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 | |
|---|---|
B58B30O1 in a G22 M440i | |
| Overview | |
| Manufacturer | BMW |
| Production | 2015–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 material | Closed-deck aluminium |
| Cylinder head material | Aluminum |
| 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 |
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 edit
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]
Another engine revision in 2022 added port fuel injection to complement the existing direct injection system for better emissions and functionality.[21]
Models edit
| 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 | |||
| B58B30O1 | 285 kW (382 hp) at 5,000–6,500 rpm | ||
| B58B30M2 | 280 kW (375 hp) at 5,200-6,250 rpm | 520 N⋅m (384 lb⋅ft) at 1850-5000 rpm | 2022- |
| S58B30T0 | 338 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 edit
Applications:
- 2015–2019 F30/F31/F34 340i
- 2016–2019 F32/F33/F36 440i
- 2016–2019 G11/G12 740i/Li
B58B30M0: 250 kW (335 HP) version edit
Applications:
B58B30M0: 265 kW (355 HP) version edit
This version was used for 3-/4-Series with the "M Performance Power and Sound Kit".
Applications:
- 2016–2019 F30/F31/F34 340i[24]
- 2016–2019 F32/F33/F36 440i
- 2017–2019 G01 X3 M40i[25]
- 2018–2019 G02 X4 M40i
B58B30M1: 250 kW (335 HP) edit
Applications:
- 2018–2023 G05 X5 xDrive40i/sDrive40i[26]
- 2018–2023 G07 X7 xDrive40i
- 2018–present G29 Z4 M40i (in countries subject to EU emissions standards)[27]
- 2019–present Toyota GR Supra
- 2020–2023 G30/G31 540i
- 2020–2023 G32 640i
- 2020–2023 G06 X6 xDrive40i
- 2020–2022G11/G12 740i
- 2019–present G14/G15/G16 840i
- 2019–present Morgan Plus Six[28]
B58B30C: 250 kW (335 HP) edit
- 2020 J29/DB Toyota Supra[29]
- 2022–present Ineos Grenadier (detuned to 286 hp)
B58B30O1: 285 kW (382 HP) edit
Applications:
- 2018–present G29 Z4 M40i (in countries not subject to EU emissions standards)
- 2019–present G20/G21 M340i
- 2020–present G01 X3 M40i
- 2019–present G02 X4 M40i
- 2020–present G22/G23/G26 M440i
- 2021–present Toyota Supra[30] (in countries not subject to EU emissions standards)
- 2021–present G42 M240i
- 2021–present Boldmen CR4
B58B30M2: 280 kW (375 HP) edit
S58 edit
| BMW S58 engine | |
|---|---|
| Overview | |
| Production | 2019–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 material | Closed-deck aluminum |
| Cylinder head material | Aluminum |
| 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.[31]
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.[32]
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.[32]
S58B30T0: 338 kW (460 HP) edit
- 2023–present G87 M2
S58B30T0: 344 kW (461 HP) edit
- 2019–2022 G20 Alpina B3
S58B30T0: 353 kW (473 HP) edit
Applications:
S58B30T0: 364 kW (488 HP) edit
- 2023–present G20 Alpina B3
- 2022–present G26 Alpina B4 Gran Coupe
S58B30T0: 375 kW (510 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
S58B30T0: 405 kW (550 HP) edit
Applications:
S58B30T0: 412 kW (560 HP) edit
Applications:
- 2023 G82 BMW 3.0 CSL
References edit
- ^ 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.
- ^ "BMW F30 LCI 340i". www.paultan.org. from the original on 2016-06-10. Retrieved 2016-05-20.
- ^ Meiners, Jens (22 April 2011). . CARandDriver. Archived from the original on 12 May 2016. Retrieved 21 May 2016.
- ^ Murphy, Tom (10 December 2015). "Electrics Charge Up 10 Best Engines List". wardsauto.com. from the original on 13 January 2016. Retrieved 16 May 2020.
- ^ Murphy, Tom (12 December 2016). "Seven Turbos, Three Hybrids Share Wards 10 Best Engines Honors". wardsauto.com. from the original on 13 December 2016. Retrieved 16 May 2020.
- ^ Murphy, Tom (14 December 2018). "2019 Wards 10 Best Engines: Gasoline, Diesel, Electrification Honored". wardsauto.com. from the original on 13 December 2018. Retrieved 16 May 2020.
- ^ Murphy, Tom (20 December 2019). "All-Inclusive List for 2020 Wards 10 Best Engines & Propulsion Systems". wardsauto.com. from the original on 20 December 2019. Retrieved 16 May 2020.
- ^ "BMW F97 X3 M launching in 2019 with new S58 engine and 450 horsepower". www.bmwblog.com. 13 March 2017. Retrieved 28 December 2017.
- ^ "BMW Developing S58 Engine as S55 Successor, Will Debut in 2019 X3 M". www.autoevolution.com. 18 March 2017. from the original on 29 December 2017. Retrieved 28 December 2017.
- ^ "WardsAuto Names Wards 10 Best Engines & Propulsion Systems Winners for 2023" (PDF). WardsAuto. September 14, 2023.
- ^ bimmertips (2018-08-15). "BMW TwinPower (Twin Scroll) Turbo System explained". BIMMERtips.com. Retrieved 2022-12-14.
- ^ "BMW's New B58 3-liter Engine Won't Be a Tuner's Delight". www.autoevolution.com. 12 September 2015. from the original on 1 January 2018. Retrieved 30 December 2017.
- ^ "BMW B58 FAQ - Maintenance, Problems, Tuning & More". bmwtuning.co. 2020-09-25. Retrieved 2022-12-14.
- ^ "Big Changes Under Hood in '16 BMW 3-Series". www.wardsauto.com. 15 October 2015. from the original on 1 January 2018. Retrieved 30 December 2017.
- ^ "2017 BMW 2 Series Lineup Revealed with New Engines". www.automobilemag.com. 17 May 2016. from the original on 31 December 2017. Retrieved 30 December 2017.
- ^ Boeriu, Horatiu (11 December 2015). "BMW's B58 engine among Wards' 10 Best engines for 2016". BMWBlog. Retrieved 21 May 2016.
- ^ 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.
- ^ "How Much Power Can The BMW B58 Handle? - B58 Engine Limits". bmwtuning.co. 2021-03-09. Retrieved 2022-12-14.
- ^ "How is the B58 engine (340i) improved from the venerable N55? We have answers". www.bimmerfest.com. from the original on 31 December 2017. Retrieved 30 December 2017.
- ^ "BMW B58 vs B58TU - Technical Update - What Is the Difference?". bmwtuning.co. 2020-02-09. Retrieved 2022-12-14.
- ^ https://bimmerlife.com/2022/04/22/bmw-b58-inline-six-receives-technical-update/
- ^ Sheehan, Sam (16 May 2016). "New bmw m140i m240i and plug 7 series range revealed". autocar.co.uk. from the original on 20 May 2016. Retrieved 22 May 2016.
- ^ BMW (24 September 2017). "BMW G30 5 series specifications". bmw.de. from the original on 24 September 2017. Retrieved 24 September 2017.
- ^ BMW (12 June 2018). . www.bmw.de. Archived from the original on 12 June 2018. Retrieved 12 June 2018.
- ^ . www.bmw.de. Archived from the original on 2017-10-13. Retrieved 2017-10-12.
- ^ "The all-new BMW X5: The Prestige SAV with the most innovative technologies". www.press.bmwgroup.com. from the original on 2018-06-12. Retrieved 2018-06-12.
- ^ "2020 BMW Z4 M40i Prototype Driven: The Supra's German Brother". Car and Driver. from the original on 2018-06-12. Retrieved 2018-06-12.
- ^ "The Morgan Plus Six comes with Supra power". 5 March 2019. from the original on 5 March 2019. Retrieved 5 March 2019.
- ^ "2019 Toyota Supra engine deep dive: This isn't a 2JZ". Motor Authority. from the original on 28 August 2019. Retrieved 28 August 2019.
- ^ "2019 Toyota Supra engine deep dive: This isn't a 2JZ". Motor Authority. from the original on 28 August 2019. Retrieved 28 August 2019.
- ^ "The all-new BMW X3 M and the all-new BMW X4 M." www.press.bmwgroup.com. from the original on 2019-06-17. Retrieved 2019-06-17.
- ^ a b "BMW S58 Tuning Potential - The Most Capable BMW Engine Ever?". bmwtuning.co. 2021-04-25. Retrieved 2022-12-14.
- ^ "A Closer Look At The Future BMW M3/M4 Engine – The S58". www.bmwblog.com. 10 June 2019. Retrieved 2019-06-17.