Tires and Wheels

Tire pressure, wear, sizes, TWI indicators, wheels, alignment and signs that affect safety and handling.

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Close-up de um pneu de carro com uma grande bolha projetada para fora na lateral, ao lado da roda de liga leve sobre o asfalto.

Tires and Wheels13/09/20265 min read

Tire sidewall bubble: why it appears, why it cannot be repaired, and when to stop driving

Learn how a sidewall bubble forms after structural damage, how to tell it from normal marks, and why the tire must be taken out of service.

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Pneu em primeiro plano numa loja automotiva, com etiqueta de eficiência fixada à banda de rodagem e uma mão apontando para os indicadores, com carro desfocado ao fundo.

Tires and Wheels08/09/20266 min read

Brazil's Inmetro tire label: how to balance wet grip, rolling resistance and noise

Learn what each ENCE rating measures and how to weigh wet-weather safety, efficiency and noise instead of choosing a tire only by an A grade.

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Mecânico agachado ao lado de um carro verifica a pressão do pneu com manômetro e inspeciona válvula e borda do aro com solução espumante em uma oficina.

Tires and Wheels01/09/20267 min read

Tire loses pressure every week with no visible puncture: how to find the cause

Learn how to separate normal pressure loss from a valve, bead, wheel, or slow puncture leak using a pressure log and practical clues.

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Motorista segura um volante com efeito de vibração perto de 90 km/h em uma rodovia, com a roda dianteira do carro em destaque.

Tires and Wheels01/09/20267 min read

Steering wheel vibrates at certain speeds: balance, tire, wheel or another cause?

A vibration that appears only within a certain speed range often points first to the tire/wheel assembly, but braking, acceleration and idling change the diagnosis.

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