M/S indicates that the tire 
has some mud and snow capability. Most 
radial tires have these markings: they 
have some mud and snow capability.

Letter Rating

Speed Rating

Q

99 mph

R

106 mph

S

112 mph

T

118 mph

U

124 mph

H

130 mph

V

149 mph

W

168 mph

Y

186 mph*

* For tires with a maximum speed 
capability over 149 mph, tire 
manufacturers sometimes use the 
letters ZR. For those with a maximum 
speed capability over 186 mph, tire 
manufacturers always use the letters 
ZR. 

209

Tires

R

Tire ply composition and materials 
used (10)

The number of plies indicates the number 
of layers of rubber-coated fabric in the 
tire. In general, the greater the number of 
plies, the more weight a tire can support. 
Tire manufacturers also must indicate the 
materials in the tire, which include steel, 
nylon, polyester, and others.

Treadwear number (11)

This number indicates the tire's wear rate. 
The higher the treadwear number is, the 
longer it should take for the tread to wear 
down. For example, a tire graded 400 
should last twice as long as a tire graded 
200. 

For more information, refer to page 213.

Traction letter (12)

This letter indicates a tire's ability to stop 
on wet pavement. A higher graded tire 
should allow you to stop your car on wet 
roads in a shorter distance than a tire with 
a lower grade. Traction is graded from 
highest to lowest as AAAB, and C. For 
more information, refer to page 213.

Maximum load rating (13)

This number indicates the maximum load 
in kilograms and pounds that can be 
carried by the tire.

Temperature letter (14)

This letter indicates a tire's resistance to 
heat. The temperature grade is for a tire 
that is inflated properly and not 
overloaded. Excessive speed, 
under-inflation or excessive loading, 
either separately or in combination, can 
cause heat build-up and possible tire 
failure. From highest to lowest, a tire's 
resistance to heat is graded as AB, or C
For more information, refer to page 213.

Maximum permissible inflation 
pressure (15)

This number is the greatest amount of air 
pressure that should ever be put in the tire 
under normal driving conditions.

Tires

210

L

RECOMMENDED TIRE 
FITMENT

The following chart details the tires 
recommended for use in the countries 
listed below:

A. Mexico.

For all other countries refer to your 
local Jaguar Dealer for specific tire 
fitment.

3.0 litre, 4.2 litre

Tire size

Pattern

A

245/40R18 97Y

Pirelli P Zero

yes

S-TYPE ‘R’ Wheels

Tire size

Pattern

A

8 x 18 (Front)

245/40 ZR 18 Continental 
ContiSport Contact

yes

9.5 x 18 (Rear)

275/35 ZR 18 Continental 
ContiSport Contact

yes

8 x 19 (Front)

245/35ZR19 Pirelli P Zero Rosso

yes

9.5 x 19 (Rear)

275/30 ZR19 pirelli P Zero Rosso

yes

211

Tires

R

TEMPORARY USE SPARE 
WHEEL

!

WARNING:

Failure to comply with the following 
can be dangerous. When a temporary 
use spare wheel is fitted, switch off 
Dynamic Stability Control, drive with 
caution and replace with the specified 
wheel and tire assembly as soon as 
possible. Do not fit more than one 
temporary use spare wheel at one time. 
Temporary use spare wheel maximum 
speed is 80 km/h (50 mph).

For information about temporary use 
spare wheel, refer to page 161.

TIRE CARE

In the interests of safety and reliability, it is 
advisable to check the tires, including the 
spare, for condition and pressure on a 
weekly basis. Refer to page 204 for 
instructions on how to check tire 
pressures.

Wear

All tires fitted as original equipment 
include Tread Wear Indicators (TWI) in 
their tread pattern. When the tread has 
worn to a remaining depth of 1.6 mm, the 
indicators appear at the surface as bars 
which connect the tread pattern across 
the full width of the tire.

It is illegal, in certain countries, 
to continue to use tires after the tread has 
worn to less than 1.6 mm over three 
quarters of the width and the entire 
circumference of the tire.

It should be noted that the properties of 
many tires alter progressively with wear. 
In particular the wet grip and aquaplaning 
resistance are gradually but substantially 
reduced. Extra care and speed restriction 
should, therefore, be exercised on wet 
roads as the effective tread depth 
diminishes.

Steel road wheel 
size

4 x 16

Tire type/size

145/80 R 16 
Continental

Steel road wheel 
size

4 x 18

Tire type/size

T115/85 R 18 96 
Pirelli

 

 

 

 

 

 

 

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