After unveiling the all-new BMW Z4 M40i First Edition Roadster in late August, the German manufacturer has officially released full specifications and information on the new two-seater along with the unveiling of the 2019 BMW Z4 sDrive30i Roadster, which will arrive in March 2019.
The new Z4’s body, powertrain and chassis received the most development work. Its chassis integrates a double-joint strut suspension at the front and a new five-link suspension in the rear, helping to to deliver increased agility and more precise handling for the new BMW roadster. This combination also provides the balance between sports car handling and ride comfort. The front suspension subframe and control arm mounting points provide more precise cornering and benefit the drivetrain’s acoustics. Increased agility and efficiency are attained with the aid of a lightweight aluminum / steel design in the rear suspension.
A standard feature in the Z4 is the sport steering with variable power assist and ratio. This promotes straight-line stability, and provides precise feedback in corners and low-speed maneuvering.
Complementing the increased capabilities of the chassis, the new Z4 roadster incorporates a a 2.0 liter four-cylinder TwinPower Turbocharged motor featuring an increase of 15 hp and 35 lb-ft of torque over its predecessor. The engine package includes a High Precision Injection system with a maximum pressure increased to 350 bar / 5,076 psi. Under the hood of the new Z4 sDrive30i is a TwinScroll turbocharged engine. It delivers an output of 255 hp between 5,000 and 6,500 rpm, with peak torque of 295 lb-ft. available from 1,550 up to 4,400 rpm.
Those who yearn for a thrilling drive may look into the 2020 BMW Z4 M40i Roadster’s 3.0-liter six-cylinder in-line engine. It has a rapid response and craves for revs and smoothness. This new 6-cylinder engine provides an increase of 47 hp over its predecessor. It features a water-cooled exhaust manifold integrated into the cylinder head. The M40i sends power to the ground with 382 hp between 5,000 and 6,500 rpm, plus 369 lb-ft. of peak torque from 1,600 to 4,500 rpm.
Both models of the new BMW Z4 Roadster, sDrive30i and M40i are equipped with a standard eight-speed Steptronic Sport transmission with shift paddles on the steering wheel. Shorter ratios for the transmission lower gears benefit acceleration. The unit’s improved internals also allow it to operate more efficiently. The eight-speed Steptronic Sport transmission installed in the BMW Z4 M40i has been modified with M-specific shift characteristics to complement the power delivery of the straight-six engine.
A combination of notable lines and distinct surface form the exterior look of the new roadster. It features a sculpted front end with large air intakes, a low, broad BMW kidney grill and headlights positioned at the outer edges to showcase the direction of the new design. The design for the headlights are first for the brand.and has two light sources positioned one above the other. A diagonal accent strip with a direction indicator cuts off at the top to highlight the vertical design. The new BMW Z4 roadster is installed with LED headlights as standard and Adaptive LED headlights available as an option.
A ‘clamshell’ style reminiscent of classical sports cars is integrated in the long hood whose lines are directed to the kidney grill and mounts the wheel arches. Running from the bottom of the hood to the tail lights are upper character lines and appearing on the large air vents behind the front wheel arches is a second lower character line. The interaction of surfaces highlights the flow of air sweeping in the new Z4.
This new roadster has a low-slung and sporty appearance when viewed from various angles. Compared to its predecessor, proportions have have grown in every area: 3.3 inches longer, 2.9 inches wider and 0.5 inches taller. The wheelbase has been shortened by 1 inch, and is combined with wider tracks (+3.86 inches in front and +2.45 inches in rear) and a 50:50 weight distribution, contributing to the enhanced vehicle agility.