BMW 3: Wheels and tires
BMW 3 Series G20 (2018-2026) Owners Manual / Wheels and tires
- Tire inflation pressure
- Tire identification marks
- Tire tread
- Changing wheels and tires
- Run-flat tires
- Mobility System
- Snow chains
- Tire Pressure Monitor TPM
- Concept, General information, Safety information
- Tire settings
- Messages: for tires without special approval
- Actions in the event of a flat tire
- System limits
- Flat Tire Monitor FTM
- Changing wheels/tires
- General information, Safety information
- Securing the vehicle against rolling
- Jacking points for the vehicle jack
- Emergency wheel
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Tire inflation pressure
General information
The tire characteristics and tire inflation pressure
influence the following:
The service life of the tires.
Road safety.
Driving comfort.
Fuel consumption.
Safety informatio
Tire identification marks
Tire size
245/45 R 18 96 Y
245: nominal width in mm
45: aspect ratio in %
R: radial tire code
18: rim diameter in inches
96: load rating, not for ZR tires
Y: speed rating, before the R on ZR tires
Max
Tire tread
Summer tires
Do not drive with a tire tread of less than
0.12 in/3 mm, otherwise there is an increased
risk of hydroplaning.
Winter tires
Do not drive with a tire tread of less than
0.16 in/4 mm, as s
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Fuel preparation
The fuel preparation has again been adapted to meet the emission legislation
requirements. The high
pressure pump and the injectors have been revised and designed for an fuel
injection pressure of
350 bar (5076 psi).
Overview of fuel preparation
Fuel delivery line
Rail pressure sensor
Di
Monitoring functions
High-voltage interlock loop
The SME control unit evaluates the signal of the high-voltage interlock loop
and checks whether there
is an open circuit with this circuit. In the event of an open circuit, the
battery management electronics
control unit can cause the high-voltage system to perform a qu
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