Uncoated plummet with shorter spring for rims with narrow sealing zone. Notes : These weights do NOT comply with the EU End-of-Life Vehicle Directive 2000/53/EC and therefore may not be used on vehicles of categories M1 and N1 within this EU directive. Why should you balance tyres at all? At a speed of 100 km/h the centrifugal force of a 10 g unbalance acts like the force of a sledge hammer. This makes wheels without balancing weights a danger: Without impact weights on steel and aluminium rims, wheel suspensions and bearings are subjected to greater stress. Missing balancing weights on steel and aluminium rims can also lead to noticeable vibrations at the steering wheel and in the interior. In addition, the absence of impact weights results in increased brake and tyre wear.