Wheel knowledge
We provide tips for a longer tyre service life and supply important information on minimum tread depth and tyre pressure.
How to change a wheel
Does your wheel need to be changed? In our explainer video, we show you how to change the wheels on your vehicle yourself and what equipment you need to do so.
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- Last updated: 24th June 2025
Tyre labelling and tyre structure
225 / 45 R 17 94 W – what do the numbers and letters on the tyre mean? We explain how to understand the figures on wheels and rims. Plus, we show you how a tyre is constructed.
Important tips for wheels and tyres
We’ve compiled a few useful tips for you on how you can increase the service life of your tyres. We also explain why tread depth and tyre pressure are so important and how to recognise common tyre damage and signs of irregular wear.
FAQ on wheel knowledge
Where can I find information on tyre pressure?
Is it OK for car tyres if the tyre pressure is too high?
How do I check the tyre pressure?
Is my tyre leaking?
How do I measure the tread depth?
Are there tyres specially for electric cars?