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Bridgestone introduces tin wheel weights
Bridgestone has introduced new tin weights for its Formula One and GP2 Series wheel and tire balancing process from the European Grand Prix onwards. Processes have also been put in place to enable the recycling of these new tin weights. The use of tin as balance weights is believed to have less of an environmental impact than weights made of lead, as previously used.

Bridgestone uses almost a metric ton (1000 kg) of wheel balance weights over the course of a season.

Hiroshi Yasukawa – Director of Bridgestone Motorsport, says...

“Bridgestone’s Environmental Philosophy is to help ensure a healthy environment for current and future generations so we are always looking at ways to reduce our environmental impact. Lead weights have been used in Formula One for many years and offered a good technical solution. However we now believe that we have a more environmentally sound method with tin weights. We have also changed our processes as well to enable recycling of all the waste weights after they have been used. We are very grateful for the close co-operation of all the teams in assisting us to make this change.”

Hirohide Hamashima, Bridgestone Director of Motorsport Tire Development added...

“Even a highly sophisticated Formula One or GP2 tire and wheel requires balancing as there are subtle variations in the tire and wheel as well as a valve and sensors connected to the wheel rim. An unbalanced wheel causes vibrations, making the job for the driver very unpleasant, and even potentially causing problems for components on the car. This means that ensuring the wheel and tire is balanced correctly is an important consideration for Bridgestone and the teams. We are happy that these new weights offer a good solution.”

James Gresham - Bridgestone Motorsport Tire Logistics Manager, said...

“Although this may seem like a small change there are many considerations involved and we have been working closely with our weight supplier and the teams to ensure this development is made. Each team has its own wheel rims and brake and ducting systems, so we had to ensure everyone was happy with the change. Although we only add small amounts of weight to each wheel rim, over the course of a season this adds up to almost a metric ton, so recycling these weights will be beneficial.”

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