AA Sport has teamed up with Practical Performance Car magazine again for some tyre testing. tyres are the most important factor in performance driving, getting them working well is a test for the driver and mechanic. Gathering data from the tyres will tell you how well the car is set up and help improve things. It’s a labourious process but worth the effort. Our test car is an astra GTE race car.  Read how we get on in Practical Performance Car mag.