BMW 840i Tyre Size Guide
Wheel Specs, PCD, Centre Bore & Torque Settings
The BMW 840i is part of the 8 Series range, offering:
Need tyres for your BMW 840i in Adelaide?
Autosport Tyre World Magill can help confirm the correct tyre size, load rating, wheel fitment and alignment needs before you order.
Call Magill: 0452 641 023 Get fitted tyre quote View tyres Book wheel alignment
Tyre options and fitment help for BMW 840i
Use these links to check available tyre options by size. If you are unsure which size suits your exact model, send us your tyre placard photo before ordering.
| Size / service | Best use | Shop or search | Fitment check |
|---|---|---|---|
| 245/45R18 | Performance, comfort and upgrade options | View 245/45R18 tyre options | Check fitted availability |
| 245/40R19 | Performance, comfort and upgrade options | View 245/40R19 tyre options | Check fitted availability |
| 275/35R19 | 4WD, touring, AT/HT tyre options | View 275/35R19 tyre options | Check fitted availability |
| 245/35R20 | Performance, comfort and upgrade options | View 245/35R20 tyre options | Check fitted availability |
| 275/30R20 | 4WD, touring, AT/HT tyre options | View 275/30R20 tyre options | Check fitted availability |
| 255/35R20 | Performance, comfort and upgrade options | View 255/35R20 tyre options | Check fitted availability |
| Wheel alignment | Recommended after tyre or wheel changes | Wheel alignment Adelaide | Call Magill |
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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.
Need tyres or wheel alignment for your BMW 840i in Adelaide?
Send us your tyre size, vehicle model or tyre placard photo and the team at Autosport Tyre World Magill will confirm suitable options, availability and fitted advice.
Autosport Tyre World Magill: 647 Magill Road, Magill SA 5072. Phone 0452 641 023.
Call Magill Get fitted tyre quote View tyres Wheel alignment Adelaide