2017 BMW M4 Competition Pack Convertible - Exterior and Interior Review

The BMW M4 Competition Package is the first significant upgrade to the BMW M3 and M4 range since the cars were launched early in 2014. Available on all derivatives – saloon, coupe and convertible – the package brings more power, new suspension components and wheels, mild styling revisions and additional equipment.

The base M3 and M4 models have been criticised for their very spikey and unpredictable handling at the limit, which BMW’s M division engineers have worked to rectify with the raft of chassis upgrades.

Engine, transmission and 0-60mph time

The 3-litre straight six with twin turbochargers are carried over, but a 19bhp hike lifts peak power to 444bhp. Torque is unchanged at 406lb ft at 1850rpm.

The extra power cuts a tenth of a second from the 0-62mph times – the M3 and M4 Coupe with the optional seven-speed M Double Clutch Transmission now reach 62mph in four seconds flat, while a manual M4 Convertible requires 4.5 seconds. Top speeds are still limited to 155mph.

Power is sent rearwards via an Active M Differential, which has been retuned to improve traction, as has the dynamic stability control system.

The Competition Package brings new springs, dampers and anti-roll bars, which represents a comprehensive overhaul of the base car’s chassis. BMW says the various drive modes – Comfort, Sport and Sport+ – have also been reconfigured and adaptive dampers are now standard fit.

The 20-inch wheels, which mimic the M4 GTS’s wheel design, have been optimised for weight and rigidity. The Michelin Pilot Super Sport tyres are 265/30 20s on the front and 285/30 20s on the rear.

The cabin now features lightweight sports seats with sizeable bolsters and seat belts with the BMW M colours woven into them. The Individual Shadow Line exterior styling upgrade is standard fit, as is the M sports exhaust system.