Sportauto pits aftermarket tyres against OE rubber
In its 2025 summer tyre test, Sportauto not only highlights the advantages of mixed diameter fitments, it also compares original equipment and aftermarket tyres, emphasising why the former may not be the best choice – despite being tailor made for a specific vehicle model. In this case the vehicle is a BMW M4; the motoring publication evaluates four brands of tyre in the combination of 275/35 R19 at the front and 285/30 R20 at the rear, a setup increasingly common in high-performance sports cars.