AC Schnitzer ACS4 conversion for BMW Z4 (G29) M40i
This example conversion mirrors the specification of our press car in Germany and includes:
400HP performance upgrade with 3 year* engine/drivetrain & OPF warranty
20” AC1 alloy wheels in bi-colour or anthracite finish, 8.5J front and 10J rear
RDC valves (tyre pressure monitors) installed
Michelin Pilot Sport 4S tyres 255/30/20 front and 275/30/20 rear
Suspension lowering set
Front splitter (mounts are colour coded or painted gloss black)
Side skirt set
Rear spoiler elements, colour coded or painted gloss black
Quad sports exhaust with carbon fibre tailpipes
Alloy pedal set and footrest
Decal set.
Optional at extra cost: Upgrade from AC1 to AC3 forged wheels, upgrade from spring kit to RS adjustable suspension, shift paddle set.
*from new. Conditions apply.
Customer Reviews
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Reviewer: Christopher Mellor Amersham

AC Schnitzer Mini conversion for BMW Z4 (G29) M40i
Rossiters have done an excellent job in fitting a front splitter, side skirts, rear boot spoilers, new springs (lowered by 15mm) and a sports exhaust to my BMW Z4 (G29) M40i. I did not go for the new wheels and performance upgrade. The latter had already been accomplished by an ECU remap.
Throughout from discussing and deciding on my requirements, ordering, car delivery, works and return of my car Rossiters have been exemplary. Whilst they had my car Lorcan updated me daily and all at the time of the coronavirus lockdown.
My car looks and sounds stunning. A total one off, unique vehicle and I am delighted with the results. I would be straight back to Rossiters for further ASC works as required.