BMW 840i Tyre Size Guide
Wheel Specs, PCD, Centre Bore & Torque Settings
The BMW 840i is part of the 8 Series range, offering:
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Turbocharged inline-6 performance
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Rear-wheel drive or xDrive AWD (depending on variant)
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Luxury grand touring comfort
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Coupe, Convertible and Gran Coupe body styles
Tyres are critical for:
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High-speed stability
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Cornering grip
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Ride comfort on long trips
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Noise reduction
Autosport Tyreworld specialises in BMW performance and luxury tyre fitments.
BMW 840i Wheel Specifications
G14 / G15 / G16 (2019–Present)
| Specification | Value |
|---|---|
| Bolt Pattern (PCD) | 5x112 |
| Centre Bore | 66.6 mm |
| Wheel Bolt Size | M14 x 1.25 |
| Wheel Torque | 140 Nm |
BMW 840i Factory Tyre Sizes
Standard Setup
| Tyre Size | Rim Size |
|---|---|
| 245/45R18 | 18x8 |
Performance Setup (Most Common)
| Position | Tyre Size | Rim Size |
|---|---|---|
| Front | 245/40R19 | 19x8 |
| Rear | 275/35R19 | 19x9 |
Optional 20” Setup
| Position | Tyre Size |
|---|---|
| Front | 245/35R20 |
| Rear | 275/30R20 |
RWD vs xDrive Considerations
RWD Models
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More flexibility with tyre choice
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Can run staggered or square setups
xDrive Models
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Must maintain rolling diameter
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Avoid mixing tyre brands
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Replace tyres as a full set
Incorrect setup may cause drivetrain issues.
Runflat vs Non-Runflat Tyres
Most BMW 840i models are equipped with runflat tyres.
Runflat tyres:
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No spare required
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Can drive after puncture
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Firmer ride
Non-runflat tyres:
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Better comfort
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Lower noise
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Improved grip
Autosport Tyreworld often recommends non-runflat upgrades for improved driving experience.
Popular Tyre Upgrade Options
Comfort + Daily Driving
| Tyre Size |
|---|
| 245/45R18 |
| 245/40R19 |
Performance Setup
| Position | Tyre Size |
|---|---|
| Front | 255/35R20 |
| Rear | 285/30R20 |
Aggressive Setup
| Position | Tyre Size |
|---|---|
| Front | 265/35R20 |
| Rear | 295/30R20 |
Before upgrading:
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Maintain rolling diameter
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Ensure wheel clearance
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Match tyre brands
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Consider driving style
Recommended Tyres for BMW 840i
Comfort + Touring
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Continental UltraContact UC7
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Michelin Primacy 4
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Bridgestone Turanza
Performance Driving
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Michelin Pilot Sport 5
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Continental MaxContact MC7
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Bridgestone Potenza Sport
High Performance Upgrade
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Continental SportContact 7
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Michelin Pilot Sport 4 SUV
BMW 840i Wheel Torque Specification
Recommended torque:
140 Nm
Installation tips:
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Torque when cold
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Tighten in star pattern
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Recheck after 50–100 km
Need Tyres for Your BMW 840i?
Visit Autosport Tyreworld:
Magill
647 Magill Road, Magill SA 5072
0452 641 023
Wingfield
411 Grand Junction Road, Wingfield SA 5013
0433 645 411
Clarence Gardens
911 South Road, Clarence Gardens SA 5039
0420 299 911
We specialise in BMW performance vehicles and premium tyre fitments.