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Major tyre companies including Bridgestone Corporation, Cooper Tire & Rubber Co and Goodyear Tire and Rubber Co have sued the US government in order to block the introduction of a new TPMS regulation. The companies, joined by trade and consumer groups, claimed that the car and light truck regulation was inadequate to ensure safety.
In this column SA Treads editor, Liana Shaw, explains why nitrogen inflation could offer little-known benefits to retreaders.
It is probably no secret by now that I am a fan of nitrogen in tyres. I have spoken with too many fleet operators who swear by the cost-saving benefits of running on nitrogen, not to be a believer. I have also been using nitrogen in my own car tyres for over a year and enjoy not having to check tyre pressures every time I fill up. Unlike the inconvenience of running on air, which tends to escape from tyres at a rapid rate, the composition of nitrogen gas – which is characterized by larger molecules – substantially reduces the rate of emission. Then take the heat factor, long acknowledged as a tyre’s biggest enemy. Being an inert gas, tyres inflated with nitrogen run cooler, thereby prolonging tyre life. So far, so good. But could nitrogen’s properties and unique features extend further so as to be able to render valuable assistance to the retreader? The experts seem to think so.
(Akron/Tire Review) In an unusual split from its Big 3 brethren, General Motors did not take the opportunity to stand with Ford and DaimlerChrysler on the subject of tyre aging. GM, in a statement issued earlier this week, said it would not endorse the other automakers’ position that tyres six years old or older should be replaced.
Following RoadSafe’s launch of a campaign supporting more frequent tyre changing, the influential fleet business has cautiously welcomed the initiative, while warning of soaring costs. Research has shown that wet stopping distances can vary up to 10 metres between 1.6 and 3 millimetre tread depths.
The AA has been ranked as the top roadside rescue and recovery service in the annual JD Power 2005 Roadside Assistance Study. The survey records the opinions of over 23,000 motorists to create an index of customer satisfaction based on three main components – timing, performance of the patrol, and performance of the call handler.
Pirelli & C SpA has sold its Energy and Telecom Cables and Systems business to Goldman Sachs for 1.3 billion euros. So what will the investment company get for its money? In 2004 the cable business turned over more than 3.2 billion euros, with an operating income (EBIT) of more than 110 million. The transaction includes intellectual property rights and Pirelli brand licensing for two years. While the business itself employs 12,000 people in its 52 plants around the world.
In the UK the implementation of nitrogen inflation is still a relatively new topic. But when ATS Euromaster began a nitrogen inflation trial at 25 of its UK outlets earlier this year, it stirred interest about the subject within the market.
(Akron/Tire Review) For the second time this year, Michelin North America (MNA) is raising prices on some of its commercial tyre product lines. Prices on Michelin and BFGoodrich branded replacement medium truck tyres will jump three to five per cent, MNA said. The increase will hit direct-billed fleet accounts as of 1 July, but won’t hit dealer accounts until 1 September, the company said.
Prices on OTR tyres sold in North America will increase by an average of 7 per cent, from the same date. Prices on replacement market agricultural tyres sold in Canada will go up five per cent on average, while agricultural tyre prices for US customers will increase by an average of eight per cent, also from 1 July.
Michelin recently suffered the theft of one of its tyres during a British Superbike Championship event. A police investigation showed that the theft of one of its most technologically advanced tyres appeared to have been professionally carried out.
In an effort to safeguard its industrial secrets, Michelin is reconsidering its involvement in competitive race series’ outside the MotoGP World Championship.
“The UK aftermarket industry must play a key role in bringing the findings of new research into tyre performance to motorists’ attention” – this was RoadSafe’s message at its recent ‘safety in the wet demonstration,’ a message it successfully managed to impress on guests.
MIRA (Motor Industry Research Association) and RoadSafe welcomed both journalists and ‘opinion formers,’ including representatives from the AA, police and RoSPA, to the association’s test grounds in Nuneaton last month, to host comparative tyre tread depth tests and to promote the industry’s 3mm tyre replacement cause.
Guests were offered the opportunity to take part in a practical demonstration that aimed to further impact the tyre safety message. Four cars, each with one of the specified tread depths, 8mm, 4mm, 3mm or 1.6mm were available for guests to complete wet braking tests. The results were strikingly clear, the lower the tread depth the longer and further it took to stop the vehicle. A simple exercise, a simple message; yet despite the simplicity a large percentage of motorists drive on illegal levels of tyre tread. What the 3mm working group says is that it’s up to the UK tyre industry to do something about this and promote change.
Fernando Alonso snatched victory from McLaren’s Kimi Raikonnen on the last lap of the European Grand Prix. The Renault driver was able to extend his championship lead to 32 points after the Finnish driver crashed out due to the suspension failure caused by the flatspotting of his front right tyre.
Williams’ Nick Heidfeld and Ferrari’s Rubens Barichello joined Alonso on the podium, followed by the Red Bull of David Coulthard, the Ferrari of Michael Schumacher, Renault’s Giancarlo Fisichella and McLaren’s Juan Pablo Montoya. Jarno Trulli filled the last point scoring postion.
Alliance has introduced 40 new forestry tyre designs to its existing ranges in an attempt to strengthen its position in the segment. The tyres feature reinforced steel and include flotation forestry tyres for harvesters, agro-forestry R1 tyres for combined applications in forestry and agriculture, and LS forestry tyres for logger skidders.
The new tyres were developed in co-operation with machinery manufacturers, under severe conditions, said David Shahar, head of R&D for Alliance. “Forestry tyres should be able to drive effortlessly in difficult terrain, without puncture and costly down time,” Shahar explained.
(Akron/Tire Review) TIA expressed its disappointment that the National Highway traffic Safety Administration (NHTSA) turned down the RMA’s petition to establish recommended cold inflation pressure using a tyre pressure reserve.
TIA had supported RMA’s petition, in which the association asked that NHTSA include in its TPMS regulations a stipulation that a reserve tyre pressure sufficient to allow tyres to carry the maximum load of a vehicle be included in the threshold for a TPMS trigger point.
Last month saw the official European launch of Fulda’s new Exelero. But it didn’t stop there. The manufacturer not only presented a new UHP tyre to European press and dealers, but also a new car, the Fulda Maybach Exelero.
Sales of the Fulda brand reached 9 million pieces in 2004, of which approximately 5 million were sold in Germany and the remainder in other parts of Europe. The factory, based in the German city Fulda, produced 7 million tyres in 2004, but they weren’t all for the Fulda brand. The plant focuses on high end products, including runflats, UHP tyres and products for the SUV sector, it also produces tyres for other Goodyear brands.
But back to the much anticipated ‘Fulda Maybach Exelero’ project. Just imagine a vehicle that combines the elegance and quality of a high-end limousine with the powerful agility of a sports coupé. Picture a vehicle with a basic weight of over 2.66 tonnes and the dimensions of a light truck that can achieve a maximum speed of over 350 km/h. Now visualise an ultra-high performance tyre that not only copes with the aforementioned weight, the dimensions and the speed, but also makes the vehicle safe, stable and comfortable. Does such a vehicle and tyre exist? It does now.
Other manufacturers develop a tyre for a car, Fulda reversed he norm and developed a car for the tyres. This is a symbol, according to Fulda’s MD Bernd Hoffmann, that his brand is unique from all others – in the market as well as in the Goodyear family.
Fulda has been making car tyres for the past 100 years, and has tested and marketed its products on several special vehicles throughout this time. Luxury high-speed buses, a series of show trucks, racing cars, all have been used to test and advertise the manufacturers tyres. In the 1930s the streamlined Maybach SW38 was used. The car could conduct tyre tests at speeds of over 200 km/h. Unfortunately it did not last for long, the test car which was designed in 1938 and produced in 1939 disappeared during the war years and was never seen again.
Sixty-six years later Fulda has introduced a high-tech tyre to the market. The most extreme dimension in the tyre’s portfolio is the 315/25 ZR 23, licensed for speeds of more than 350 km/h. As a series tyre, and not a racing tyre, a high-speed vehicle was needed for the launch and not a racing car. Lucky then that one of the most exclusive German vehicle makes was revived a few years ago and a joint project was organised, just like in the old days.
The contacts were made thanks to René Staud, a world-class car photographer and an outstanding ‘networker’ at DaimlerChrysler and Fulda Reifen. An agreement was reached following several discussions with Leon Hustinx, Maybach’s director sales and marketing – Maybach would build a car for Fulda. The objective was to position the vehicle as an ambassador for the new ultra high performance tyre line Exelero.
The project had quite a team behind it. Two independent design professors and four of their students, together with the design professionals from DaimlerChrysler and Fulda worked on the car. After nine months of design proposals one of the students’ designs was chosen.
Transforming a limousine, the Maybach 57 (the basis for the Exelero) into a coupé is an extremely complicated process. When considering the engine alternatives, it soon became clear that the basic twelve-cylinder engine used in the Maybach limousines would not achieve the desired maximum speed of around 350 km/h despite the Biturbo charger. Here, the Mercedes Car Group leapt into the breach. The engine specialists in Untertürkheim, the place where all basic engines are developed, provided some much needed support to the project. After much tweaking of the Maybach type 12 engine, the cubic capacity was increased from 5.6 to 5.9 litres and the turbo charge optimised. The result was convincing: on the test bed almost 700 hp and at least 1,000 newton metres of torque were recorded, sufficient to achieve the maximum target speed of 350 km/h.
The final test measurements at the end of April/beginning of May 2005 on the high speed Motodrom Nardo confirmed the team’s hard work and success, the car reached a top speed of 351.45 km/h – a world record for limousines on standard tyres. The development of the project, from the initial Fulda concept to the delivery of the Maybach Exelero sports coupé, in just 25 months also achieved another world record.
Delivering to the discerning consumer
State-of-the-art technology, comfort, convenience, and all at a good price – the end consumer knows what it wants and is becoming increasingly discerning. And because of this those industries that support the vehicle manufacturers are increasingly being called upon to respond to manufacturing trends towards more capacity, higher horse power and better performance characteristics by providing technically compatible, performance-orientated product components. This includes the tyre industry. Predictions for the ultra high performance tyre segment show a 60 per cent sales increase for V, W and Y speed categories between 2003 and 2008.
Fulda’s new Exelero is a prime example of the tyre technology currently being placed in the path of today’s quality-sensitive consumer group. The product is a result of equally intensive and complex research and development claims the manufacturer. The motivation behind such R&D was always to enhance the performance of existing summer tyre products, a goal Fulda believes it has achieved.
Refined and perfected for the requirements of sporty drivers, the characteristics of the new Exelero have impressed Germany’s Technical Board of Control (TÜV Süd). The product was awarded the TÜV test symbol following detailed tyre tests and a quality audit of Fulda’s production processes. In doing so the TÜV Süd has, for the first time, recognised the research and development undertaken by a tyre manufacturer on the basis of an independent testing and certification process.
The Exelero is also the result of intensive market research. Customer surveys conducted by Fulda Reifen revealed that the majority of motorists want tyres with optimised braking characteristics on wet road surfaces, good handling, and low noise build-up. As a result of this research a special wet grip compound was developed, and its low elasticity improves grip level providing shorter braking distances, especially on wet road surfaces. In principle a tyre tread with low elasticity produces a more effective grip on the road surface than a compound with higher elasticity and the contact between the tyre and road surface is guaranteed for a longer period.
In addition, the new high performance carcass offers improved handling, on both dry and wet road surfaces. Developed to meet the requirements of high performance and sports cars, the tyre manufacturer has placed special emphasis on the tyres’ high stability and response behaviour. The carcass is less susceptible to deformation during heavy braking manoeuvres and on sharp bends and thus not only improves the grip but also the vehicle’s steering behaviour.
With the newly developed and so-called unique ‘DualShift Method’ the engineers have been able to clearly reduce the Exelero’s noise emissions. The ‘DualShift Method’ consists of two elements; the special configuration of various tread block sizes in the shoulder section and centre leads to an audible reduction in the sound frequency peaks. Six circumferential longitudinal grooves are also individually set, to further improve driving comfort and low noise build-up.
Fulda’s new UHP product is currently being rolled out to the trade and will eventually be available in 33 sizes and 39 versions ranging from 15 to 23 inches (55 to 25 series), 25 sizes are already available in the UK. Fulda is putting 13 of the sizes into series production for the first time.
The Tire Industry Association (TIA) has submitted a petition for reconsideration with the National Highway Traffic Safety Administration (NHTSA) regarding the final rule on Tire Pressure Monitoring Systems (TPMSs).
“NHTSA has made what TIA believes to be a huge mistake and is moving backwards on the timeframe in which the telltale must illuminate upon sensing underinflation in a tyre,” states the petition. “NHTSA’s original proposal was that the telltale must go off within 10 minutes of sensing a problem with a tyre’s inflation. The final rule has moved backwards to 20 minutes. TIA is very concerned that this additional 10 minutes will allow an underinflated tyre to further deflate, overheat and potentially fail.”
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