If we don't have it, we'll build it.

Vorsteiner GTRS4 Widebody BMW M4 (F82)

550 HP ETG ECU Upgrade, 20-inch wheels, Vorsteiner Exhaust, and more!



Plus Taxes & Licensing

To purchase this vehicle, or to order a similar vehicle, call (888) 859-8806. International clients, please call 001-951-514-2755. Please send email inquiries to [email protected].



If the vehicle is not already in our Inventory, the car is built-to-order. We will locate a vehicle that meets your requirements, take delivery, install the parts you have requested, and ship the vehicle to your home or office anywhere in the world.

Vehicles are typically sold below MSRP. Aerodynamic packages, wheels, and performance upgrades are sold at MSRP. There is no markup and no premium for this service.

Depending on the scope of the project, build time is typically 20-25 working days from receipt of the vehicle and parts at our facility. You will be able to select all colors, parts, and materials used in the build.



There is no difference buying the car through WCM versus your local dealer. In fact, in most cases, all funds (and financing, if applicable) flow directly through our Authorized Dealer.

– We Locate, Negotiate, and Take Delivery of the Vehicle, While You Focus on More Important Things!
– No Markup & No Premium
– Professional Paint & Installation
– Dealer Handles Bank Wire (or Financing)
– Manufacturer’s Warranty & Maintenance Programs Apply
– Styling, Wheels & Performance Upgrades Built Into a Single Transaction
– Car is Delivered 100% Complete to Your Door



In regard to the warranty, when not modifying the engine, drivetrain, ECU, or similar components, all factory warranties will remain intact. Aftermarket parts usually carry a warranty from the manufacturer of 1-yr against defects in workmanship. The manufacturers warranty, maintenance, and car loaner programs are untouched.


– Vorsteiner Carbon Fiber Front Bumper w/ Integrated Front Splitter Element
– Vorsteiner Carbon Fiber Widebody Vented Front Fenders (+2 inches per side)
– Vorsteiner Carbon Fiber Aero Side Blade Elements
– Vorsteiner Carbon Fiber Widebody Rear Fenders (+3.5 inches per side)
– Vorsteiner Carbon Fiber Rear Bumper w/ Integrated Rear Diffuser Element


– Vorsteiner 90mm Quad Exhaust Tips (in Brushed Titanium or Diamond Black)


– Vorsteiner GTRS4 Forged 3-Piece 20 x 10.5 F in Gloss Brushed Shadow
– Vorsteiner GTRS4 Forged 3-Piece 20 x 13.5 R in Gloss Brushed Shadow


– Vorsteiner Embroidered Colored Floor & Trunk Mat Set
– Vorsteiner Chrome Trunk Badging


Feel free to call or email with any questions.

All the best,

West Coast Motoring, LLC.
U.S. | 888-859-8806
International | 001-951-514-2755
[email protected]

  • There are no features available
Curb Weight - Automatic transmission 3585 lbs
Curb Weight - Manual transmission 3530 lbs
Weight distribution, front/rear – Automatic transmission 52.3 / 47.7 %
Weight distribution, front/rear – Manual transmission 51.8 / 48.2 %
Type/valves per cylinders M TwinPower Turbo Inline 6 / 4
Displacement 2979 cc
Bore/stroke 3.3/3.5 inch
Nominal output/rpm 425/5500-7300 hp
Max. torque/rpm 406/1850-5500 lb-ft
Compression ratio 10.2 :1
Fuel grade unleaded premium gasoline
Manual gear ratios – I/II/III 4.11/2.32/1.54 :1
Manual gear ratios – IV/V/VI/R  
Manual gear ratios – Final drive ratio 3.46 :1
Automatic Transmission ratios – I/II/III/IV 4.81/2.59/1.70/1.28 :1
Automatic Transmission ratios – V/VI/VII/R 1/0.84/0.67/4.17 :1
Automatic Transmission ratios – Final drive ratio 3.46 :1
Top speed 2 156 mph
Acceleration 0-60 mph – Manual 1 4.1 sec
Acceleration 0-60 mph – Automatic 1 3.9 sec
Air Resistance 8.16 ft
Fuel Consumption  
City 17 mpg
Highway 26 (24) mpg
Tank capacity, approximate 15.8 gal
Tires, wheels and brakes  
Tire dimensions – standard 255/40 front
Wheel dimensions – standard front/rear 18x9.0 / 18x10.0
Brake type disc ventilated
Electrical system  
Battery capacity 69 Ah
Alternator output 209 A / 2926 W
Performance and efficiency
3.0-liter BMW M TwinPower Turbo 425-hp inline six-cylinder engine. Combines two mono-scroll turbochargers with variable valve control (Double-VANOS and Valvetronic) and high-precision direct injection Track-ready cooling system
Auto Start-Stop function 6-speed manual transmission
Optimized aerodynamics including Air Curtain in front apron and Air Breather behind front fenders with integrated M side gill and M3/M4 badging  
Handling, ride and braking
M-developed electric power steering with Servotronic M Drive and M Driving Dynamics Control
Aluminum front subframe Aluminum suspension arms and wheel carriers
Lightweight steel subframe Twin-tube gas-pressure shock absorbers
M Compound 4-wheel ventilated anti-lock disc brakes (ABS) with Dynamic Brake Control (DBC) Dynamic Stability Control (DSC), including Brake Fade Compensation, Start-off Assistant, Brake Drying, and Brake Stand-by features; with M Dynamic Mode
Active M Differential Double-joint spring strut front axle
Five-link rear axle  
V Spoke forged light alloy wheels (Style 513M), 18 x 9.0 front, 18 x 10.0 rear; and 255/40 front, 275/40 rear performance tires 1 Gray band windshield
Rain-sensing windshield wipers with adjustable speed Xenon Adaptive Headlights with dynamic auto-leveling, Corona headlight-rings and Cornering Lights
Power-adjustable, heated, body-color side-view mirrors with automatic-dimming function Shadowline exterior trim
Sport exhaust system with quad tailpipes and chrome-plated exhaust tips Lightweight trunk lid with integrated gurney
Carbon fiber-reinforced-plastic roof Aluminum hood with powerdome
Kidney grille with black twin slats and M3/M4 designation Aerodynamically optimized double-arm side mirrors
Seating and interior features
10-way power front M sport seats with single-piece back panel, 4-way lumbar support, power-adjustable side bolsters and backlit M logo on backrest. Includes memory system for driver's seat and outside mirrors (2 positions) Split fold-down through-load rear seats
Anthracite Carbon Structure Cloth/Leather upholstery Carbon Fiber interior trim with Black Chrome highlight
Anthracite headliner Floormats
M door-sill finishers, M footrest, M gear shift lever and M specific design elements  
Comfort and convenience
Automatic climate control with separate left/right temperature and air-distribution controls; automatic air recirculation and micro-filter ventilation system with replaceable active-charcoal filters Adjustable front-seat center armrest
Automatic-dimming interior rear-view mirror Manually adjustable steering wheel
Power windows with "one-touch" push-pull open/close for driver Ambiance interior lighting
Dual front sun visors with illuminated mirrors Cupholders for front seats
3-stage heated front seats Four 12-V power outlets (one in front center console, one in rear center console, one under the glove compartment, one in the trunk)
Integrated 3-button Universal garage-door opener Storage compartment package
Instrumentation and controls
3-spoke leather-wrapped multi-function M steering wheel with controls for audio system, cruise control, and Bluetooth® wireless communication for hands-free mobile phone 2 USB audio connection and hands-free Bluetooth including Audio Streaming
Instrument cluster with extended contents Expanded Check Control vehicle monitor system
iDrive system with on-board computer and touchpad Controller, and 8 programmable memory buttons Exterior temperature display with alarm for freezing temperatures
Dynamic Cruise Control 3 BMW Navigation system with high-resolution screen; 3-D maps; 200 GB hard drive with 20 GB storage for audio files; voice feedback and Voice command system
Start/Stop button Tire Pressure Monitor
BMW Online with MyInfo and BMW Apps Advanced Real Time Traffic Information
BMW TeleService Vehicle & Key Memory
Audio system
Anti-theft AM/FM stereo CD/MP3 audio system with Radio Data System (RDS), Auto-Store, and 3-channel FM diversity antenna Pre-wiring for SiriusXM® Satellite Radio Tuner
HD Radio™ with "multicast" FM station reception  
Safety and security
Driver's and passenger's front airbag supplemental restraint system (SRS) with advanced technology: dual-threshold, dual-stage deployment; and front-passenger seat sensors designed to prevent unnecessary airbag deployment BMW's Advanced Safety System for integrated deployment of passive and active safety features
Active Knee Protection Front-seat side-impact airbags
Front safety belts with automatic pretensioners Acoustic safety belt warning
LATCH attachment for child-restraint safety installation Automatic-locking retractors (ALR) on all passenger-seat safety belts (for installation of child- restraint seats)
Interlocking door anchoring system to help protect against door intrusion in side impacts Adaptive Brakelights
Daytime Running Lights Impact sensor that activates Battery Safety Terminal disconnect of alternator, fuel pump and starter from battery; and turns on hazard lights, interior lights and unlocks doors
Coded Driveaway Protection (prevents engine start when your key fob with constantly changing electronic code is not used) Remote keyless entry security alarm system with selective unlocking and double-lock feature (programmed at authorized BMW center), remote trunk opening, interior motion detector, and panic feature
BMW Assist eCall™ includes Emergency Request (SOS button) and Automatic Collision Notification BMW Remote Services includes Stolen Vehicle Recovery, Remote Door Unlock and My BMW Remote app
BMW Ultimate Service® (for complete details on BMW Ultimate Service, visit 4-year/50,000-mile New Vehicle/SAV Limited Warranty
12-year Rust Perforation Limited Warranty 4-year/Unlimited Mileage Roadside Assistance Program

Vorsteiner claims the new fenders add two inches of width per side up front and three-and-a-half inches per side out back which is sizable, The fenders also incorporate functional cooling ducts for the brakes, a feature often overlooked on custom wide-body kits. Complementing the new corners is an upgraded front bumper with integrated splitter, aero blade side elements, and a new rear bumper with an integrated rear diffuser. All are made from lightweight carbon fiber and coated in BMW’s factory Austin Yellow Metallic paint.

Inside, you’ll find the stock setup mostly untouched, with the exception of a Vorsteiner-embroidered floor and trunk mat set. Everything else, like the copious M badging, race-inspired seats, and leather-wrapped multifunction steering wheel, are all retained. While I would like to see more, it’s not a big deal. I like the interior of the M4 just fine.

The drivetrain upgrades are pretty mild as well, at least compared to the modifications made to the exterior, as the only mod is increased boost via ESS Tuning’s E-Tronic ECU re-tune. This re-tune increases output to an impressive 550 horsepower and 560 pound-feet of torque, all without any splicing or additional adjustments.*

Lowering the stance is KW Suspension’s sleeve kit, which maintains BMW’s Dynamic Drive features, like active roll control and adjustable rigidity settings. Those larger wheels accommodate large tires as well, with Pirelli’s P Nero rubber measuring 275-mm width up front and 345-mm width out back.

*WCM offers an ECU upgrade, courtesy of ETG, for the F80 M3 / F82 M4 that makes an impressive +101 HP and +110 LB-FT. We use a module for this car which adjusts the cam timing, boost, etc. In a few weeks we will release an OBD2 option, if you prefer an ECU Flash. Price is $1095 for the Module, which we like because we can ship it to the client for almost no downtime -- if we are not building the car for you, it has a bypass plug to make it invisible or for troubleshooting, it can be easily removed back to stock, and the dealer can't overwrite the program during updates or service.

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