Tire Care
-
FUel Efficiency
Save amounts of fuel for your business. -
Maximizing TIre Life
Take care of your truck tire lifespan. -
Did you know
Maximize your knowledge about tire trucks. -
Commercial Tire Basics
Understand the Specifications.
A starting point to learn more about tires, especially relating to trucks and busses. Discover how to understand tire specifications, the difference between tube and tubeless tires, and more.
Contact Us2 Common Standard Tire Sizes
-
ANominal Section Width (mm)
-
BNominal Aspect Ratio
-
CRadial Structure Code
-
DNominal Rim Diameter (in)
-
E154/150M
154 - Load Index (Single)
150 - Load Index (Dual)
M - Speed Rating -
FPly Rating
-
GTubeless Tire
-
HNominal Section Width (mm)
-
INominal Aspect Ratio
-
JRadial Structure Code
-
KNominal Rim Diameter (in)
Appropriate Speed Rating with the corresponding Load Index
-
ANominal Section Width (in)
-
BRadial Structure Code
-
CNominal Aspect Ratio
-
E154/150M
154 - Load Index (Single)
150 - Load Index (Dual)
M - Speed Rating -
FPly Rating
-
GTubeless Tire
-
GRegroovable Indicator
-
IPattern Name
-
JBelt Winding Direction
-
KTire Rolling Direction
The table below lists the appropriate speed rating with the corresponding load index
Load Index
LI | kg |
---|---|
115 | 1215 |
116 | 1250 |
117 | 1285 |
118 | 1320 |
119 | 1360 |
120 | 1400 |
121 | 1450 |
122 | 1500 |
123 | 1550 |
124 | 1600 |
LI | kg |
---|---|
125 | 1650 |
126 | 1700 |
127 | 1750 |
128 | 1800 |
129 | 1850 |
130 | 1900 |
131 | 1950 |
132 | 2000 |
133 | 2060 |
134 | 2120 |
LI | kg |
---|---|
135 | 2180 |
136 | 2240 |
137 | 2300 |
138 | 2360 |
139 | 2430 |
140 | 2500 |
141 | 2575 |
142 | 2650 |
143 | 2725 |
144 | 2800 |
LI | kg |
---|---|
145 | 2900 |
146 | 3000 |
147 | 3075 |
148 | 3150 |
149 | 3250 |
150 | 3350 |
151 | 3450 |
152 | 3550 |
153 | 3650 |
154 | 3750 |
LI | kg |
---|---|
155 | 3875 |
156 | 4000 |
157 | 4125 |
158 | 4250 |
159 | 4375 |
160 | 4500 |
161 | 4625 |
162 | 4750 |
163 | 4875 |
164 | 5000 |
LI | kg |
---|---|
165 | 3875 |
166 | 4000 |
167 | 4125 |
168 | 4250 |
169 | 4375 |
170 | 4500 |
171 | 4625 |
172 | 4750 |
173 | 4875 |
174 | 5000 |
LI | kg |
---|---|
175 | 6900 |
176 | 7100 |
177 | 7300 |
Speed Rating
Tire Dimensions
-
SSection Width
-
HSection Height
-
RFree Radius
-
RLoaded Radius
-
EDistance Between Dual Tires
-
DFree Diameter (R x 2)
-
QRim Diameter
Load index is subject to the driving speed, tire structure, and tire mounting position (single or dual). The US TRA, Korea KS, EU ETRTO, and Japan JIS standards all follow the same load index.
The table below shows the smallest index under cold tire conditions.
Air pressure can be appropriately increased under the following conditions
-
AIncrease speed and load requirements
-
BFor better handling
However, the increased air pressure should not exceed the specified maximum load, 20 psi, nor exceed the maximum load and air pressure required by the rim.
Over inflation will lead to tire blowout which affects driving safety and increases operating costs!
Steps by steps guide of how to properly repair your truck tire.
Steps by steps guide of how to properly repair your truck tire.
Notes:
Tires must be installed on specified rims. The rims cannot be deformed, rusted, non-circular, cracked, unevenly welded, loosed, or sharp-edged.
Only tires with the same specification, structure, brand, size, ply rating, and pattern can be installed on the same axle.
Install directional tire so that the rotation direction is consistent with the vehicle’s traveling direction.
When replacing new tires, it is recommended to replace all the tires on vehicle or at least on the same axle.
Use special tools or machinery to install and remove tube tires.
During tire inflation, the operator should not stand to the side of the tire.
Steps by steps guide of how to Remove and Install your Tubeless Tire Truck.
Tubeless Tire Features & Basic Components
-
AOuter diameter of a tubeless tire is the same as a tube tire, so the gear ratio will not change before or after a tire change
-
BRim diameter is 2 inches wider with better heat dissipation and lower temperatures
-
CLoad capacity remains the same with a lighter rim
Advantages of Tubeless Tires: 10% Lighter Than Tube Tires
- Lower sidewall for more accurate and safer steering and handling
- Fewer components with lower friction and rolling resistance for better fuel efficiency
- Superior heat dissipation and lower temperatures for longer tire life
- Better contact area with uniform wear for longer tire life
- Less components and lighter weight for reduced fuel consumption
Your Table Guide of Tire Specifications for your Tire Truck
Bias Tire | Radial Tire |
---|---|
7.00-16 | 7.00R16 |
7.50-16 | 7.50R16 |
8.25-16 | 8.25R16 |
7.50-20 | 7.50R20 |
8.25-20 | 8.25R20 |
9.00-20 | 9.00R20 |
10.00-20 | 10.00R20 |
11.00-20 | 11.00R20 |
12.00-20 | 12.00R20 |
90 Series | 80 Series | 75 Series | 70 Series | 65 Series |
---|---|---|---|---|
8R17.5 | / | 205/75R17.5 | / | / |
8.5R17.5 | / | 215/75R17.5 | / | / |
9.5R17.5 | / | 235/75R17.5 | 245/70R19.5 | / |
8R22.5 | / | / | / | / |
9R22.5 | / | / | / | / |
10R22.5 | / | / | 255/70R22.5 | / |
11R22.5 | 275/80R22.5 | 295/75R22.5 | 275/70R22.5 | / |
12R22.5 | 295/80R22.5 | / | / | 385/65R22.5 |
13R22.5 | 315/80R22.5 | / | 315/70R22.5 | 425/65R22.5 |
Disclaimer
This Specification Guidance Table for Replacement is only for reference. Giti does not assume any responsibility for it. When replacing tires, please consult with your local distributor and take into consideration the rim, tire specification, load, handling, and other factors.
Giti Tires are built to last for long distances. Here you can find more ways to care for your truck tire lifespan, with an emphasis on tire pressure, tire rotation, retreading, and other factors that affect wear.
Contact UsWhy Should We Perform Regular Tire Pressure Checks?
Importance of Regular Tire Pressure Inspection
- Tire Pressure will naturally decrease over time.
- New tire will decrease 70 kPa (0.7 kgf/cm2) within a month.
Dangers of Low Tire Pressure
-
Abnormal Shoulder Wear On Both Sides
-
Deformed Sidewalls (Steel Wire Detaches From Rubber)
-
Sidewalls Easily Broken
-
Increased Fuel Consumption
Tire Damage
- Decreased buffering capacity and shock resistance leads to more broken steel wires or tire blowouts
- Smaller contact area between tire and the ground leads to faster wear, especially in the center, resulting in shorter tire life
- Increased skidding
-
Road Damage
- High tire pressure without overloading, will damage the road due to the effects of force and counterforce
-
Rim Damage
- High tire pressure causes greater vibration which leads to rim damage
Vehicle Component Damage
- High tire pressure increases vibrations and damages vehicle components, while proper tire pressure has better buffering capacity
What is the Purpose of Tire Rotation?
- Shoulder and bead failure becomes a concern when transporting heavy cargo. Proper tire rotation can extend tire life
- Partial Wear at a Fixed Position
Inner and Outer Shoulder Wear
Center Wear
Area with irregular wear occurs
Tire Rotation Method
-
1
First Rotation: Perform 2-3 rotations until the tires are completely worn
-
2
Second Rotation: If possible, rotate tires between different axles for better results.When using dual tires, the inner tires usually bear more weight and absorb more heat from the brake drums.
Key Points of Tire Rotation
- Change the rolling direction
- Rotate between front wheels, trailer wheels, and drive axels
- Tire rotation frequency should be higher during the initial stage of wear
Effects of Tire Rotation
Example of a Standard Long Distance Truck Driver
A driver uses 3 test vehicles to perform tire rotation respectively at wear rates of 20%, 40%, and 60%. After analyzing the results, it is concluded that the optimal rotation approach is to have the load between 100-130% with a speed of 80km/h.
Total Life * Cost/km | ||
---|---|---|
Optimal Position | 122 | 84 |
Fixed Position | 100 | 100 |
Includes the extended tire life and cost for 2 tire rotations
Example of Overloading
180-320% 40-50km/h (actual tire life before failure)
Actual Tire Life | Wear Rate | Tire Life Index | |
---|---|---|---|
Rotated Position | 49,700km | 82% | 260% |
Fixed Position | 19,100km | 37% | 100% |
Tire Pressure
-
40
-
70
-
90
-
100
TEmperature
-
100
-
70
-
100
-
100
Average Speed
-
125
-
100
-
75
-
50
Vehicle Load
-
160
-
100
-
70
-
40
Trailer Wheel Position
-
65
-
100
-
35
Road Conditions
-
100
-
80
-
60
Retread tire mainly refers to retreading the tire crown.
Price Index
Price Index
Price Index
and Life Index
Price indices are only provided as examples.
Standard Rule
A
-
60-
Price Index -
10=
Price Index -
50Retread Cost
Index
B
Under normal conditions, retreaded Giti tires can reach 80% of the mileage on new tires.
C
-
100x
Mileage and
Life Index -
.80=
-
80Retreaded Tire
Mileage and
Life Index
Saving even small amounts of fuel can provide a big benefit to your fleet’s bottom line! Find out some ways to improve mileage without sacrificing the performance of your truck tires.
Contact UsVehicle Driving Resistance Includes
1
Inertia
When a vehicle changes motion, it must overcome the inertia force which depends on the value of the vehicle acceleration and weight.
2
Gravity
This is an inevitable natural force.
3
Air Resistance
This is primarily related to the vehicle’s aerodynamics, such as streamlined body design.
4
Mechanical Friction
This friction is inevitable and comes from the mechanical parts of the vehicle such as engine gear box, bearings, and brakes.
5
Tire Rolling Resistance – Driving Resistance That Is Ignored
Most people tend to ignore the 5th driving resistance – tire rolling resistance. However, it is actually the 3rd largest resistance that affects fuel consumption. When a truck in good condition is traveling at a speed of 80 km/h on a paved road, under standard load and pressure, about 26% of its power is used to overcome the tires’ rolling resistance. Therefore, the effect of tire rolling resistance on fuel consumption cannot be ignored.
Vehicles need to consume fuel to overcome driving resistance since fuel is the only power source. Therefore, Driving Resistance mus be reduced in order to save fuel.
Silica helps lower rolling resistance
Increase driving distance by about 6-7%
Low Rolling Resistance Tire
Standard Tire
With each rotation of the wheel, the tire becomes deformed due to the load. Since both the rubber and internal air are flexible, the tire will be subject to repeated compression and expansion when rolling. All these processes need to consume a certain amount of energy. Part of which is converted into heat and increases the tire temperature. This loss of energy is known as tire rolling resistance.
Silica helps lower rolling resistance
Advanced formula, structure, and pattern design lowers rolling resistance.
Ordinary Tire Formula
-
Ordinary Rubber Structure
-
Ordinary Rubber heats up when car br is motion
Low Rolling Resistance Tire Formula
-
Dispersed Carbon Black Structure
-
When travelling on the road, a tire with silicon and nano-sized carbon black reduces heat which in turns reduces rolling resistance.
Maintain Proper Tire Pressure
Maintain the pressure of your tire to avoid danger.
Maintain Proper Wheel Pressure
Avoid overloading to increase tire lifeand improve fuel efficiency
Giti Tire provides diverse tire solutions to meet the needs of various road conditions and driving habits for the domestic commercial vehicle market.
Find out some interesting, more advanced truck tire facts that can maximize your knowledge and driving success. These include facts on overloading hazards, wide base tires, nitrogen, and others.
Contact UsTechnology Identification and Benefits
Latest eco-friendly materials are used to reduce damage to the environment
Minimizes damage to the environment for better environmental protection
Lowers rolling resistance for better fuel efficiency
Minimizes stone retention and tire damage
Effectively reinforces bead to reduce bead failure
Optimized tire casing contour for uniform force distribution and better wear resistance
New high-strength casing material for stronger casing
Giti Tire’s retreadable casing structure design provides higher durability and efficiency
All Giti tires are regroovable and designed utilizing thicker groove rubber with a stronger rubber formula to extend tire life
Regroovable depth indicator is located inside the tread wear indicator for regrooving purposes
Several places are marked with TWI on the tread base (TWI located on the shoulder) to remind the driver of the tread condition and when to consider regrooving and retreading
During retreading, the reference rotation direction of the buffing machine helps prevent belt layers from damage and ensures quality retreads
Excellent wear resistance for higher mileage when traveling long distance at high speeds
Tread is more resistant to punctures, cuts, and chunks
Unique series of number for convenient identification and after sales claims with quality guarantee
Designated products included in the Nationwide Warranty Program brings you convenient claim settlement services
- Fuel Efficient, Eco-Friendly
- Higher Mileage
- Comfortable Drive
- Lower Cost
- Better Durability
- Improve Operational Efficiency
- Extend Tire Life
- Enhanced Safety
- Outstanding Service
Overloading will greatly reduce tire life
- 10%
- 20%
- 50%
- 100%
- 20%
- 35%
- 59%
- 85%
Gain a better understanding of the actual load of domestic truck tires to ensure proper tire pressure. See the Giti Tire Technical Book or ask your Giti Tire representative for more information.
Tire Specification | Tire Pressure (kPa) |
1000 | 1100 | 1200 | 1300 | 1400 | 1500 |
---|---|---|---|---|---|---|---|
10.00R20 | Single Tire Dual Tire |
3500 4500 |
4250 5000 |
5000 5500 |
6000 |
||
11.00R20 | Single Tire Dual Tire |
3500 5000 |
4500 5400 |
5500 5800 |
6200 |
6600 |
7000 |
12.00R20 | Single Tire Dual Tire |
4000 5500 |
5000 6000 |
6000 6500 |
7000 |
7500 |
8000 |
Over inflation will lead to tire blowout which affects driving safety and increases operating costs!
The Difference between Tube and Tubeless TIres
What Is a Tube Tire?
- Tire Consists of 3 Components: tire casing, tube, and flap
- Wheel consists of 5 components and is more susceptible to damage or failure due to the number of components
What Is a Tubeless Tire?
- Tubeless and tube tires have the same outer diameter so the gear ratio will remain the same before and after a tire change
- Rim diameter is 2 inches wider and has better heat dissipation; tire + rim = lower tire temperature
- Carries the same load but with a lighter rim
Tube vs Tubeless: Which One Is Better?
Wide Base Tires Are Safer, More Economical, and More Eco-Friendly
Utilizes radial, optimal aspect ratio, and tubeless techniques to optimize tire performance and replace regular dual tires.
5 Advantages
Lighter Vehicle Weight for Higher Load Capability
- Wide base tires are lighter than dual tires (i.e. lighter by 30% for 1-1-3 vehicle models)
- Reduced tire weight can be converted into load capability to bring more economic benefits (i.e. more than RMB 20,000 worth of benefits can be calculated per vehicle per year for 1-1-3 vehicle models)
Better Fuel Efficiency Lowers Cost
- Giti Tire’s tests in Yunnan have proven that wide base tires can save more than 4% fuel when compared to dual tires
Wider Wheelbase and Lower Center of Gravity for Safer and Easier Handling
- Wheelbase of single tires is about 4% more than that of dual tires
- Wider wheelbase and lower center of gravity improve vehicle stability for safer and easier handling
Easier Installation for Higher Operational Efficiency
- Using the 1-1-3 vehicle model as example, installing 6 single tires on the trailer wheel position is equivalent to installing 12 dual tires which greatly reduces both installation and maintenance time
- When installing dual tires, tires with different air pressure on the same axle will lead to uneven load and wear which affects operational efficiency
Better Heat Dissipation Enhances Tire Life
- Wide base tires have two fewer sidewalls than dual tires, generates less heat, enhances heat dissipation, increases tire wear resistance, and improves tire life
What is Nitrogen?
- Nitrogen (N2) is colorless and tasteless
- Has low thermal conductivity
- Nitrogen molecules are larger than oxygen molecules
- Nitrogen is stable and does not easily react with other substances at room temperature
Advantages of Nitrogen Filled Tires:
-
Nitrogen’s low thermal conductivity decelerates heat accumulation and significantly reduces tire blowouts
-
Nitrogen molecules are larger than oxygen molecules and penetrate the tire wall slower than air
-
Does not contain water or other substances which effectively inhibits the tire and rim from slowly oxidizing and corroding
-
Nitrogen slows tire pressure loss, decreases tire temperature, and reduces rolling resistance caused by insufficient air pressure and high tire temperatures