I bought 4 new Michelin Supersport tyres last year from Costco. As these were very expensive tyres I decided to have 4 wheel alignment done. Costco don't do alignment so I went to Fornula 1 as I have had my MOTs and services carried out by them for the last decade. The adjustment had to be done at Burton as Derby never had a full wheel alignment machine. The machine that does the print out was broken so I was advised I wouldn't get a report. I covered 5000 miles before my next MOT was due. Having had the MOT completed today my car failed due to my rear tyres worn to the core on the inside of both rear tyres. These are Michelin Supersport tyres and are premium tyres, I was told by Formula 1 they only guarantee tracking for 28days. The tracking on the front is fine but the rear toe is so far out that Formula 1 state that I have done this by driving around. After visiting Costco they stated that it is only due to the adjustment of the rear toe on both corners as the outside of the tyre is perfect and that maybe one tyre would knock out it I hit something in the road but both rear tyres losing exactly the same tread looks like misalignment. In addition to this if both rear tyres were knocked out from hitting something surely both front tyres would have suffered the same issues. My tyres are down to the metal cord on the inside and both Formula 1 sites are telling me its my fault and saying they can't do anything. I have contacted Nick Green the regional manager to no avail on the number supplied for him. Extremely annoyed is an understatement for how I feel. My last tyres wore out evenly until 1.6 and Formula 1 can only say it is my fault for the way I drive. To be honest I am extremely unimpressed by Formula 1 and will look at taking all my family cars elsewhere to be MOTd and serviced if this issue is not addressed by the regional manager. Now I having to fork out £500+ for new tyres to get past my MOT. The worst thing is I was going to go to Leicester today to see my sister with my wife and baby boy. Our tyres could have blown out and we could have died travelling on the motorway due to the incompetent work carried out by Formula 1.