could be either. get it refitted if the others are all correct. go to whoever fitted the tyre.

Depends, if its a directional tyre (probable) then its on the wrong side of the car. Inspect the side wall and check if it has a a large arrow indicating the direction of rotation.

If its an asymmetric tyre, then its the wrong way round on the rim, and the word INSIDE will be visible on the the sidewall. This is unlikely as every tyre fitter should know how to fit a tyre - although it did happen to me about 25 years ago.

In either case, if it has been fitted wrong go back to the tyre fitter, get them to fix it free and pay for your Mot.

You could also ask the Mot tester, they should explain better. You could either swap with the other side if the other side is also wrong or is non directional or look at using your spare if its in good condition, as that should normally be non directional.

Mixing non directional and directional tyres on the same axle is not an Mot failure but not recommended as it can lead to dangerous handling problems when pushed to the limit.

Edited by brum on 06/09/2017 at 19:41