BMW B58

The BMW B58 is a turbocharged straight-six engine, which began production in 2015.[1] The B58 replaced the N55 and was launched in the F30 340i.[2]

BMW B58
Overview
ManufacturerBMW
Production2015–present
Layout
ConfigurationStraight-six
Displacement3.0 L (2,998 cc)
Cylinder bore82 mm (3.23 in)
Piston stroke94.6 mm (3.72 in)
Block materialClosed-deck aluminium
Head materialAluminium
ValvetrainDOHC 4 valves x cyl. with Valvetronic and Double VANOS
Compression ratio11.0:1
RPM range
Redline7,000 rpm
Combustion
TurbochargerSingle twin-scroll with air-to-liquid Intercooler / Twin-Turbo with air-to-liquid Intercooler (S58)
Fuel systemDirect injection
ManagementRobert Bosch GmbH Di-Motronic
Fuel typePetrol
Oil systemWet sump with water heat exchanger
Cooling systemWater-cooled
Output
Power output240–375 kW (326–510 PS; 322–503 hp)
Torque output450–600 N⋅m (332–443 lb⋅ft)
Dimensions
Dry weight139 kg (306 lb)
Chronology
PredecessorBMW N55

The B58 is part of BMW's new modular engine family, each engine using a displacement of 500 cc (30.5 cu in) per cylinder, following the B38 and B48 engine.[3]

The B58 engine was named Ward's 10 Best Engines in 2016 (installed in the 340i),[4] 2017 (M240i),[5] 2019 (X5)[6] and 2020 (M340i).[7]

The S58 engine, which was released in early 2019, is the high performance version of the B58.[8][9]

Design

Compared with its BMW N55 predecessor, the B58 features a 20% increase in boost pressure, a closed-deck engine block design, an increase in compression ratio to 11.0:1 and a slight increase in displacement from 2,979 to 2,998 cc (181.8 to 182.9 cu in) with added weight of 8 kg (18 lb).

The intercooler - a water-to-air design - is integrated into the intake plenum, to reduce the volume of air between the turbocharger and the cylinders.[10]

As per the N55, the B58 also features a single twin-scroll turbo, direct fuel injection, variable valve timing (called double Vanos by BMW), variable valve lift (called Valvetronic by BMW).[11][12] The redline remains at 7,000 rpm, the bore and the stroke is 82 mm × 94.6 mm (3.23 in × 3.72 in).

The B58 also features an engine-mounted heat encapsulation system to reduce engine wear and emissions during start-up.[13]

As a part of BMW's new modular engine family, the crankcase is a completely new design identical to the B57 diesel version,[14] engineered as both a gasoline and diesel engine in one common part. The closed deck crankcase is equipped with a completely new structure which can be identified by a complex array of ribs on the exhaust and intake side and an additional reinforcement frame on the oil pump side.

Models
EnginePowerTorqueYears
B58B30M0240 kW (326 PS; 322 hp)
at 5,500–6,500 rpm		450 N⋅m (332 lb⋅ft)
at 1,380–5,000 rpm		2015–
250 kW (340 PS; 335 hp)
at 5,500 rpm		500 N⋅m (369 lb⋅ft)
at 1,520–4,500 rpm		2016–
250 kW (340 PS; 335 hp)
at 5,500–6,500 rpm		450 N⋅m (332 lb⋅ft)
at 1,380–5,200 rpm		2017–
265 kW (360 PS; 355 hp)
at 5,500–6,500 rpm		500 N⋅m (369 lb⋅ft)
at 1,520–4,800 rpm		2016–
B58B30M1 250 kW (340 PS; 335 hp)
at 5,000–6,500 rpm		 500 N⋅m (369 lb⋅ft)
at 1,600–4,500 rpm		 2018–
B58B30C 250 kW (340 PS; 335 hp)
at 5,000–6,500 rpm
B58B30O1 285 kW (387 PS; 382 hp)
at 5,000–6,500 rpm
S58B30T0 353 kW (480 PS; 473 hp)
at 6,250 rpm		600 N⋅m (443 lb⋅ft)
at 2,600–5,950 rpm		2019–
375 kW (510 PS; 503 hp)
at 6,250 rpm

B58B30M0: 240 kW (321 HP) version

Applications:

B58B30M0: 250 kW version (335 HP)

Applications:

B58B30M0: 265 kW (355 HP) version

Applications:

  • 2017-2019 G01 X3 M40i[17]
  • 2018-2019 G02 X4 M40i

B58B30M0: 265 kW (355 HP) version

This version was used for 3-/4-Series with the "M Performance Power and Sound Kit".

Applications:

B58B30M1: 250 kW (335 HP)

Applications:

B58B30C: 250 kW (335 HP)

B58B30O1: 285 kW (382 HP)

Applications:

  • 2018-present G29 Z4 M40i (in countries not subject to EU emissions standards)
  • 2019-present G20 M340i
  • 2020-present G01 X3 M40i
  • 2019-present G02 X4 M40i
  • 2021 Toyota Supra[24] (in countries not subject to EU emissions standards)
  • 2020–present G22 M440i

S58
BMW S58 engine
Overview
Production2019–present
Layout
ConfigurationStraight-six
Displacement3.0 L (183 cu in)
Cylinder bore84mm
Piston stroke90mm
ValvetrainDOHC w/ VVT
Combustion
TurbochargerTwin-turbo
Fuel typePetrol
Chronology
PredecessorBMW S55

The S58 engine is the high performance version of the B58 engine. It was introduced in the F97 X3 M and F98 X4 M, marking the first time a stand-alone M model was produced for the X3 and X4.[25]

S58B30T0: 353 kW (473 HP)

Applications:

  • 2019-present F97 X3 M
  • 2019-present F98 X4 M
  • 2020-present G80 M3[26]

S58B30T0: 375 kW (503 HP)

Applications:

  • 2019-present F97 X3 M Competition
  • 2019-present F98 X4 M Competition
  • 2020-present G80 M3 Competition

References
  1. DeMattia, Nico (28 October 2015). "BMW's N55 engine will be missed, but the new B58 might be even better". BMWBlog. Retrieved 20 May 2016.
  2. "BMW F30 LCI 340i". www.paultan.org.
  3. Meiners, Jens (22 April 2011). "BMW's New Three-, Four-, and Six-Cylinder Engine Family Detailed". CARandDriver. Retrieved 21 May 2016.
  4. Murphy, Tom (10 December 2015). "Electrics Charge Up 10 Best Engines List". wardsauto.com. Retrieved 16 May 2020.
  5. Murphy, Tom (12 December 2016). "Seven Turbos, Three Hybrids Share Wards 10 Best Engines Honors". wardsauto.com. Retrieved 16 May 2020.
  6. Murphy, Tom (14 December 2018). "2019 Wards 10 Best Engines: Gasoline, Diesel, Electrification Honored". wardsauto.com. Retrieved 16 May 2020.
  7. Murphy, Tom (20 December 2019). "All-Inclusive List for 2020 Wards 10 Best Engines & Propulsion Systems". wardsauto.com. Retrieved 16 May 2020.
  8. "BMW F97 X3 M launching in 2019 with new S58 engine and 450 horsepower". www.bmwblog.com. Retrieved 28 December 2017.
  9. "BMW Developing S58 Engine as S55 Successor, Will Debut in 2019 X3 M". www.autoevolution.com. Retrieved 28 December 2017.
  10. "BMW's New B58 3-liter Engine Won't Be a Tuner's Delight". www.autoevolution.com. Retrieved 30 December 2017.
  11. "Big Changes Under Hood in '16 BMW 3-Series". www.wardsauto.com. Retrieved 30 December 2017.
  12. "2017 BMW 2 Series Lineup Revealed with New Engines". www.automobilemag.com. Retrieved 30 December 2017.
  13. Boeriu, Horatiu (11 December 2015). "BMW's B58 engine among Wards' 10 Best engines for 2016". BMWBlog. Retrieved 21 May 2016.
  14. "How is the B58 engine (340i) improved from the venerable N55? We have answers". www.bimmerfest.com. Retrieved 30 December 2017.
  15. Sheehan, Sam (16 May 2016). "New bmw m140i m240i and plug 7 series range revealed". autocar.co.uk. Retrieved 22 May 2016.
  16. BMW (24 September 2017). "BMW G30 5 series specifications". bmw.de. Retrieved 24 September 2017.
  17. "BMW G01 X3 technical specifications". www.bmw.de. Archived from the original on 2017-10-13. Retrieved 2017-10-12.
  18. BMW (12 June 2018). "M performance power and sound kit for 340i / 440i". www.bmw.de. Archived from the original on 12 June 2018. Retrieved 12 June 2018.
  19. BMW (12 June 2018). "M performance power and sound kit for 540i". www.bmw.de. Archived from the original on 12 June 2018. Retrieved 12 June 2018.
  20. "The all-new BMW X5: The Prestige SAV with the most innovative technologies". www.press.bmwgroup.com. Retrieved 2018-06-12.
  21. "2020 BMW Z4 M40i Prototype Driven: The Supra's German Brother". Car and Driver. Retrieved 2018-06-12.
  22. https://www.topgear.com/car-news/geneva-motor-show/morgan-plus-six-comes-supra-power
  23. "2019 Toyota Supra engine deep dive: This isn't a 2JZ". Motor Authority. Retrieved 28 August 2019.
  24. https://www.roadandtrack.com/new-cars/future-cars/a30909949/2021-toyota-gr-supra-debut/
  25. "The all-new BMW X3 M and the all-new BMW X4 M." www.press.bmwgroup.com. Retrieved 2019-06-17.
  26. "A Closer Look At The Future BMW M3/M4 Engine – The S58". www.bmwblog.com. Retrieved 2019-06-17.
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