Ready for the test, in the fast lane: With our App for Android
Get the Führerschein-bestehen.de App with our explanations and the official catalogue of questions.
Get it on Google Play
Sick of ads!?
Log in now and continue studying with no ads!
Fully equipped for exam preparation:
All of the questions from the driving test in all translations
All of the questions from the theory test, in many languages
Exam simulations and special questionnaires
Exam simulations and special questionnaires
Explanations for all Class A and B questions
Explanations for all car and motorcycle questions
Certified by Trusted Shops
Certified by Trusted Shops
Can be used on all devices (desktop, tablet, smartphone)
Can be used on all devices

The explanatory texts for the questions were machine translated. More info

All explanatory texts were compiled in German and then machine translated. This may result in translation errors. However, this only refers to the explanations to the questions. The translations of the questionnaires were done by TÜV | DEKRA arge tp 21 and are exactly the same as the translations in the theory test. These translations are only available once you are logged in. All other translations on the website were done by a different translation agency.
Grundstoff, Mofa

Wie wirkt sich eine wesentliche Unterschreitung des empfohlenen Reifendrucks aus?

Der Schadstoffausstoß nimmt ab
If the tire pressure is too low, we have to give more throttle to maintain the speed. Therefore, more fuel is consumed. As fuel consumption increases, pollutant emissions also increase.
Der Reifenabrieb nimmt zu
If the tire has too little air, then it rolls heavier. So we have to overcome a higher rolling resistance. But that means we have to transfer more power. The higher the force to be transmitted to the wheel, the more the tire is stressed. The wear and thus the tire wear increases.
Der Kraftstoffverbrauch nimmt zu
Anyone who has ever ridden a bicycle and had very little air in the tire, knows that the bike then drives harder than usual. It takes much more power to get ahead. The same is true of the car, the tires are heavier, and we are giving much more throttle for the same speed. This increases fuel consumption.

Prüfungsreif auf der Überholspur!

Register now to see the questions in your choice of 12 languages.

Sign up

Do you like our explanations?
You will be amazed by our online learning system that helps you prepare for your driving test! Learn all the answers for the theory test online and pass on your first try.
Ready for the test in the fast lane: The study App with our explanations!

Get it on Google Play


Download the ad-freeFührerschein-bestehen.de App for your smartphone or tablet and study with help from our explanations and the official catalogue of questions.