BMW B58

Last updated
BMW B58
G26 M440i engine B58.jpg
B58B30O1 in a G22 M440i
Overview
Manufacturer BMW
Production2015–present
Layout
Configuration Straight-six
Displacement 3.0 L (2,998 cc)
Cylinder bore 82 mm (3.23 in)
Piston stroke 94.6 mm (3.72 in)
Cylinder block materialClosed-deck aluminium
Cylinder head materialAluminum
Valvetrain DOHC 4 valves x cyl. with Valvetronic and Double VANOS
Valvetrain drive system Chain
Compression ratio 11.0:1
RPM range
Max. engine speed 7,000 rpm
Combustion
Supercharger 48V electrical systems Starter Generator (2020; some models)
Turbocharger Single twin-scroll turbocharger with air-to-liquid intercooler
Fuel system Direct injection
Management Bosch Di-Motronic
Fuel type Petrol
Oil system Wet sump with water heat exchanger
Cooling system Water-cooled
Output
Power output 240–285 kW (322–382 hp)
Torque output 450–500 N⋅m (332–369 lb⋅ft)
Dimensions
Dry weight 139 kg (306 lb)
Chronology
Predecessor BMW N55
B58B30C in a 2024 Ineos Grenadier IneosGrenadierB58.jpg
B58B30C in a 2024 Ineos Grenadier

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]

Contents

The B58 is part of BMW's 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 to Ward's World's 10 Best Engines four times, 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] It was named to Ward's World's 10 Best Engines in 2023 (installed in the M2). [10]

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 turbocharger is a twin-scroll design, for more efficient power delivery with less turbo lag and more power than a conventional single turbocharger, as well as for weight and space saving benefits. [11] 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. [12] [13]

As per the N55, the B58 also features direct fuel injection, variable valve timing (called double Vanos by BMW), and variable valve lift (called Valvetronic by BMW). [14] [15] 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. [16]

For durability and longevity, the rotating assembly has a forged steel crankshaft and forged connecting rods. [17] [18]

As a part of BMW's new modular engine family, the crankcase is a completely new design identical to the B57 diesel version, [19] 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.

The engine was revised in 2018, dubbed "B58TU", with notable changes and improvements. The fuel system was updated with 75% increased pressure with updated high pressure fuel pump and injectors, a new particulate filter in the catalytic converter, a new one-part timing chain as opposed to the earlier two-part, and new separate cooling circuits for the cylinder head and crankcase. For weight savings, the crankcase wall thickness and forged crankshaft were optimized, and the exhaust manifold was integrated into the cylinder head housing. [20]

B58B30M0 in a F30 340i B 58 engine on Bmw 340i.jpeg
B58B30M0 in a F30 340i

Models

EnginePowerTorqueYears
B58B30M0240 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
B58B30M1250 kW (335 hp)
at 5,000–6,500 rpm		500 N⋅m (369 lb⋅ft)
at 1,600–4,500 rpm		2018–
B58B30C
B58B30O1285 kW (382 hp)
at 5,000–6,500 rpm
B58B30M2280 kW (375 hp)
at 5,200-6,250 rpm		520 N⋅m (384 lb⋅ft)
at 1850-5000 rpm		2022-
S58B30T0338 kW (453 hp)
at 6,250 rpm		550 N⋅m (406 lb⋅ft)
at 2,600–5,950 rpm		2023–
353 kW (473 hp)
at 6,250 rpm		2020–
620 N⋅m (457 lb⋅ft)
at 2,600–5,950 rpm		2019–
375 kW (503 hp)
at 6,250 rpm		650 N⋅m (479 lb⋅ft)
at 2,600–5,950 rpm

B58B30M0: 240 kW (322 HP) version

Applications:

B58B30M0: 250 kW (335 HP) version

Applications:

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:

B58B30M2: 280 kW (375 HP)

S58

BMW S58 engine
S58 Engine.jpg
Overview
Production2019–present
Layout
Configuration Straight-six
Displacement 3.0 L (2,993 cc)
Cylinder bore 84  mm (3.3  in)
Piston stroke 90  mm (3.5  in)
Cylinder block materialClosed-deck aluminum
Cylinder head materialAluminum
Valvetrain DOHC w/ VVT & VVL
Compression ratio 9.3:1
RPM range
Max. engine speed 7,200 RPM
Combustion
Turbocharger Twin-Turbo with air-to-liquid intercooler
Fuel system Direct injection
Fuel type Petrol
Output
Power output 338–375  kW (453–503  hp)
Torque output 550–650 N⋅m (406–479 lb⋅ft)
Chronology
Predecessor BMW 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. [30]

The S58 features twin mono-scroll turbochargers, a compression ratio of 9.3:1, a redline at 7,200 rpm with the bore and the stroke at 84 mm × 90 mm (3.31 in × 3.54 in). It also features a forged chrome molybdenum heat-treated steel crankshaft, plus forged steel connecting rods and forged aluminum pistons. The pistons are forged by Mahle and feature their proprietary anti-friction coating. [31]

Like the B58, the S58 also features direct fuel injection, variable valve timing (called double Vanos by BMW), and variable valve lift (called Valvetronic by BMW).

As opposed to the B58, the S58 features a slightly smaller displacement, increased bore, decreased stroke, and larger valves. Compression is decreased to 9.3:1 from 11.0:1. The S58 favors top-end power and has a higher redline of 7,200 RPM. [31]

S58B30T0: 338 kW (460 HP)

S58B30T0: 344 kW (461 HP)

S58B30T0: 353 kW (473 HP)

Applications:

S58B30T0: 364 kW (488 HP)

S58B30T0: 375 kW (510 HP)

Applications:

S58B30T0: 405 kW (550 HP)

Applications:

S58B30T0: 412 kW (560 HP)

Applications:

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References

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  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. ↑ "WardsAuto Names Wards 10 Best Engines & Propulsion Systems Winners for 2023" (PDF). WardsAuto. September 14, 2023.
  11. ↑ bimmertips (2018-08-15). "BMW TwinPower (Twin Scroll) Turbo System explained". BIMMERtips.com. Retrieved 2022-12-14.
  12. ↑ "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.
  13. ↑ "BMW B58 FAQ - Maintenance, Problems, Tuning & More". bmwtuning.co. 2020-09-25. Retrieved 2022-12-14.
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  15. ↑ "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.
  16. ↑ Boeriu, Horatiu (11 December 2015). "BMW's B58 engine among Wards' 10 Best engines for 2016". BMWBlog. Retrieved 21 May 2016.
  17. ↑ Stoyanov, Aleksandar (2021-04-30). "Watch the First Teardown of the B58 Engine Powering the 2020 Supra and Z4". Automobile Fanatics. Retrieved 2022-12-14.
  18. ↑ "How Much Power Can The BMW B58 Handle? - B58 Engine Limits". bmwtuning.co. 2021-03-09. Retrieved 2022-12-14.
  19. ↑ "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.
  20. ↑ "BMW B58 vs B58TU - Technical Update - What Is the Difference?". bmwtuning.co. 2020-02-09. Retrieved 2022-12-14.
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  23. ↑ 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.
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  26. ↑ "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.
  27. ↑ "The Morgan Plus Six comes with Supra power". 5 March 2019. Archived from the original on 5 March 2019. Retrieved 5 March 2019.
  28. ↑ "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.
  29. ↑ "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.
  30. ↑ "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.
  31. 1 2 "BMW S58 Tuning Potential - The Most Capable BMW Engine Ever?". bmwtuning.co. 2021-04-25. Retrieved 2022-12-14.
  32. ↑ "A Closer Look At The Future BMW M3/M4 Engine – The S58". www.bmwblog.com. 10 June 2019. Retrieved 2019-06-17.
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