A radial tire (more properly, a radial-ply tire ) is a particular design of vehicular tire . In this design, the cord plies are arranged at 90 degrees to the direction of travel, or radially (from the center of the tire). Radial tire construction climbed to 100% market share in North America following Consumer Reports finding the superiority of the radial design in 1968, and were standard by 1976.
49-565: The Pirelli Cup was an annual friendly football tournament sponsored by the Pirelli Tyre company . The competition was started in 1996 as a single 90-minute friendly match between Pirelli-sponsored Internazionale and another invited team. Since 1996, 14 editions of the one-match tournament have been held. The latest edition of the competition was held in 2010 in Baltimore , featuring Inter Milan and Manchester City . The match ended 3–0 as Inter won
98-583: A 100-watt amplifier, a 100-millimetre (3.9 in) mid-woofer, a 25-millimetre (0.98 in) tweeter and also offers Bluetooth 4.0 with AptX for wireless connectivity. IXOOST is the manufacturer of P Zero Sound speaker, which majorly manufactures Motorsports-themed audio systems. The wheel-shaped speaker costs €2400, which is equivalent to about $ 2,800. Radial tyre The first radial tire designs were patented in 1914 by G. H. Hamilton and T. Sloper -patent № 467 filed in London , and in 1916 by Arthur W. Savage ,
147-432: A major investment decision regarding retooling for the radial tire, following the 1973 oil crisis . Despite heavy criticism at the time, Pilliod invested heavily in new factories and tooling to build the radial tire. Today, only Goodyear, Cooper , Titan, and Specialty Tires of America remain independent among US tire manufacturers, and the radial has practically replaced all other construction methods for automobile tires on
196-434: A market capitalisation of $ 6.69 billion. On May 29, 2024 Silk Road Fund began the total sale of its shareholding. On May 30, 2024, the share price fell as a result of the sale of the entire stake of Silk Road Fund. While Tronchetti Provera's Camfin strengthened its shareholding together with other Italian investors. Pirelli shareholders as of December 2022: The list of Pirelli Board of Directors: The Pirelli Calendar
245-623: A new road cycling tyre range, P ZERO Velo. In September 2017, the company announced its intentions to sell up to 40 per cent of its equity capital in an initial public offering as it plans to return to the Milan stock exchange in October. In March 2019 Pirelli announced a new range of mountain biking tyres, called Scorpion. In 2021, Pirelli introduced 18-inch tyres for the new aerodynamic and technical changes for 2022 in Formula One . As of May 2024, Pirelli has
294-491: A slick, but with a radial construction for the Monte Carlo Rally winning works Stratos. Radial technology is now the standard design for essentially all automotive tires. Bias tires are still used on trailers due to their weight carrying ability and resistance to swaying when towed. For aircraft, the transition is happening more slowly, as tires are certified along with the airframe . A radial has less material in
343-524: A subsidiary of PT Astra International for the construction of a motorcycle tyre plant with a total investment of $ 120 million. 60 per cent of shares will be held by Pirelli. Pirelli hoped to strengthen its presence in the largest motorcycle market in the world, Southeast Asia which has 250 million motorcycles. In July 2018, Pirelli launched a Formula One wheel-shaped Bluetooth speaker, P Zero Sound. The Bluetooth speaker measures 330-millimetre (12.9 in) in diameter, weighs 9.5 kg (21 pounds) and has
392-625: A tire manufacturer (1915–1919), firearm designer and inventor in San Diego, CA - U.S. patent 1,203,910 . No actual products were created. Michelin in France designed, developed, patented, and commercialized the radial tire. The first Michelin X radial tire for cars was developed in 1946 by Michelin researcher Marius Mignol. There is no evidence that the former accountant turned researcher Mignol had knowledge of Hamilton or Savage's earlier work when he began his experiments in 1941. Michelin owned
441-514: A tyre manufacturing company. In the past, it had been involved in fashion and operated in renewable energy and sustainable mobility . On 4 October 2017, Pirelli returned to the Milan Stock Exchange after focusing its business on pure consumer products (tyres for car, motorcycles, and bicycles) and related services, and separating the business of industrial tyre. Pirelli's eponymous calendar has been published since 1964, and has featured
490-431: Is due to end after the 2027 Formula One World Championship. The Italian tyre manufacturer introduced a colour coding system to help identify the tyre compounds used by drivers during races. Each compound has its own colour, which appears on the sidewalls of the tyre. Since the 2019 season, Pirelli has used three colours to identify its dry-weather P Zero tyres: white for hard, yellow for medium, and red for soft. As well as
539-456: Is nothing without control" was the well-known slogan of Pirelli Tyre Company, and was featured in numerous television and print advertisements. Pirelli is the long-serving main sponsor of Italian football club Inter Milan , having sponsored the Italian team since the 1995–96 season . Pirelli has a history of sponsoring football teams. Pirelli is well known for its long-term primary sponsorship of
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#1732858098971588-616: Is present in Europe, the Asia-Pacific, Latin America, North America, and the post-Soviet states , operating commercially in over 160 countries. It has 19 manufacturing sites, across 13 countries, and a network of around 14,600 distributors and retailers. In 2015, China National Chemical Corp. Ltd. ( ChemChina ) took controlling interest of Pirelli; with the Chinese state-owned company agreeing to maintain
637-458: Is published annually, featuring actresses and fashion models. The calendar also features the work of fashion photographers, including Richard Avedon , Peter Lindbergh , Annie Leibovitz , and Patrick Demarchelier . The Pirelli Internet ional Award is given annually for the best international multimedia involving the communication of science and technology conducted entirely on the Internet. "Power
686-518: The 2018 French Grand Prix . The company was the title sponsor of the Pirelli World Challenge from 2011 to 2018. Pirelli supported rally with their FIA Pirelli Star Driver program as an initiative to support young rally drivers. It was the sole supplier in the top tier of World Rally Championship in 2008–2010, and is now a co-supplier with Michelin . Since its first involvement in WRC in 1973,
735-409: The heat buildup in the tire . By comparison, radial tires lay all of the cord plies at 90 degrees to the direction of travel (that is, across the tire from lip to lip). This design avoids having the plies rub against each other as the tire flexes, reducing the tire's rolling friction. This allows vehicles with radial tires to achieve better fuel economy than with bias-ply tires. It also accounts for
784-519: The "wide radial tyre ", upon a request from the Lancia rally racing team for a tyre strong enough to withstand the power of the new Lancia Stratos . At that time, racing tyres were either slick tyres made with the cross ply technique (very wide tyres with a reduced sidewall height), or radial tyres , which were too narrow to withstand the Stratos' power and did not provide enough grip. Both were unusable for
833-692: The 35th America's Cup (2017). Pirelli sponsored Alpine World Ski Championship and Ice Hockey World Championship IIHF from 2017 to 2021. The company is also sponsor of the Italian Ski Team and of the Swiss Ski Team. Pirelli also was a sponsor of the Los Angeles Dodgers of Major League Baseball from 2014 to 2020. Pirelli was the official tyre partner and supplier of the World Rally Championship from 2008 to 2010 until
882-467: The Formula One tyres were introduced for the 2017 season. The most obvious visual difference was an increase of width by 25%, both front and rear, increasing from 245-mm to 305-mm at the front and 325-mm to 405-mm at the rear. The actual rim size remained unchanged from the traditional 13 inches. The faster cornering speeds as a result of this change imposed significantly increased loads on the tyres. Pirelli
931-616: The Italian football club Inter Milan between 1995 and 2021. Pirelli previously appeared as a sponsor on the shirts of the Maltese football club Valletta for a short time. In reference to Brazil striker Ronaldo ’s usual goal celebration of both arms outstretched, Pirelli ran a 1998 commercial in which he replaced the figure of Christ from the Christ the Redeemer statue that towers over his home city of Rio de Janeiro while in an Inter Milan strip. It
980-870: The Lancia Stratos, as the radials were destroyed within 10 km, and the slicks too stiff. Lancia asked Pirelli for a solution, and in 1975 Pirelli created a wide tyre with a reduced sidewall height like a slick but with a radial structure. Subsequently, Porsche started using the same tyres with the Porsche 911 Turbo . In 1988, Pirelli acquired the Armstrong Rubber Company, which was headquartered in New Haven, Connecticut , US for $ 190 million. In 2000, Pirelli sold its terrestrial fibre optic cables business to Cisco and its optical components operations to Corning , for 5 billion euro. It invested, through Olimpia, part of
1029-507: The Pirelli Rigid inflatable Boat . They have models ranging from 30 to 50 feet, including small tenders (X and J Models). Their most recent and popular collaboration has been with German Luxury Car Tuner Mansory . The new collaboration has been showcased to the public at the 2024 Cannes Boat Show and 2024 Genoa Boat Show . In April 2012, Pirelli & C. SpA signed a joint venture agreement with Indonesian counterpart PT Astra Autoparts
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#17328580989711078-408: The aim of making the races more exciting and entertaining. However, the brief from the sport's organisers has changed over the years, as the cars themselves evolved with the introduction of the turbo hybrid era in 2014. Pirelli has faced controversy on a number of occasions in Formula One, especially during the 2013 British Grand Prix, which featured multiple tyre failures. Pirelli subsequently changed
1127-458: The company withdrew to focus on its Formula One commitments. Pirelli returned to the championship in 2014 , albeit only partnering tyres for a few private teams as Michelin was the major tyre partner and supplier. Pirelli stepped up their involvement in the championship when they signed a deal to supply tyres to all Junior WRC participants, with its champions receiving a Ford Fiesta R5 with free tyres, fuel and free rally registration package for
1176-470: The company's past and to promote business culture as an integral part of Italy's national cultural assets. In March 2015, it was announced that Pirelli shareholders had accepted a €7.1 billion bid from ChemChina, together with Camfin and LTI, for the company. The transaction was completed and the company was delisted in November 2015. In May 2017, it was announced that Pirelli returns to the world of cycling with
1225-431: The construction of the tyres to prevent further incidents, switching to Kevlar belts. At the 2015 Belgian Grand Prix, a tyre on Sebastian Vettel's Ferrari suffered from a blowout at 320 km/h (200 mph). Immediately after the race Pirelli claimed that excessive wear caused the blowout but following a more detailed analysis, the company said that in fact, a cut had caused the tyre failure. A number of major changes to
1274-658: The contributions of many famous photographers over the years such as Helmut Newton , Steve McCurry , Peter Lindbergh , Richard Avedon , Bruce Weber , Herb Rits , and Annie Leibovitz . The company's US-based headquarters are located in Rome, Georgia . Founded in Milan in 1872 by Giovanni Battista Pirelli (1848–1932), the company initially specialised in rubber and derivative processes and also made scuba diving rebreathers and dry suits used by Italian frogmen during World War II. Thereafter, Pirelli's activities were primarily focused on
1323-490: The control tyre supply in the British Superbike Championship from 2008 until at least 2010. Pirelli officially replaces Dunlop as the sole tire supplier for Moto3 and Moto2 starting in 2024 . This was announced by Dorna Sports via the official MotoGP website. The Pirelli and Dorna contract has a duration of three seasons. Pirelli has partnered with Italian Boat Manufacture Sacs Tecnorib Spa to create
1372-409: The cords in the tire to assume an S-shape from bead to bead. The angle under the tread, the crown angle, stretched down to about 36 degrees. In the sidewall region the angle was 45 degrees, and in the bead it remained at 60 degrees. The low crown angle gave rigidity to support the tread and the high sidewall angle gave comfort. To increase strength, the manufacturer would increase the number of plies, and
1421-402: The dry-weather slick tyres, there are two wet-weather grooved tyres: green for the intermediate and blue for the full wet. These tyres are branded Cinturato, a name that dates back to the 1950s. At the start of Pirelli's Formula One tenure in 2011, the company was given the technically challenging task of designing tyres that degraded rapidly in order to promote more pit stops and overtaking, with
1470-412: The leading automaker Citroën , so it was quickly able to introduce its new design, including on the new 1948 Citroën 2CV model. In 1952, Michelin developed a radial truck tire. Because of its significant advantages in durability and fuel economy, this technology spread quickly in Europe and Asia in the 1950s and 1960s. In 1968, Consumer Reports , an influential American magazine, acknowledged
1519-465: The manufacturer won 181 events, and produced 25 WRC Driver Champions including Colin McRae (1995), Petter Solberg (2003), Sebastien Loeb (2008–2010). Pirelli would again become the sole tyre supplier in all three tiers in 2021 . Pirelli has also been a sponsor of rally and the late gymkhana driver Ken Block 's Hoonigan Racing Division since 2010. Pirelli was sponsor of Emirates Team New Zealand in
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1568-401: The market. Sam Gibara, who headed Goodyear from 1996 to 2003, has noted that without the action of Pilliod, Goodyear "wouldn't be around today." In 1974, Pirelli developed the wide radial tire on a request of the Lancia rally racing team for a tire to handle the power of the new Lancia Stratos and in the succeeding year, Pirelli introduced a wide tire with a reduced sidewall height like
1617-575: The next season's World Rally Championship-2 . Pirelli subsequently returned full time to the WRC since 2021 season. Pirelli was also partnered Grand-Am Rolex Sports Car Series from 2008 until 2010 before being replaced by Continental AG in 2011. The company has been the official supplier of the GT World Challenge America since 2011 and the GT World Challenge Europe Endurance Cup since 2013. Pirelli has been
1666-432: The past, the fabric was built up on a flat steel drum, with the cords at angles of about +60 and −60 degrees from the direction of travel, so they criss-crossed over each other. They were called cross ply or bias ply tires. The plies were turned up around the steel wire beads and the combined tread/sidewall applied. The green (uncured) tire was loaded over a curing bladder and shaped into the mold. This shaping process caused
1715-402: The production of tyre and cables (for energy and telecommunications ). In 2005, Pirelli sold its cable division to Goldman Sachs , which changed the new group's name to Prysmian . In the 1950s, Alberto Pirelli commissioned the building of a skyscraper, Pirelli Tower , in the same Milanese area that housed the very first Pirelli factory during the 19th century. In 1974, Pirelli invented
1764-577: The resulting liquidity to become a majority shareholder in Telecom Italia in 2001, maintaining this position until 2007. In 2002 the company started a range of Pirelli-branded clothing, watches and eyewear. In 2005, Pirelli sold its Cables, Energy Systems and Telecommunications assets to Goldman Sachs and the newly formed company was named Prysmian . In the same year, 2005, Pirelli opened its first tyre production plant in Shandong province, China . This
1813-552: The same tread width as before, but diameter has increased from 660 millimetres to 720 millimetres. The sidewall height is also reduced to give the tyres a more modern low-profile look. Pirelli is the only allowed tyre brand in the FIM Superbike World Championship since 2007 (along with its support classes, such as the Supersport World Championship ). Pirelli has also been awarded the contract for
1862-494: The sidewall, so it weighs less, runs cooler and lasts longer. For smaller planes, bias tires afford more stability at higher speeds and have stronger sidewalls. A series of plies of cord reinforces a tire. Without this, a tire would be flexible and weak. The network of cords that gives the tire strength and shape is called the carcass. Since the 1960s, all common tires have a carcass of cords of polyester, steel, or other textile materials, inlaid with several layers of rubber. In
1911-417: The slightly "low on air" (bulging) look that radial tire sidewalls have, especially when compared to bias-ply tires. With only radial cords, a radial tire would not be sufficiently rigid at the contact with the ground. To add further stiffness, the entire tire is surrounded by additional belts oriented closer to the direction of travel, but usually at some "spiral" angle. These belts can be made of steel (hence
1960-500: The sole tyre supplier in Formula One since 2011 following Bridgestone 's decision to withdraw from the role at the end of 2010 . Pirelli previously competed in Formula One from 1950 – 1958 , 1981 – 1986 and 1989 – 1991 . Pirelli also supplies tyres for the FIA Formula 2 Championship (formerly GP2 Series ), FIA Formula 3 Championship (formerly GP3 Series) and F1 Academy , that form the feeder series to Formula One. Pirelli's deal
2009-501: The superiority of the radial tire design, documenting its longer tread life, better steering characteristics, and less rolling resistance, which improves fuel economy . In 1970, Ford Motor Company produced the first American-made vehicle with radial tires as standard equipment, Michelin tires fitted to the Continental Mark III . In 1974, Charles J. Pilliod, Jr. , the new CEO of Goodyear Tire and Rubber Company , faced
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2058-399: The term steel-belted radial), polyester , or Aramid fibers such as Twaron or Kevlar . In this way, low radial tires separate the tire carcass into two separate systems: Each system can then be individually optimized for best performance. Radial tires have different characteristics of springiness from those of bias-ply tires , and a different degree of slip while steering. A benefit
2107-725: The title sponsor of the new ground. This was because the new stadium, named Pirelli Stadium lies next to the Pirelli factory in Burton-upon-Trent , Staffordshire , England. In 2009, Pirelli became the title sponsor of the Chinese Super League (CSL), China's top-tier football league. In 2012, the company became a major sponsor of the Russian Cup . Pirelli is the event title sponsor of the Spanish and Hungarian Grands Prix and sponsored
2156-474: The trophy. Below is the participation by club listed, grouped by country. Pirelli Pirelli & C. S.p.A. is an Italian multinational tyre manufacturer based in the city of Milan , Italy. The company, which has been listed on the Borsa Italiana since 1922, is the 6th-largest tyre manufacturer, and is focused on the consumer production of tyres for cars, motorcycles and bicycles. It
2205-558: The tyre company's ownership structure until 2023. Pirelli has been sponsoring sport competitions since 1907 and is the exclusive tyre partner and supplier for the Grand-Am Rolex Sports Car Series for 2008–2010, FIA Formula One World Championship for 2011–present and for the FIM World Superbike Championship . Pirelli's headquarters are located in Milan's Bicocca district . Pirelli is now solely
2254-426: Was consequently asked to produce tyres with less degradation that were more resistant to overheating, for the fastest cars in Formula One history. A far-reaching alteration to the Formula One technical regulations for 2022, covering every aspect of the car, prompted another significant change to the tyres. With an imminent move to 18-inch rims after more than 50 years of the 13-inch size, Pirelli's 2022 tyres maintain
2303-523: Was controversial with the Catholic Church. Pirelli's sponsorship of football teams is not limited to Europe, South America is a key market and as a result, successful clubs have also been sponsored by the tyre company. The Brazilian team Palmeiras , Uruguayan team Peñarol and Argentinian side Vélez Sársfield all had Pirelli as a shirt sponsor. When English football club Burton Albion Football Club built their new stadium in 2005, Pirelli became
2352-414: Was that cars could now be made lighter because they would not have to make up for the deficiencies of bias-ply tires. However, motorists were not accustomed to the feel, hence the suspension systems of cars had to be modified. Ford Motor Company engineer Jack Bajer experimented in the 1960s on a Ford Falcon , by giving it less tight steering, and adding both isolators to the drive shaft and bushings to
2401-476: Was the beginning of the group's production complex in the country. In 2006, Pirelli chose Slatina for its first tyre production plant in Romania , expanding the facility in 2011. In 2010, Pirelli completed its conversion to a pure tyre company by selling Pirelli Broadband Solutions and spinning off the real estate assets of Pirelli Re. Fondazione Pirelli was established in the same year to safeguard and celebrate
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