Topic: Vehicle mechanics and maintenance · Nº 476 / 539
Si la rueda sufre desgaste por los lados de la banda de rodadura, ¿a qué puede ser debido?
If a tyre is wearing at the sides of the tread, what may be the cause?
- AA que las ruedas tienen más presión de la recomendada por el fabricante.The tyres have a higher pressure than the manufacturer recommends.
- BA que las ruedas tiene menor presión de la recomendada por el fabricante.The tyres have a lower pressure than the manufacturer recommends.
- CA que los amortiguadores están en mal estado.The shock absorbers are in poor condition.
Show answer
Correct answer
- BA que las ruedas tiene menor presión de la recomendada por el fabricante.The tyres have a lower pressure than the manufacturer recommends.
It is important to check tyre pressure at least once or twice a month. Do it when the tyres are cold, using the pressures recommended by the manufacturer. A tyre with the wrong pressure wears unevenly, has a higher risk of a blowout and can increase fuel consumption. * With a pressure lower than the manufacturer's: - They wear more at the sides of the tread. - They deform and heat up more. - The risk of a blowout increases. - Grip is reduced and the risk of aquaplaning increases (the tyres cannot clear the layer of water on the road and lose grip). - Fuel consumption increases. * With a pressure higher than the manufacturer's: - They wear more in the centre. - The contact area with the road and the grip are reduced. - They do not absorb bumps in the road well (they vibrate more and the suspension deteriorates).
Independent app: not affiliated with or endorsed by the DGT (Spain's Directorate-General for Traffic) or the Ministry of the Interior. The official exam is booked with the DGT and taken at its test centres. The questions here are practice material; the DGT's official question bank is not public.