You hire a car in January and there are winter road conditions. The tyres are marked with M+S. The front tyre tread depth is 2 mm and the back tyre tread depth is 5 mm. Which option is true?
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“In winter road conditions during the period 1 December–31 March, the tread depth must be at least 3 mm on the tyres of private cars”. (Swedish Transport Agency)
The fact that the tread depth varies does not really matter. It would have been permitted if, for example, the front tyres had been 4 mm and the back tyres had been 8 mm.
“M+S” (Mud + Snow) simply means winter tyres.
This is an example of one of the driving theory questions at Körtkortonline.se (also in theory tests in Arabic).
There is also a driving licence book online (2023).
More examples of theory questions: