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
B 58 engine on Bmw 340i.jpeg
B58B30M0 in a F30 340i
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
Timing drive systemChain
Compression ratio11.0:1
RPM range
Redline7,000 rpm
Combustion
Supercharger48V electrical systems Starter Generator (2020; some Model)
TurbochargerSingle twin-scroll with air-to-liquid Intercooler / Twin-Turbo with air-to-liquid Intercooler (S58)
Fuel systemDirect injection
ManagementBosch Di-Motronic
Fuel typePetrol
Oil systemWet sump with water heat exchanger
Cooling systemWater-cooled
Output
Power output240–285 kW (322–382 hp)
Torque output450–500 N⋅m (332–369 lb⋅ft)
Dimensions
Dry weight139 kg (306 lb)
Chronology
PredecessorBMW N55
2020 Toyota Supra, B58B30C Engine (USDM)

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 World's 10 Best Engines in 2016 (installed in the 340i and 440i),[4] 2016 ,2018 and 2022 (M240i),[5] X3 and X4 M40i, Z4 M40i ,2019 (X5)[6] and 2019(M340i).[7]

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

DesignEdit

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.

ModelsEdit

Engine Power Torque Years
B58B30M0 240 kW (322 hp)
at 5,500–6,500 rpm
450 N⋅m (332 lb⋅ft)
at 1,380–5,000 rpm
2015–2019
250 kW (335 hp)
at 5,500 rpm
500 N⋅m (369 lb⋅ft)
at 1,520–4,500 rpm
2016–2021
250 kW (335 hp)
at 5,500-6,500 rpm
450 N⋅m (332 lb⋅ft)
at 1,380–5,200 rpm
2017–2019
265 kW (355 hp)
at 5,500–6,500 rpm
500 N⋅m (369 lb⋅ft)
at 1,520–4,800 rpm
2016–2019
B58B30M1 250 kW (335 hp)
at 5,000–6,500 rpm
500 N⋅m (369 lb⋅ft)
at 1,600–4,500 rpm
2018–
B58B30C 250 kW (335 hp)
at 5,000–6,500 rpm
B58B30O1 285 kW (382 hp)
at 5,000–6,500 rpm
S58B30T0 353 kW (473 hp)
at 6,250 rpm
600 N⋅m (443 lb⋅ft)
at 2,600–5,950 rpm
2019–
375 kW (503 hp)
at 6,250 rpm

B58B30M0: 240 kW (322 HP) versionEdit

Applications:

B58B30M0: 250 kW (335 HP) versionEdit

Applications:

B58B30M0: 250 kW (335 HP) versionEdit

Applications:

B58B30M0: 265 kW (355 HP) versionEdit

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

Applications:

B58B30M1: 250 kW (335 HP)Edit

Applications:

B58B30C: 250 kW (335 HP)Edit

B58B30O1: 285 kW (382 HP)Edit

Applications:

  • 2018-present G29 Z4 M40i (in countries not subject to EU emissions standards)
  • 2019-present G20 M340i
  • 2019-present G21 M340i
  • 2020-present G01 X3 M40i
  • 2019-present G02 X4 M40i
  • 2020–present G22 M440i
  • 2021-present Toyota Supra[23] (in countries not subject to EU emissions standards)
  • 2021-present G42 M240i

S58Edit

BMW S58 engine
 
Overview
Production2019–present
Layout
ConfigurationStraight-six
Displacement3.0 L (2,993 cc)
Cylinder bore84mm
Piston stroke90mm
ValvetrainDOHC w/ VVT
Combustion
TurbochargerTwin-turbo
Fuel typePetrol
Output
Power output353–375 kW (473–503 hp)
Torque output600 N⋅m (443 lb⋅ft)
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.[24]

The S58 features twin turbos, a redline at 7,200 rpm with the bore and the stroke at 84 mm × 90 mm (3.31 in × 3.54 in).

S58B30T0: 353 kW (473 HP)Edit

Applications:

  • 2019-present F97 X3 M
  • 2019-present F98 X4 M
  • 2021-present G80 M3[25]
  • 2021-present G82 M4

S58B30T0: 375 kW (503 HP)Edit

Applications:

  • 2019-present F97 X3 M Competition
  • 2019-present F98 X4 M Competition
  • 2021-present G80 M3 Competition
  • 2021-present G82 M4 Competition

ReferencesEdit

  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. Archived from the original on 2016-06-10. Retrieved 2016-05-20.
  3. ^ Meiners, Jens (22 April 2011). "BMW's New Three-, Four-, and Six-Cylinder Engine Family Detailed". CARandDriver. Archived from the original on 12 May 2016. Retrieved 21 May 2016.
  4. ^ Murphy, Tom (10 December 2015). "Electrics Charge Up 10 Best Engines List". wardsauto.com. Archived from the original on 13 January 2016. Retrieved 16 May 2020.
  5. ^ Murphy, Tom (12 December 2016). "Seven Turbos, Three Hybrids Share Wards 10 Best Engines Honors". wardsauto.com. Archived from the original on 13 December 2016. Retrieved 16 May 2020.
  6. ^ Murphy, Tom (14 December 2018). "2019 Wards 10 Best Engines: Gasoline, Diesel, Electrification Honored". wardsauto.com. Archived from the original on 13 December 2018. Retrieved 16 May 2020.
  7. ^ Murphy, Tom (20 December 2019). "All-Inclusive List for 2020 Wards 10 Best Engines & Propulsion Systems". wardsauto.com. Archived from the original on 20 December 2019. Retrieved 16 May 2020.
  8. ^ "BMW F97 X3 M launching in 2019 with new S58 engine and 450 horsepower". www.bmwblog.com. 13 March 2017. Retrieved 28 December 2017.
  9. ^ "BMW Developing S58 Engine as S55 Successor, Will Debut in 2019 X3 M". www.autoevolution.com. 18 March 2017. Archived from the original on 29 December 2017. Retrieved 28 December 2017.
  10. ^ "BMW's New B58 3-liter Engine Won't Be a Tuner's Delight". www.autoevolution.com. 12 September 2015. Archived from the original on 1 January 2018. Retrieved 30 December 2017.
  11. ^ "Big Changes Under Hood in '16 BMW 3-Series". www.wardsauto.com. 15 October 2015. Archived from the original on 1 January 2018. Retrieved 30 December 2017.
  12. ^ "2017 BMW 2 Series Lineup Revealed with New Engines". www.automobilemag.com. 17 May 2016. Archived from the original on 31 December 2017. 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. Archived from the original on 31 December 2017. Retrieved 30 December 2017.
  15. ^ Sheehan, Sam (16 May 2016). "New bmw m140i m240i and plug 7 series range revealed". autocar.co.uk. Archived from the original on 20 May 2016. Retrieved 22 May 2016.
  16. ^ BMW (24 September 2017). "BMW G30 5 series specifications". bmw.de. Archived from the original on 24 September 2017. Retrieved 24 September 2017.
  17. ^ 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.
  18. ^ "BMW G01 X3 technical specifications". www.bmw.de. Archived from the original on 2017-10-13. Retrieved 2017-10-12.
  19. ^ "The all-new BMW X5: The Prestige SAV with the most innovative technologies". www.press.bmwgroup.com. Archived from the original on 2018-06-12. Retrieved 2018-06-12.
  20. ^ "2020 BMW Z4 M40i Prototype Driven: The Supra's German Brother". Car and Driver. Archived from the original on 2018-06-12. Retrieved 2018-06-12.
  21. ^ "The Morgan Plus Six comes with Supra power". 5 March 2019. Archived from the original on 5 March 2019. Retrieved 5 March 2019.
  22. ^ "2019 Toyota Supra engine deep dive: This isn't a 2JZ". Motor Authority. Archived from the original on 28 August 2019. Retrieved 28 August 2019.
  23. ^ "2019 Toyota Supra engine deep dive: This isn't a 2JZ". Motor Authority. Archived from the original on 28 August 2019. Retrieved 28 August 2019.
  24. ^ "The all-new BMW X3 M and the all-new BMW X4 M." www.press.bmwgroup.com. Archived from the original on 2019-06-17. Retrieved 2019-06-17.
  25. ^ "A Closer Look At The Future BMW M3/M4 Engine – The S58". www.bmwblog.com. 10 June 2019. Retrieved 2019-06-17.