Rubber Gets Tough
Charles Goodyear discovers, by accident, that heating rubber with sulfur makes it strong, springy and weatherproof instead of sticky and unreliable. The process is called vulcanization, and every tire since has depended on it.
The tire has never stopped evolving. Every generation is safer, better performing and more sustainable than the last, for every vehicle, in every condition, everywhere people drive.
Before the car and before the highway, a stubborn idea takes shape.
Charles Goodyear discovers, by accident, that heating rubber with sulfur makes it strong, springy and weatherproof instead of sticky and unreliable. The process is called vulcanization, and every tire since has depended on it.
John Dunlop develops the first pneumatic, or air-filled, tire. For the first time a cushion of air sits between the wheel and the road.
Air-filled tires are fitted to an automobile for the first time. The car and the pneumatic tire begin their long partnership here.
The pieces of today’s tire fall into place, one breakthrough at a time.
The first patterned treads appear. The grooves in the tread channel water away so the rubber keeps better contact with the pavement in any weather. Tread design is born and sets up more than a century of innovative tread patterns for every kind of vehicle, road and climate.
The first tubeless automobile tire is patented. It would take more than 40 years before tubeless tires are manufactured and sold widely.
Adding carbon black to rubber turns tires from their natural off-white to black and multiplies how long a tread lasts. By the end of World War I nearly every tire on the road is black, and nearly every tire still is.
Layers of fabric cord replace stiff woven canvas inside the tire. Tires run cooler, flex better and last far longer. Every modern tire still uses this internal architecture.
Balloon tires arrive. Wider and running at lower pressure, they absorb bumps and put more rubber on the road, improving comfort and control at the same time.
World War II cuts off natural rubber supplies, and American industry scales synthetic rubber from lab experiment to mass production in a few short years. Nearly every tire today still blends natural and synthetic rubber.
The modern tire arrives and safety becomes law.
Tubeless tire technology finally reaches production. In older inner tube tires, a puncture could burst the tube and cause a sudden blowout. Without the inner tube, air leaks from punctures more slowly, giving drivers time to pull over safely.
The radial tire is patented and commercialized, with cord plies arranged at 90 degrees to the direction of travel. The tire lasts longer, grips better and saves fuel. Many engineers still call it the biggest single leap in tire history.
The first bias-belted tires reach the market, adding belts of puncture-resistant material such as fiberglass or steel under the tread. Tires get tougher and hold their shape at highway speed.
Federal Motor Vehicle Safety Standards take effect in the United States, setting national requirements every tire must meet before it can be sold.
American tire engineers help NASA put wheels on the Moon. The lunar rover crosses the surface on woven wire-mesh tires designed for a world with no air to fill them.
The first all-season tire arrives, built to handle rain, light snow and summer heat with one set of tires, year-round. For most American drivers, the twice-yearly tire swap becomes a thing of the past.
Uniform Tire Quality Grading begins. Under new federal standards, treadwear, traction and temperature ratings are molded onto every sidewall using a common testing method, giving drivers a way to compare tires side by side for the first time.
Tires start solving problems before drivers ever notice them.
Run-flat tires emerge, engineered to keep going for up to 50 miles after a puncture. A roadside emergency becomes a safe drive to the shop.
Silica-based tread compounds solve one of tire engineering’s oldest tradeoffs by improving wet grip and fuel economy at the same time. Safer stopping and better mileage, from the same chemistry.
The TREAD Act passes Congress, strengthening tire recall systems and requiring new vehicles to warn drivers with a dashboard light when tire pressure runs significantly low.
Tire pressure monitoring systems become standard on every new vehicle sold in the U.S. That horseshoe-shaped warning light on your dashboard now watches your tire pressure on every drive.
Cleaner materials, smarter tires and new kinds of vehicles.
Tire manufacturers champion provisions in the FAST Act directing federal regulators to set minimum standards for tire fuel efficiency and wet traction. The industry advocated for a nationwide baseline to protect consumers and reward manufacturers already building to a higher standard.
Sensors embedded in tires begin reporting pressure, temperature and wear in real time, helping drivers and fleets catch small problems before they become roadside ones.
Manufacturers develop natural rubber from guayule, a desert shrub native to the American Southwest, and also from dandelions. Plant-based oils from soybeans and sunflowers replace some petroleum-based oils in tread compounds too.
Electric vehicles are heavier, quieter and quicker off the line, so tires are evolving again. New designs bring tougher construction, lower noise and compounds tuned to stretch every mile of range.
Airless tire concepts replace air pressure with rigid spokes, often built from recycled materials. These design concepts point toward a future with no flat tires.