BMW 420i Tyre Size Guide
Wheel Specs, PCD, Centre Bore & Torque Settings
The BMW 420i is part of the 4 Series range, offering:
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Sporty coupe design
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Rear-wheel drive or xDrive AWD (G22)
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Balance between comfort and performance
Tyre selection plays a key role in:
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Ride comfort
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Noise levels
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Handling and stability
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Fuel efficiency
Autosport Tyreworld specialises in European vehicles and premium tyre fitment.
BMW 420i Wheel Specifications
F32 (2014–2020)
| Specification | Value |
|---|---|
| Bolt Pattern (PCD) | 5x120 |
| Centre Bore | 72.6 mm |
| Wheel Bolt Size | M14 x 1.25 |
| Wheel Torque | 140 Nm |
G22 (2021–Present)
| Specification | Value |
|---|---|
| Bolt Pattern (PCD) | 5x112 |
| Centre Bore | 66.6 mm |
| Wheel Bolt Size | M14 x 1.25 |
| Wheel Torque | 140 Nm |
BMW 420i Factory Tyre Sizes
F32 420i
| Tyre Size | Rim Size |
|---|---|
| 225/50R17 | 17x7.5 |
| 225/45R18 | 18x8 |
Optional staggered setup:
Front: 225/45R18
Rear: 255/40R18
G22 420i
| Tyre Size | Rim Size |
|---|---|
| 225/50R17 | 17x7.5 |
| 225/45R18 | 18x8 |
| 225/40R19 | 19x8 |
Optional staggered setup:
Front: 225/40R19
Rear: 255/35R19
Runflat vs Non-Runflat Tyres
Most BMW 420i models are fitted with runflat tyres.
Runflat tyres:
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Allows driving after puncture
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No spare wheel required
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Firmer ride
Non-runflat tyres:
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Better comfort
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Lower road noise
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Improved grip
Autosport Tyreworld can assist with runflat conversion for better ride quality.
Popular Tyre Upgrade Options
Comfort Setup
| Tyre Size | Notes |
|---|---|
| 225/45R18 | Best balance |
| 225/50R17 | Maximum comfort |
Sport Upgrade
| Position | Tyre Size |
|---|---|
| Front | 235/40R18 |
| Rear | 265/35R18 |
Aggressive Setup
| Position | Tyre Size |
|---|---|
| Front | 235/35R19 |
| Rear | 265/30R19 |
Before upgrading:
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Maintain rolling diameter
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Ensure clearance
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Match front/rear sizes correctly
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Consider comfort vs performance
Recommended Tyres for BMW 420i
Comfort & Daily Driving
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Continental UltraContact UC7
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Michelin Primacy 4
Balanced Performance
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Michelin Pilot Sport 5
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Continental MaxContact MC7
Budget Option
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Kumho PS71
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Hankook Ventus Prime
BMW 420i Wheel Torque Specification
Recommended torque:
140 Nm
Installation tips:
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Tighten in star pattern
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Torque when cold
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Recheck after 50–100 km
Incorrect torque may cause vibration or wheel issues.
Need Tyres for Your BMW 420i?
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 tyres, comfort upgrades and performance fitments.