We tested four cars - a Ford Focus, Renault Clio, Toyota RAVA and Audi A4 - at the Motor Industry Research Association (Mira) testing facility in Nuneaton, Warwickshire.
Each car was brake tested at 70mph with 3.0mm depth tyre treads and then with the legal minimum 1.6mm depth tyre treads. The difference between the two results shocked and surprised us...
For the full story see the 5-11 July issue of Auto Express magazine.
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