Car trailer tires have a residual tread pattern height of less than 1.6 mm.✓Correct answer
The rear of the vehicle is equipped with orange-colored turn signals.
In both cases.
Explanation
Tyres on a private automobile's trailer must retain at least 1.6 mm of tread, so falling below that value prohibits use. Orange rear direction indicators are permitted, which is why the two conditions are not both defects.