There's no denying the MMR Z4 GT3 is a work of motorsport art. Carbon fibre exterior, beautifully engineered by BMW Motorsport throughout and packing a substantial 515bhp and 515Nm power and torque hit respectively thanks to the 4.4-litre V8 engine nestling, you guessed it, under yet more carbon fibre. Before we could even contemplate driving it in anger however, there was the small matter of the 233 pages of BMW Motorsport's vehicle documentation to digest which included everything from how and where to check the levels, to starting procedures and more... and that was before we tackled the separate drivers' guide! With Max's bedtime reading sorted for the next few nights the car was...

When Supercar Driver contacted us recently with a view to upgrading their E92 M3 we were only too happy to lend a hand... The brief was clear, they wanted simple modifications that would allow their M3 to perform better on the various road trips that they offer plus, being as it’s the lead car for these trips, allow it to handle track work alongside the rarer exotica that they often have along with them. Oh… and whatever we did also had to be easily reversible, too. First, we took the car on track to get a feel for the current setup...