Just took my car to dealer to swap my dash cam from part ex to new car which has done 400 miles. They did a health check which was fine but the tyre tread was on 6.3mm, I would have expected new car tread to be 8-9mm ? They are Falkken 17 inch tyres. I have checked myself and they are around 6mm, is this another cost cutting exercise. On my last Corolla these falkken tyres did not last as long as expected so maybe this was why