As an avid cyclist, the idea of riding without worrying about a flat tire is very appealing. Bridgestone hopes to make my dreams come true.
Bridgestone Corp., together with Bridgestone Cycle Co., Ltd. will advance feasibility studies and hopes to offer an airless bicycle tire by 2019.
Photo: Bridgestone Corporation
In 2008, 68% of all passenger cars assembled worldwide came equipped with a full-size spare tire, but by 2015 that number had fallen to just 40% as automakers sought to reduce vehicle weight and save space. By 2020, the number of cars with full-size spares is forecast to fall to 36%. Notch Consulting has updated a multi-client market research report that examines the systems that are replacing the spare tire in new cars: Prospects for Extended Mobility Systems: Run-Flat Tires, Tire Repair Kits & Self-Sealing Tires in OEM Passenger Car Markets. This 78-page report includes 17 tables detailing demand for each of these three products in OEM passenger car markets by region and by customer, as well as average pricing, market share by supplier, and profiles of leading suppliers. The report provides data in units for all years from 2008 through 2016, with forecasts for all years from 2017 through 2020, as well as 2025. Data on run-flat tires cover all years 2002 through 2020, as well as 2025. Contact Notch at email@example.com for more information or to order.
On January 28, Pirelli unveiled a new all-season replacement tire for Europe at a launch event in Sicily. The Cinturato All-Season is available in 15-, 16-, and 17-inch sizes and is designed for cars with small-to-medium engines, particularly in temperate climates and urban environments. This tire represents Pirelli’s first full foray into an all-season tire under the Pirelli name. In another first, Pirelli is offering a puncture-resistant version of the tire incorporating Pirelli’s “Seal Inside” self-sealing technology. These tires incorporate a sealant layer that plugs holes in the tread caused by foreign objects. According to Pirelli’s research, 89% of drivers in their target market said they would pay a premium for self-sealing technology.
Notch Consulting examined the market potential for self-sealing tires as well as run flat tires and tire repair kits in a report published in April 2014, Prospects for Extended Mobility Systems: Run-Flat Tires, Tire Repair Kits & Self-Sealing Tires in OEM Passenger Car Markets.
The Wall Street Journal (subscription required) reports survey results indicating that the majority of teens do not know how to change a tire, let alone basic tire maintenance.
A new survey, released Tuesday, finds 52% of U.S. teens ranging from 15 to 17 years old don’t know how to replace a tire. A total of 44% don’t know how to examine the tire tread depth and 32% can’t figure out how to check tire pressure.
Notch Consulting published a report earlier this year that focused on the ongoing trend to eliminate the spare tire from many new cars, as well as the systems that will replace them. Information on this report, Prospects for Extended Mobility Systems: Run-Flat Tires, Tire Repair Kits & Self-Sealing Tires in OEM Passenger Car Markets, is available here.
In 2008, 69% of all passenger cars assembled worldwide came equipped with a full-size spare tire, but by 2012 that number had fallen to just 48% as automakers sought to reduce vehicle weight and save space. By 2020, the number of cars with full-size spares is forecast to fall to 36%. Notch Consulting has published a new multi-client market research report that examines the systems that are replacing the spare tire in new cars: Prospects for Extended Mobility Systems: Run-Flat Tires, Tire Repair Kits & Self-Sealing Tires in OEM Passenger Car Markets. This 77-page report includes 17 tables detailing demand for each of these three products in OEM passenger car markets by region and by customer, as well as average pricing, market share by supplier, and profiles of leading suppliers. The report provides demand in units for all years from 2008 through 2013, as well as forecasts for all years from 2014 through 2020. Data on run-flat tires covers all years 2002 through 2020 and include both OEM and replacement demand. Contact Notch at firstname.lastname@example.org for more information or to order.
Tire Business has details on the launch of a new line of self-supporting run-flat tires from Bridgestone Americas. The company launched the new line, called DriveGuard, on April 3 at the Circuit of the Americas near Austin during a ride-and-drive event for dealers and journalists. The launch is interesting for several reasons. First, the new tires are intended as mass-market replacement tires for use on coupes, sedans and wagons with tire pressure monitoring systems (TPMS) but that were not originally equipped with run-flat tires. Previously, the vast majority of replacement sales for run-flats were for cars in which run-flats were factory-installed. Secondly, Bridgestone is marketing the run-flats very heavily to women, whom Bridgestone believes will take a natural interest in the tire’s safety and convenience advantages. Bridgestone has enlisted actress Julie Bowen from Modern Family as its official spokesperson for Driveguard and is spending heavily on advertising on female-skewing shows such as The Bachelor and Nashville. DriveGuard tires are available in the U.S. and Canada and come with a 50,000- to 60,000-mile treadwear warranty. They are available in 32 sizes in 15- to 19-inch rim diameters and 35 to 65 series. Here is a video of the launch presentation by Robert Saul, product planning manager of Bridgestone Americas.
Rubber & Plastics News (subscription required) has details on a new consumer satisfaction survey from J.D. Power that indicates that owners of 2011- and 2012-model year cars in the US equipped with run-flat tires are less satisfied with their tires than owners of cars with standard tires. The findings are based on input from about 2,150 owners of cars with run-flats, about 7% of all respondents. Run-flats are installed primarily on luxury and performance sports cars and, while both groups were less satisfied with run-flats, the dissatisfaction was more pronounced among sports car drivers:
The difference in satisfaction level among owners of luxury vehicles vs. others was only about 1.5 percent, J.D. Power’s data show, while the difference among sports car owners was more than 9 percent.
The main complaint about run-flats was that they need to be replaced prematurely. According to the survey, 31% of customers with OE run-flat tires had to replace at least one tire in the first two years of ownership, compared to 19% for those whose vehicle was equipped with standard tires.
On May 17, Bridgestone announced the launch of its new Run-Flat Technology tire (RFT), the POTENZA S001 RFT, for the replacement market in the Middle East and Africa. The tires will be available beginning this summer in 16 different sizes, ranging from 16 to 19 inch diameters. Run-Flat Technology tires are designed to provide 80 km distance at 80 km per hour speed after deflation.
POTENZA S001 RFT tires are the latest generation of Bridgestone’s Run-Flat Technology tires, which were first launched in the early 1980s.
The main features of the new POTENZA S001 RFT are:
— The use of new side-wall reinforced rubber and COOLING FIN technology, both of which control heat, creating a comfortable ride comparable with POTENZA S001 (non RFT).
— It delivers high dimensional dry and wet performance like POTENZA S001.
— It is recommended for customers who demand Run-Flat Technology tires for a smoother ride.
Stuff (via the Sydney Morning Herald) has a piece on Michelin’s ongoing work on a self-repairing tires, an area in which Continental also is active.
The self-repairing tyre can be driven over nails without losing pressure, thanks to a new rubber compound that immediately plugs any holes in the tread.
The tyre is not the first to have self-healing properties – Continental launched similar technology in 2009 – but Michelin says early versions of self-repairing tyres struggled to deliver the same performance as undamaged tyres, with the compound sinking to the bottom of the tyre if a car was parked for any length of time. This would create vibrations and affect rolling resistance, increasing fuel use.
Tires based on the Michelin technology are not yet available, but the company insists that the tires will be superior to run-flats because they can be driven at normal speeds if they’re punctured and offer better ride comfort. Like run-flats, self-repairing tires offer the benefits of allowing carmakers to remove the spare, thus saving weight and space, and reducing vehicle weight.
Bob Ulrich at Modern Tire Dealer notes something that also caught my eye. More and more cars are eliminating their spare tire to save weight and space, but many are replacing them with inflator kits (and cell phones) rather than run-flats to compensate.
With the announcement that the 2011 Chevy Cruze is foregoing a spare tire in order to improve gas mileage comes a few comments about run-flat tires.
Did the Cruze come with them? I found it hard to believe it would, given its less-than-ultimate-driving-machine stature.
The answer? No, run-flat tires were not original equipment on the Cruze. It comes with an on-board tire inflator kit.
By shedding 26 pounds of tire and jacking hardware, the Cruze has an EPA-estimated 42 miles per gallon on the highway, “the best highway mileage of any non-hybrid, gasoline-fueled, compact available in the U.S. market,” according to General Motors Corp.