Every journey you take starts long before a tire touches the road. Modern tire technology blends chemistry, physics, and engineering to deliver the comfort, performance, efficiency, reliability, and safety drivers rely on every day. Whether you’re driving kids to school, responding to an emergency, or delivering goods to keep communities running, every ride is powered by tire manufacturing.
Tires are engineered to work as one with your vehicle, helping keep you in control in every condition. During production, every tire is carefully inspected, examined and extensively tested to evaluate performance against rigorous safety standards. With proper care, tires can last from 40,000 to 80,000 miles, supporting countless safe journeys along the way. Here’s how it all begins.
Planning and Design
Many tires are custom designed to meet the specific needs of each vehicle. The process begins with a computer that converts the vehicle’s unique needs into precise tire specifications. A prototype is then built and tested to ensure it delivers the performance, safety, and reliability drivers depend on. This custom-design process takes months of testing, inspection, and quality checks by both the tire makers and the vehicle manufacturers. Only after proving it can handle real-world conditions does production begin, supporting millions of journeys ahead.
Manufacturing
As many as 200 raw materials come together using chemistry, physics, and engineering to create a tire to help keep you safe and comfortable. Every component serves a purpose, and every step matters.
Step One: Material Selection
The production process begins with selecting several types of rubber along with special oils, carbon black, pigments, antioxidants, silica, and other additives, each chosen to deliver specific performance characteristics. Separate compounds are used for different parts of the tire so it can grip the road, carry weight, and resist wear.
Step One: Material Selection
The production process begins with selecting several types of rubber along with special oils, carbon black, pigments, antioxidants, silica, and other additives, each chosen to deliver specific performance characteristics. Separate compounds are used for different parts of the tire so it can grip the road, carry weight, and resist wear.
Step Two: Mixing the Materials
A machine called a Banbury mixer combines the raw materials for each compound into a homogenized batch of black material with a gum-like consistency. The mixing process is computer-controlled to ensure uniformity from tire-to-tire. The compounded materials are then sent to machines for further processing into the sidewalls, treads, and other parts of the tire.
Step Three: Assembling the Layers
Assembly then begins, layer by layer, component by component. The first layer is the inner liner, a rubber resistant to air and moisture that keeps tires properly inflated. Next come the body plies and belts, often made from polyester and steel, giving the tire the strength to carry weight while maintaining the flexibility needed for a safe and comfortable ride.
The belts are cut to the precise angle and size the tire engineer specifies to deliver the desired ride and handling characteristics. Bronze-coated strands of steel wire, fashioned into two hoops, are embedded into the sidewall of the tire to form the bead, which ensures an airtight fit with the rim of the wheel. The tread and sidewalls are then positioned over the belt and body plies, and all the parts are pressed firmly together. The end result at this stage is called a “green” or uncured tire.
Step Four: Curing
The final step is to cure the tire. The “green” tire is placed and inflated inside a mold, pressing against the form to create the tread pattern and the tire identification information on the sidewall. Then it is heated to more than 300 degrees Fahrenheit for 12 to 15 minutes. This curing process vulcanizes the rubber, bonding all the components together. Every tire is then inspected, with sample tires randomly pulled from the line for additional testing. Some are x-rayed, some are cut apart to look for flaws, and others are run on test wheels or road-tested to evaluate handling, mileage, and traction performance.
From designing to curing, this process reflects the tire industry’s commitment to driving progress, making sure every journey you take starts and ends safely with a tire built to perform.
TIRE FACT: This 12 to 15 minute curing process is for passenger and light truck tires only; off-road and large tires may take up to a day to cure because of their size!