AC Schnitzer 21" wheel & tyre set AC3 FlowForming silver-anthracite Continental for BMW X4M F98 (82402977107)

for X4M F98
including RDC wheel electronics modules
FA: 9,0 x 21" ET 18 with 255/40 R 21
RA: 10,0 x 21" ET 30 with 265/40 R 21

Scope of delivery:
- 4 complete wheels:
4 rims AC3 Flowforming Silver/Anthracite – mounted and balanced
- 4 pieces RDC wheel electronic module
- specific hub cover
- quality tag
- homologation certificate
- optional vehicle- and rim-specific mounting and fastening material
- certificate of Authenticity
- 2 years manufacturer's warranty

Wheelset development at AC Schnitzer
A few definitions first

Wheel/complete wheel = rim including tire
Wheel set = 4 wheels Mixed tires = Different tires on front and rear axles Philosophy/Design The wheels establish a car's connection to the road not only physically but also visually. "Therefore, the correct proportions of the rims to the body are crucial," explains AC Schnitzer Chief Designer Michele Viandante. "Rims that are too small can quickly make a vehicle appear long-legged and unstable." The AC3 Flowforming rims achieve what initially seems contradictory: reducing weight while simultaneously increasing the wheel diameter. The AC3 Flowforming rims measure 9 or 10 x 21 inches. Three color variants are available: Bicolor Silver/Anthracite or Matt Anthracite and Black. Visually, the rims are clearly part of the AC3 rim family and complement the portfolio in terms of sizes, applications, and manufacturing processes. The lower weight of the AC3 Flowforming wheels reduces the vehicle's unsprung mass by approximately 10 kg, thereby also lowering its CO2 emissions. At the same time, there is also a noticeable improvement in driving dynamics, as the centrifugal forces on the axles are reduced by approximately four times – a perceived 40 kg. The AC Schnitzer AC3 Flowforming wheels therefore offer real advantages: for the driver and the environment.

material
Only high-quality aluminum alloys are used. The material is additionally heat-treated during the production process, resulting in increased strength while simultaneously reducing weight. Material samples are taken during the manufacturing process to ensure consistent, high quality.

production
The flowforming process is one of the most advanced manufacturing technologies in the wheel industry. In this production process, after the actual aluminum casting, the raw product is further processed by rolling it out. This step serves to compact the metal, which guarantees greater stability and impact resistance of the rim. On the other hand, the improved stability also allows for even more intricate wheel designs, as the wall thicknesses can be significantly thinner than those of conventionally manufactured rims. And this is measurable: compared, for example, with the BMW "Double Spoke 706 M" forged wheel for the M5, which, at 10.5J x 20", is even one inch smaller than the new AC3 Flowforming wheels, these are 2.4 kg and 2.5 kg lighter, respectively, than the BMW rim.

Surface Black
In this process, the wheel is first primed, then completely painted. A two-coat clear coat is then applied, consisting of a polyester primer and a glossy acrylic clear coat.

Test procedures / safety
After their design, the first sample rims are manufactured under real production conditions. These must undergo a multitude of tests. Among other things, their strength is tested. The bending test simulates the "rim lifespan." Every AC Schnitzer rim must survive this lifespan unscathed in order to be produced and sold. Vehicle-specific tests, including test installations with clearance measurements and driving tests on public roads and racetracks, follow. Only after these procedures do our rims receive homologation, i.e., approval for use on public roads. Wheels are safety-critical components. Therefore, they are inspected and tested with the utmost care. This begins with initial chemical material tests and concludes with rigorous endurance tests on test machines: - §30 StVZO wheel guidelines - ECE R124 - Bending tests - 90° impact test - Rolling tests

Scope of delivery:
- 4 complete wheels
- 4 AC3 Flowforming Black rims
- assembled and balanced
- 4 RDC wheel electronics modules
- Hub caps
- Quality tag
- Certificate of conformity
- Optional vehicle and rim-specific mounting and fastening material
- Certificate of authenticity
- Care instructions

Uniqueness of the wheelset with AC3 flowforming rims
- Weight-optimized
- integrated AC Schnitzer logo
- open design in BiColor Silver/Anthracite, matt anthracite or black, which allows a direct view of the brakes
- Engineered in Germany
- compatible with the standard RDC system
- also available as a complete wheel set
- 2-year warranty
- production monitored according to ISO standards
- Black, optionally also available in BiColor Silver/Anthracite or matt anthracite
- spacers / fitting kit for the best possible position in the wheel house (to be ordered separately)
- vehicle-specific fitting kit

Stock Availability

Due to the amount of bespoke orders it is not always possible for us to keep every item in stock at all times. If you require the item urgently please contact us to check stock before purchase.

Call on 01933 685840

Wheels & Tyres

All wheel & tyre packages are special order and cannot be cancelled or returned once purchased.

All in stock wheel & tyre packages come from Germany and have a 2-3 week lead time which includes tyre fitting.

Can I have these parts fitted?

We offer fitting on all our parts.

If you would like your parts fitting please contact us at 

info@ac-schnitzer.co.uk before you order online.

UK Next Day Delivery

We offer UK next working day delivery on all IN STOCK products. Please note all stock coming from Germany can be subject to 2-3 week lead time. Once in the UK these will be shipped UK next working day.

Any lead times longer than this and we will contact you to let you know.