Showing posts with label light-alloy. Show all posts

New light-alloy wheels from Mercedes-Benz Accessories: Into the spring on new wheels

By | Published Tuesday, 17 April 2012

High-sheen bichromatic wheels and large wheels up to size 53.34 cm (21-inch) continue to enjoy great popularity. Accordingly, Mercedes-Benz Accessories GmbH is expanding its range of these light-alloy wheels. Just in time for the changeover from winter to summer tyres, the new models are available for numerous model series. In all, the diverse product range from Mercedes-Benz Accessories currently comprises around 170 different wheel designs, including two models for the new Mercedes-Benz SL, that is available at Mercedes-Benz dealerships as of 31 March.

High-sheen bichromatic light-alloy wheels derive their additional appeal from the interesting contrast between the apparently bare metal surface and the painted areas. They lend the vehicle a yet more exclusive appearance and are considered by the designers at Mercedes-Benz to be more than just a passing fad. Accordingly, Mercedes-Benz Accessories GmbH is now extending its range of bichromatic wheels. The popular wheels in single-tone painted finish also remain available.

The trend towards larger wheels fitted flush with the outer body contours is also continuing in all categories of vehicle. This design style signals power, dynamism and driving stability. Mercedes-Benz Accessories GmbH also has new products to offer in this area – such as the 5-twin-spoke wheel in bichromatic design in size 53.34 cm (21-inch) for the M-Class.

For spring 2012, Mercedes-Benz Accessories is offering new light-alloy wheels for numerous vehicles including the following model series (situation as per March 2012):

SL-Class
incenio 5-spoke wheel, 45.7 cm (18-inch)
Surface finish: matt satin silver / high-sheen
Wheel size: 8.5J x 18 ET 35.5 (A231 401 2902 7x34)
Wheel size: 9.5J x 18 ET 47.5 (A231 401 3002 7x34)
incenio multi-spoke wheel, 48.3 cm (19-inch)
Surface finish: palladium silver / high-sheen
Wheel size: 8.5J x 19 ET 35.5 (A231 401 2702 7x19)
Wheel size: 9.5J x 19 ET 47.5 (A231 401 2802 7x19)

M-Class
incenio 5-twin-spoke wheel, 53.34 cm (21-inch)
Surface finish: Himalayas grey / high-sheen
Wheel size: 9J x 21 ET 53 (A166 401 2707 7x21)

GLK-Class
incenio 5-spoke wheel, 48.3 cm (19-inch)
Surface finish: tremolite metallic
Wheel size: 7.5J x 19 ET 47 (A204 401 8902 7x28)
Wheel size: 8.5J x 19 ET 52 (A204 401 9302 7x28)

C-Class
incenio 5-twin-spoke wheel, 45.7 cm (18-inch)
Surface finish: Himalayas grey
Wheel size: 7.5 J x 18 ET 47 (A204 401 9102 7756)
Wheel size: 8.5 J x 18 ET 54 (A204 4019 202 7756)

E-Class (Saloon and Estate)
incenio 5-twin-spoke wheel, 48.3 cm (19-inch)
Surface finish: Himalayas grey / high-sheen
Wheel size: 8.5J x 19 ET 48 (A212 401 4802 7x21)
Wheel size: 9.5J x 19 ET 48 (A212 401 4902 7x21)

E-Class (Coupé and Cabrio)
incenio 5-twin-spoke wheel, 48.3 cm (19-inch)
Surface finish: Himalayas grey / high-sheen
Wheel size: 8J x 19 8 ET 44 (A207 401 1902 7x21)
Wheel size: 8.5J x 19 ET 48 (A212 401 4802 7x21)

Highest quality standards

The same high safety standards apply to all the light-alloy wheels on offer – there are no differences in quality between the models belonging to the standard and optional equipment and the versions available from Mercedes-Benz Accessories. All wheels are required to meet the same high standards. Neither certification nor registration with the TÜV technical inspection authority are required when fitting the light-alloy wheels from Mercedes-Benz Accessories, as they all form part of the vehicle homologation. The customer always receives a product which is tailored perfectly to Mercedes-Benz vehicles: it supports their exemplary ride comfort and high driving dynamics and fulfils the high requirements of the design idiom, additionally combining high performance with an outstanding service life.

These merits result on the one hand from close collaboration between the vehicle development staff and the wheel development specialists. In order to win their Mercedes stars, wheels additionally have to pass a comprehensive test programme which goes well beyond the statutory licensing requirements for use in road traffic. This includes effective testing procedures geared towards the toughest service conditions encountered in real driving conditions, even extending to tests in cutting-edge x-ray systems and computer tomographs.

Care and handling tips

Even the best development programme, the most innovative production technology and a perfectly coordinated test programme are unable to influence how customers treat their vehicles, including the valuable light-alloy wheels. The manner in which wheels are handled continues to have a major influence on their value retention and the safety of the vehicle. Useful tips:

- Clean the winter/summer wheels thoroughly after changing in the spring/autumn, regardless of whether steel or light-alloy wheels are fitted

- Do not use aggressive cleaners. Products recommended by Mercedes-Benz are gentle agents which will clean the wheels effectively

- Do not clean with sharp or rough sponges

- Observe the specified wheel tightening torques. Wheel bolts which are too tight or too loose will damage the wheel in the long term

- Do not oil or grease wheel bolts, as at the specified tightening torque this will result in excessive pre-stressing, which may cause damage to both wheels and bolts

- Use only genuine Mercedes-Benz wheel bolts

- Check the wheels after they have taken heavy knocks, e.g. when driving through deep potholes. If deformation is visible, be sure to have the damage checked at a dealership

- Fit only the size of tyre approved for the wheel

- When carrying high payloads and/or towing a trailer, adjust the tyre pressure accordingly and be sure to observe the permissible wheel loads

Information on changing wheels or tyres as well as storing wheels is available at every Mercedes-Benz partner.





Credits: Daimler AG

Copyright © 2012, Mercedes-Benz-Blog. All rights reserved.

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CLASSIC: 1955 alloy-based 300 SL auctioned off for a staggering $4.62 million

By | Published Wednesday, 25 January 2012

We are pleased to hear that, after having underwent an exceptional restoration process carried out by specialist house Rudi & Company, one of the rare, 29 300 SLs from the 1950s equipped with a lightweight alloy bodyshell/chassis has recently found an owner. Originally painted in silver grey and displaying a blue leather interior, the car exited the assembly line on April 20th, 1955 and received the chassis no. 198.043.5500208. After the auction organized by Gooding & Company, the Gullwing was sold off for no less than $4.62 million, a lot more than initially expected. It is no wonder why the client spent so much to have the special 300 SL in his own garage: the car is simply shining. The job done by Rudi Koniczek's team achieved the main target of restoring the classic aura of this icon, with a brilliant, careful attention paid to all the minute details.

You might also be interested in reading the following articles:

- Classic car find: a 1955 300 SL Racing with light-alloy bodyshell shows up in California
- CLASSIC: the 1955 alloy-bodied, chassis no.21 300 SL Racing uncovered

Read a detailed story about this specific 300 SL after pressing the jump button!


Vehicle Description

"[The 300 SL Coupe] is the ultimate in an all-around sports car. It combines more desirable features in one streamlined package than we ever imagined or hoped would be possible" – Road & Track Editors, 1955

If not for US importer Max Hoffman and his passion for a sports coupe based on the highly successful W194 series race cars, the Mercedes-Benz immortal 300 SL line would never have come to production.

The racing success of the factory team was having a positive effect on Mercedes-Benz sales in the US. However, without a car clearly related to the race-winning machines, the marketing advantage of the immensely costly racing effort was limited. Accordingly, Mercedes-Benz management approved the 300 SL project after Mr. Hoffman's firm made a commitment to purchase 1,000 of the cars for US distribution.

Integral to the marketing plan for the groundbreaking new sports car was the expectation that the cars would be used for competition by private owners in order to bolster sales in the showrooms, and the factory ensured that the 300 SL was accepted by the FIA for international competition.

As a result, the production Gullwing could be ordered with an all-aluminum body. When chosen, many additional competition upgrades followed suit. A competition camshaft was fitted along with stiffer, shorter springs that lowered the car and enhanced peak performance, while racing-specification tires on wider rims promoted better adhesion. Plexiglass windows and vented brake drums were also featured in the package. The cars were nearly 200 pounds lighter than the standard steel-bodied version. In all, just 29 of these aluminum-bodied cars were ordered and built – approximately 2% of the total Gullwing production.

This Car

Derived for sport, this aluminum Gullwing did not see competitive use. Completed on April 20, 1955, 5500208 was appropriately finished in metallic silver gray over a blue leather interior. The 300 SL was also outfitted with Rudge wheels, the NSL motor and Plexiglas windows per aluminum-build specifications.

On May 27, 1955, the Alloy Gullwing was sent to Rotterdam where it was loaded aboard a Holland America Line ship for transport to New York. Upon arrival, the Mercedes-Benz distributor sent 5500208 to the West Coast for ultimate delivery to Veron Holz of Bonita, California. The new aluminum-bodied Gullwing would have been an extravagant machine on the roads of San Diego in the late 1950s.

Although the early history of this Gullwing is not known, there is no apparent race record for 5500208. In March 1980, the 300 SL resurfaced in San Diego and was sold through a motorcar locator to Hans Dieter Blatzheim of Bonn, Germany. The purchase price was an astonishing $57,000 for an unrestored car, which the seller most likely assumed was steel. The invoice for the purchase still exists, indicating the alloy chassis number 198.043.5500208.

In need of some attention, the Alloy Gullwing made its way to the well-known restoration shop Hill & Vaughn in Santa Monica, California. Phil Hill and Ken Vaughn had gained a reputation for their high-quality restorations and were frequent winners at the Pebble Beach Concours d'Elegance. Disassembly of the car began in April 1980, and the car is accompanied by a significant file of numerous invoices and photographs documenting the work performed by Hill & Vaughn.

The invoices identify the completeness of 5500208, as well as its solid state, which was no doubt a benefit of having spent 25 years in Southern California. Some necessary aluminum work was addressed and the meticulous fitting of the doors, hood and deck lid are thoroughly outlined. Additionally, the engine and gearbox were sent to AMG Motorbau in Germany for rebuilding. Subsequently returned to Hill & Vaughn in early 1982, the project was nearing completion. By mid-year, the car was ready for paint and assembly.

For unknown reasons, Herr Blatzheim requested that 5500208 be packed in a sea container and sent to Germany. The car was loaded and loose parts were thoroughly inventoried before shipment in November 1982.

The completion of the restoration was conducted in Germany, but not before the body was stripped and prepared again for paint. Photos dated October 1983 show the bare aluminum skin in outstanding condition, proving straight and showing good panel fit. Further photo documentation shows the restoration and assembly of the chassis and completion of the car in silver with gray leather.

In May 1984, the 5500208 was sold to Markus Ahr of Germany. During his ownership, work was performed by Daimler-Benz Aktiengesellschaft including a rebuild of the engine. Herr Ahr kept the car well into the 1990s, at which time work was performed by Kienle Automobiltechnik. Photo documentation shows a rebuild of the transmission, rear end, brakes and suspension. Retaining the silver-over-gray finish, detail work was conducted on gauges and other ancillary components and the project was completed in 1998. Not long after, the Alloy Gullwing was sold to Friedhelm Loh, a noted German collector with a passion for significant Mercedes-Benz.

In 2009, Ken McBride of Seattle, Washington, was given the opportunity to buy 5500208. Having had a handful of Gullwings, Mr. McBride appreciated the importance of an Alloy and, for the first time in his many years of collecting, had the chance to own one. Although his collection was significantly diverse, Mr. McBride had always focused on Mercedes-Benz and had acquired a 540 K Special Coupe, a 540 K Cabriolet A and eventually a 380 K Erdmann & Rossi Special Roadster.

After some serious thought, and perhaps a little family persuasion, the Alloy Gullwing was bought for the collection. In the company of a J Duesenberg Murphy Roadster, a Ferrari 410 Superamerica and other significant cars, the 300 SL was more than a notable entry, it was a dream come true for a man who had an Alloy Gullwing high on a short list of cars to own.

In late 2009, Mr. McBride fell ill and the newly acquired Mercedes-Benz took a back seat. At that time, the Gullwing was sent to noted 300 SL restorer Rudi Koniczek at Rudi & Co. for some necessary sorting. Mr. McBride wanted certain aspects of the car corrected, predominantly the shade of silver and the interior. In the months to come, the Alloy Gullwing was stripped to bare metal and repainted in its original silver (DB 180). Necessary body work was conducted and a methodical process was undertaken to ensure proper assembly and fit of the aluminum body. The gray leather interior was removed and the correct blue leather was installed. Some additional mechanical work was conducted, as well as detailing of various components. One deviation from the original was the addition of seat cushions upholstered in plaid, acknowledging the lightweight car's racing alter ego – they are a marvelous touch.

In mid-2011, Mr. Koniczek had finished the restoration but, sadly, Mr. McBride passed away before he could see the final masterpiece. The result was truly spectacular! Shortly after, Mr. McBride's wife Patty and the rest of the McBride family chose to show the Alloy Gullwing at the Kirkland Concours d'Elegance where it rightfully won its class.

The finish of the 300 SL is of the highest level and the car retains a very correct appearance. With a livery that is a tasteful yet bold statement, the quality of the work and attention to detail is obvious and further inspection reveals the purity of this Alloy Gullwing. The original engine remains, correctly stamped NSL, and the body number can be found stamped on the left wheel arch in the engine compartment. Additionally, the Gullwing has belly pans, its chrome Rudge wheels are original, the luggage is properly finished in natural pig skin, the Becker radio is correct, the grille has the proper "curved star" – the list goes on.

Furthermore, this Alloy Gullwing is accompanied by a tool kit, a knock-off hammer, a jack, comprehensive documentation, the Mercedes-Benz Certificate, an owner's manual, an instruction manual, a spare parts catalogue, a service book and Becker radio manuals.

5500208 is a sensation to drive. Its road manners are what one would expect from any beautifully engineered motorcar. The true excitement, however, is when this supercar comes on cam. With abundant power and torque, and precise gearshift, this Gullwing is simply addictive.

In recent years, these ultra-rare, competition- specification cars have come to be recognized by collectors and enthusiasts for what they have always been – truly the best of the best. They are a tiny group of factory-built, lightweight racers, constructed with the express intention of increasing the public visibility of one of the greatest sports cars ever constructed.

Gullwings are routinely acknowledged as favorites in a collection of any size. They are prized for their magnificent engineering and build quality, purity of design and outstanding driving experience. Aluminum-bodied examples – all 29 of which have survived to this day – are very seldom offered for sale.

As one of the most iconic motorcars of all time, it can easily be said that the Alloy Gullwing is the most significant road-going Mercedes-Benz of the post-war era.
Credits: Gooding & Company

Copyright © 2012, Mercedes-Benz-Blog. All rights reserved.

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Classic car find: a 1955 300 SL Racing with light-alloy bodyshell shows up in California

By | Published Wednesday, 21 September 2011


Between 1954 and 1957, Mercedes-Benz used the Sindelfingen plant to assemble up to 1400 units of the legendary 300 SL Racing (W 198 generation series), 29 of which featured a lightweight construction composed of an alloy body. Almost all of these motoring masterpieces built specifically during 1955 have been traced so far, except for one: the chassis no. 21. Until yesterday, when it was found out that a team of experts managed to discover the missing vehicle stored in a barn in Santa Monica, California.


The property belongs to Rudi Koniczek, who owns the restoration shop "Rudi & Company". The 300 SL of 1955 was destined for a major repair, but somehow the process stuck at a moment and the car remained forgotten under piles of dust and partially dismantled. Koniczek bought the vehicle from the initial owner, Tom Wellmer, and now plans to completely restore the impressive looks and performance of this tremendous classic racing car. The modifications will include upgrades to the braking and suspension systems, as well as a tweaked engine for obtaining a higher output. It also appears the revamped 300 SL with light-alloy shell already has a buyer, even though the restoration is yet to begin. This speaks pretty much of how passionate the client is and, nonetheless, shows this gullwing's special, imposing aura dominated by a prestigious history.

Copyright © 2011, Mercedes-Benz-Blog. All rights reserved.

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