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Frequently asked questions

Also see our list of frequently asked questions. The answer to your question, whether general or technical, may already be there.

• Which tyre suits my car?
• Tyre pressure for caravan tyres
• What tyre pressure is best for my car?
• Tyre pressure low-section tyres
• Does a nitrogen-filled tyre keep its pressure for longer?
• Does my tyre's tread depth influence the handling characteristics?
• What's the difference between summer and winter tyres?
• When do I change to winter tyres?
• Is it mandatory to fit winter tyres in Germany?
• Tyre storage
• Prescribing a certain tyre brand by the car manufacturer
• Tyre age
• Checking, changing and repairing tyres
• Spare tyre
• What are directional tyres?
• What are asymmetrical tyres?
• Snow chains
• What do the codes on the tyre sidewall mean?
• Speed symbol
• Load index
• Conversion table tyre pressure