Get Customer Information and Reporting Safety Defects -> Tire Information (U.S.A.) Guide for Mazda CX-30 SUV 2020

Customer Information and Reporting Safety Defects

Tire Information (U.S.A.)

14.Max. permissible inﬂation pressure

Tire Labeling

P215/65R15 95H is an example of a

tire size and load index rating. Here is

an explanation of the various

components of that tire size and load

index rating. Note that the tire size and

load index rating may be diﬀerent from

the example.

Tire Labeling

▼

Federal law requires tire manufacturers

to place standardized information on

the sidewall of all tires. This

information identiﬁes and describes

the fundamental characteristics of the

tire and also provides a tire

identiﬁcation number for safety

standard certiﬁcation and in case of a

recall.

Indicates a tire that may be installed on

cars, SUVs, minivans and light trucks as

designated by the Tire and Rim

Association (T&RA).

Information on Passenger Vehicle

Tires

▼

NOTE

Please refer to the sample below.

If your tire size does not begin with a

letter this may mean it is designated by

either ETRTO (European Tire and Rim

Technical Organization) or JATMA

(Japan Tire Manufacturing

Association).

215

“215” is the nominal width of the tire

in millimeters. This three-digit number

gives the width in millimeters of the

tire from sidewall edge to sidewall

edge. In general, the larger the

1. SAFETY WARNING

2. Passenger car tire

3. Nominal width of tire in millimeters

4. Ratio of height to width (aspect

ratio)

number, the wider the tire.

“65” is the aspect ratio. This two-digit

number indicates the tire's ratio of

height to width.

5. Radial

6. Run-ﬂat tire

7. Rim diameter code

8. TIN: U.S. DOT tire identiﬁcation

number

“R” is the tire construction symbol. R

indicates “Radial ply construction”.

9. Load index & speed symbol

10.Severe snow conditions

11.Tire ply composition and materials

used

“15” is the wheel rim diameter in

inches.

12.Max. load rating

13.Tread wear, traction and

temperature grades

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the 45st week of 1997. After 2000 the

numbers go to four digits. For

example, the number 2102 means the

21th week of 2002. The other

numbers are marketing codes used at

the manufacturer's discretion. This

information is used to contact

consumers if a tire defect requires a

recall.

“95” is the Load Index. This two-or

three-digit number indicates how

much weight each tire can support.

“H” is the speed rating. The speed

rating denotes the maximum speed for

which the use of the tire is rated.

Tire Ply Composition and Materials

Used

Letter Rating

Speed Rating

99 mph

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 tire materials,

which include steel, nylon, polyester,

and other.

106 mph

112 mph

118 mph

124 mph

130 mph

149 mph

Maximum Load Rating

168 mph

This number indicates the maximum

load in kilograms and pounds that can

be carried by the tire.

186 mph

For tires with a maximum speed capability over

149 mph, tire manufacturers sometimes use the

letters ZR. For tires with a maximum speed

capability over 186 mph, tire manufacturers

always use the letters ZR.

Maximum Permissible Inﬂation

Pressure

This number is the greatest amount of

air pressure that should ever be put in

the tire under normal driving

conditions.

M+S or M/S: Mud and Snow

AT: All Terrain.

AS: All Season. The “M+S” or “M/S”

indicates that the tire has some

functional use in mud and snow.

Tread Wear, Traction and Temperature

Grades

Tread wear: The tread wear grade is a

comparative rating based on the wear

rate of the tire when tested under

controlled conditions on a speciﬁed

government test course. For example,

a tire graded 150 would wear one and

one-half (1 1/2) times as well on the

government course as a tire graded

100.

U.S. DOT Tire Identiﬁcation Number

(TIN)

This begins with the letters “DOT”

which indicates 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 manufactured.

For example, the numbers 457 means

Traction: The traction grades, from

highest to lowest are AA, A, B, and C.

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Customer Information and Reporting Safety Defects

Tire Information (U.S.A.)

The grades represent the tire's ability

to stop on wet pavement as measured

under controlled conditions on

Information on Temporary Tires

▼

Please refer to the sample below.

speciﬁed government test surfaces of

asphalt and concrete. A tire marked C

may have poor traction performance.

Temperature: The temperature grades

are A (the highest), B and C,

representing the tire's resistance to the

generation of heat and its ability to

dissipate heat when tested under

controlled conditions on a speciﬁed

indoor laboratory test wheel.

Snow Tires

1. Temporary tires

In some heavy snow areas, local

2. Nominal width of tire in millimeters

3. Ratio of height to width (aspect

ratio)

governments may require true snow

tires, those with very deeply cut tread.

These tires should only be used in pairs

or placed on all four wheels. Make

sure you purchase snow tires that are

the same size and construction type as

the other tires on your vehicle.

4. Diagonal

5. Rim diameter code

6. Load index & speed symbol

T115/70D16 90M is an example of a

tire size and load index rating. Here is

an explanation of the various

components of that tire size and load

index rating. Note that the tire size and

load index rating may be diﬀerent from

the example.

SAFETY WARNING

The following safety warning appears

on the tire's sidewall.

SERIOUS INJURY MAY RESULT FROM:



EXPLOSION OF TIRE/RIM ASSEMBLY

DUE TO IMPROPER

MOUNTING-MATCH TIRE

DIAMETER TO RIM DIAMETER;

NEVER EXCEED 40 psi (275 kPa) TO

SEAT BEADS-ONLY SPECIALLY

TRAINED PERSONS SHOULD

MOUNT TIRES.

Indicates a tire that may be installed on

cars, SUVs, minivans and light trucks as

designated by the Tire and Rim

Association (T&RA).

115



TIRE FAILURE DUE TO

UNDER-INFLATION/

“115” is the nominal width of the tire

in millimeters. This three-digit number

gives the width in millimeters of the

tire from sidewall edge to sidewall

edge. In general, the larger the

OVERLOADING/DAMAGE-FOLLOW

OWNER'S MANUAL AND PLACARD

IN VEHICLE-FREQUENTLY CHECK

INFLATION PRESSURE AND INSPECT

FOR DAMAGE.

number, the wider the tire.

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Location of the Tire Label

(Placard)

“70” is the aspect ratio. This two-digit

number indicates the tire's ratio of

height to width.

Location of the Tire Label (Placard)

▼

You will ﬁnd the tire label containing

tire inﬂation pressure by tire size and

other important information on the

driver's side B-pillar or on the edge of

the driver's door frame.

“D” is the tire construction symbol. D

indicates “diagonal ply construction”.

“16” is the wheel rim diameter in

inches.

SAMPLE

“90” is the Load Index. This two-or

three-digit number indicates how

much weight each tire can support.

“M” is the speed rating. The speed

rating denotes the maximum speed for

which the use of the tire is rated.

Recommended Tire Inﬂation

Pressure

▼

On the tire label you will ﬁnd the

recommended tire inﬂation pressure in

both kPa and psi for the tires installed

as original equipment on the vehicle. It

is very important that the inﬂation

pressure of the tires on your vehicle is

maintained at the recommended

pressure. You should check the tire

pressure regularly to insure that the

proper inﬂation pressure is maintained.

Refer to Tires on page 9-7.

Letter Rating

Speed Rating

81 mph

NOTE

Tire pressures listed on the vehicle

placard or tire information label

indicate the recommended cold tire

inﬂation pressure, measured when the

tires are cold, after the vehicle has

been parked for at least 3 hours. As

you drive, the temperature in the tire

warms up, increasing the tire pressure.

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Customer Information and Reporting Safety Defects

Tire Information (U.S.A.)

NOTE

WARNING

Some spare tires require higher

inﬂation pressure.

Always check the tire inﬂation

pressures on a regular basis according

to the recommended tire inﬂation

pressure on the tire label and in

conjunction with the information in

this owner's manual:

8. Visually inspect the tires to make

sure there are no nails or other

objects embedded that could poke

a hole in the tire and cause an air

leak.

9. Check the sidewalls to make sure

there are no gouges, cuts, bulges,

cracks or other irregularities.

Driving your vehicle with

under-inﬂated tires is dangerous.

Under-inﬂation is the most common

cause of failures in any kind of tire and

may result in severe cracking, tread

separation or “blowout”, with

Glossary of Terms

▼

Tire Placard: A label indicating the OE

tire sizes, recommended inﬂation

pressure, and the maximum weight the

vehicle can carry.

Tire Identiﬁcation Number (TIN): A

number on the sidewall of each tire

providing information about the tire

brand and manufacturing plant, tire

size, and date of manufacture.

Inﬂation Pressure: A measure of the

amount of air in a tire.

kPa: Kilopascal, the metric unit for air

pressure.

psi: Pounds per square inch, the

English unit for air pressure.

B-pillar: The structural member at the

side of the vehicle behind the front

door.

Original Equipment (OE): Describes

components originally equipped on

the vehicle.

Vehicle Load Limit: The maximum

value of the combination weight of

occupants and cargo.

Bead Area of the Tire: Area of the tire

next to the rim.

Sidewall Area of the Tire: Area

between the bead area and the tread.

Tread Area of the Tire: Area on the

perimeter of the tire that contacts the

unexpected loss of vehicle control and

increased risk of injury. Under-inﬂation

increases sidewall ﬂexing and rolling

resistance, resulting in heat buildup

and internal damage to the tire. It

results in unnecessary tire stress,

irregular wear, loss of control and

accidents. A tire can lose up to half of

its air pressure and not appear to be

ﬂat!

It is impossible to determine whether

or not tires are properly inﬂated just by

looking at them.

Checking Tire Pressure

▼

1. When you check the air pressure,

make sure the tires are cold

―meaning they are not hot from

driving even a mile.

2. Remove the cap from the valve on

one tire.

3. Firmly press a tire gauge onto the

valve.

4. Add air to achieve recommended

air pressure.

5. If you overﬁll the tire, release air by

pushing on the metal stem in the

center of the valve. Then recheck

the pressure with your tire gauge.

6. Replace the valve cap.

7. Repeat with each tire, including the

spare.

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road when it's mounted on the

vehicle.

Tire Maintenance

▼

Seating capacity means the total

allowable number of vehicle

occupants. Seating capacity is

described on the tire label.

Improper or inadequate vehicle

maintenance can cause tires to wear

abnormally. Here are some important

maintenance points:

Production options weight is the

combination weight of installed regular

production options weighing over 2.3

kilograms in excess of the standard

items which they replace, and not

previously considered in the curb

weight or accessory weight, including

heavy duty brakes, ride levelers, roof

rack, heavy duty battery, and special

trim.

Tire Inﬂation Pressure

▼

Inspect all tire pressure monthly

(including the spare) when the tires are

cold. Maintain recommended

pressures for the best ride, top

handling, and minimum tire wear. Use

the pressures speciﬁed on the vehicle

tire information placard or tire label for

optimum service.

Tire Rotation

▼

Rim is the metal support (wheel) for a

tire or a tire and tube assembly upon

which the tire beads are seated.

To equalize tread wear, rotate the tires

every 16,000 km (10,000 miles) at the

latest or sooner if irregular wear

develops. Mazda recommends to

rotate every 8,000 km (5,000 miles) to

help increase tire life and distribute

wear more evenly.

1. Forward

Do not include (TEMPORARY USE

ONLY) spare tire in rotation.

Inspect the tires for uneven wear and

damage. Abnormal wear is usually

caused by one or a combination of the

following:



Incorrect tire pressure

8-27

Customer Information and Reporting Safety Defects

Tire Information (U.S.A.)



Improper wheel alignment

NOTE



Out-of-balance wheel

Tires degrade over time, even when

they are not being used on the road. It

is recommended that tires generally be

replaced when they are 6 years or

older. Heat caused by hot climates or

frequent high loading conditions can

accelerate the aging process. You

should replace the spare tire when you

replace the other road tires due to the

aging of the spare tire. The period in

which the tire was manufactured (both

week and year) is indicated by a 4-digit

number.



Severe braking

After rotation, inﬂate all tire pressures

to speciﬁcation (page 9-7) and

inspect the lug nuts for tightness.

CAUTION

Rotate unidirectional tires and radial

tires that have an asymmetrical tread

pattern or studs only from front to rear,

not from side to side. Tire performance

will be weakened if rotated from side

to side.

Refer to Tire Labeling on page 8-22.

Safety Practices

▼

Replacing a Tire

▼

The way you drive has a great deal to

do with your tire mileage and safety.

So cultivate good driving habits for

your own beneﬁt.

WARNING

Always use tires that are in good

condition:

Driving with worn tires is dangerous.

Reduced braking, steering, and

traction could result in an accident.



Observe posted speed limits and

drive at speeds that are safe for the

existing weather conditions



Avoid fast starts, stops and turns



Avoid potholes and objects on the

If a tire wears evenly, a wear indicator

will appear as a solid band across the

tread.

road



Do not run over curbs or hit the tire

against the curb when parking

Replace the tire when this happens.

CAUTION

If you feel a sudden vibration or ride

disturbance while driving or you

suspect your tire or vehicle has been

damaged, immediately reduce your

speed. Drive with caution until you can

safely pull oﬀ the road. Stop and

inspect the tire for damage. If the tire

is under-inﬂated or damaged, deﬂate

it, remove the tire and rim and replace

it with your spare tire. If you cannot

detect a cause, have the vehicle towed

to the nearest vehicle or tire dealer to

have the vehicle inspected.

1. New tread

2. Worn tread

3. Tread wear indicator

You should replace the tire before the

band crosses the entire tread.

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Overloading makes a vehicle harder to

drive and control. It also increases the

distance required for stopping. In cases

of serious overloading, brakes can fail

completely, particularly on steep

grades. The load a tire will carry safely

is a combination of the size of the tire,

its load range, and corresponding

inﬂation pressure.

Never overload the vehicle and always

observe the vehicle's weight ratings

from the vehicle's Safety Certiﬁcation

and Tire and Load Information labels.

Vehicle Loading

▼

WARNING

Do not tow a trailer with this vehicle:

Towing a trailer with this vehicle is

dangerous because it has not been

designed to tow a trailer and doing so

will aﬀect the drive system which could

result in vehicle damage.

This section will guide you in the

proper loading of your vehicle, to keep

your loaded vehicle weight within its

design rating capability. Properly

loading your vehicle will provide

maximum return of vehicle design

performance. Before loading your

vehicle, familiarize yourself with the

following terms for determining your

vehicle's weight ratings, from the

vehicle's Safety Certiﬁcation Label and

Tire and Load Information Label:

Base Curb Weight is the weight of the

vehicle including a full tank of fuel

and all standard equipment. It does

not include passengers, cargo, or

optional equipment.

Vehicle Curb Weight is the weight of

your new vehicle when you picked it

up from your dealer plus any

aftermarket equipment.

PAYLOAD

WARNING

Overloaded Vehicle:

Payload is the combination weight of

cargo and passengers that the vehicle

is designed to carry. The maximum

payload for your vehicle can be found

on the Tire and Load Information label

on the driver's door frame or door

pillar. Look for “THE COMBINATION

WEIGHT OF OCCUPANTS AND

Overloading a vehicle is dangerous.

The results of overloading can have

serious consequences in terms of

passenger safety. Too much weight on

a vehicle's suspension system can

cause spring or shock absorber failure,

brake failure, handling or steering

problems, irregular tire wear, tire

failure or other damage.

CARGO SHOULD NEVER EXCEED XXX

kg or XXX lbs” for your maximum

payload. The payload listed on the tire

label is the maximum payload for the

vehicle as built by the assembly plant.

If any aftermarket or dealer installed

equipment has been installed on the

vehicle, the weight of the equipment

must be subtracted from the payload

8-29

Customer Information and Reporting Safety Defects

Tire Information (U.S.A.)

listed on the tire label in order to be

accurate.

If the weight of the occupant increases,

the cargo weight limit decreases by

that much.

SAMPLE

GAW (Gross Axle Weight) is the total

weight placed on each axle (front and

rear) - including vehicle curb weight

and all payload.

GAWR (Gross Axle Weight Rating) is

the maximum allowable weight that

can be carried by a single axle (front or

rear). These numbers are shown on

the Safety Compliance Certiﬁcation

Label located on the driver's door

frame or door pillar. The total load on

each axle must never exceed its

GAWR.

CARGO

Cargo Weight includes all weight

added to the Base Curb Weight,

including cargo and optional

equipment.

GVW

The cargo weight limit decreases

depending on the number of vehicle

occupants. The cargo weight limit can

be calculated by subtracting the total

weight of the vehicle occupants from

the “combination weight of occupants

and cargo should never exceed” value

on the tire label.

GVW (Gross Vehicle Weight) is the

Vehicle Curb Weight + cargo +

passengers.

GVWR (Gross Vehicle Weight Rating)

is the maximum allowable weight of

the fully loaded vehicle (including all

options, equipment, passengers and

cargo). The GVWR is shown on the

Safety Compliance Certiﬁcation Label

located on the driver's door frame or

door pillar. The GVW must never

exceed the GVWR.

Examples: Based on a single occupant

weight of 68 kg (150 lbs), and a value

of 385 kg (849 lbs) for the

“combination weight of occupants and

cargo should never exceed”:

The cargo weight limit with one

occupant is 385 kg (849 lbs) － 68 kg

(150 lbs) = 317 kg (699 lbs)

SAMPLE

The cargo weight limit with two

occupants is 385 kg (849 lbs) － (68 ×

2) kg ( (150 × 2) lbs) = 249 kg (549

lbs)

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Do not use replacement tires with

lower load carrying capacities than the

originals because they may lower the

vehicle's GVWR and GAWR

limitations. Replacement tires with a

higher limit than the originals do not

increase the GVWR and GAWR

limitations.

WARNING

Never Exceed Axle Weight Rating

Limits:

Exceeding the Safety Certiﬁcation

Label axle weight rating limits is

dangerous and could result in death or

serious injury as a result of substandard

vehicle handling, performance, engine,

transmission and/or structural

damage, serious damage to the

vehicle, or loss of control.

Never exceed the GVWR or the GAWR

speciﬁed on the certiﬁcation label.

Always keep the vehicle within the axle

weight rating limits.

GCW

GCW (Gross Combination Weight) is

the weight of the loaded vehicle

(GVW).

GCWR (Gross Combination Weight

Rating) is the maximum allowable

weight of the vehicle - including all

cargo and passengers - that the vehicle

can handle without risking damage.

The GCW must never exceed the

GCWR.

WARNING

Never Exceed GVWR or GAWR

Speciﬁcations:

Exceeding the GVWR or the GAWR

speciﬁed on the certiﬁcation label is

dangerous. Exceeding any vehicle

rating limitation could result in a

serious accident, injury, or damage to

the vehicle.

8-31

Customer Information and Reporting Safety Defects

Tire Information (U.S.A.)

Steps for Determining the Correct Load Limit

▼

Steps for Determining Correct Load Limit-

(1) Locate the statement “The combined weight of occupants and cargo should

never exceed XXX kg or XXX lbs.” on your vehicle's placard.

(2) Determine the combined weight of the driver and passengers that will be riding

in your vehicle.

(3) Subtract the combined weight of the driver and passengers from XXX kg or XXX

lbs.

(4) The resulting ﬁgure equals the available amount of cargo and luggage load

capacity. For example, if the “XXX” amount equals 1400 lbs. and there will be

ﬁve 150 lb passengers in your vehicle, the amount of available cargo and

luggage load capacity is 650 lbs. (1400 － 750 (5 × 150) = 650 lbs.)

(5) Determine the combined weight of luggage and cargo being loaded on the

vehicle. That weight may not safely exceed the available cargo and luggage load

capacity calculated in Step 4.

(6) If your vehicle will be towing a trailer, load from your trailer will be transferred to

your vehicle. Consult this manual to determine how this reduces the available

cargo and luggage load capacity of your vehicle.

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Customer Information and Reporting Safety Defects -> Tire Information (U.S.A.) for Your Mazda CX-30 SUV 2020

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