Motability through Krap Fit don’t change your tyres at 3mm, they make you wait until they’re down to 2mm and down right dangerous before they will change them.
I have had 7 lots of tyres done by Kwak Fat in the last 7 years and every time I have been sent away as they were not fully down to 2mm and when I have spoken to Motability about them being dangerous and all they say is take it to Klap Fit and have them check it, who always say it’s not 2mm yet! ?