Introduction
The BMW i7 M70 xDrive (G70) is the most powerful variant of the i7 lineup, delivering extreme electric performance with dual motors, AWD traction, and flagship luxury.
At AUTOSPORT TYREWORLD Adelaide, we specialise in high-performance EV tyre fitment — ensuring the correct tyre size, load rating, and wheel specifications for vehicles like the i7 M70.
This guide covers:
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All factory tyre sizes
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OEM wheel & rim specifications
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PCD, centre bore & offsets
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Correct torque specifications
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Best performance EV tyres for Adelaide roads
BMW i7 M70 Factory Tyre Sizes
The i7 M70 comes standard with larger staggered performance setups to handle its high power output.
21 Inch (Standard Performance Setup)
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255/40R21 (Front)
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285/35R21 (Rear)
22 Inch (Optional High-Performance Setup)
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255/35R22 (Front)
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285/30R22 (Rear)
These setups are designed for:
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Maximum grip under acceleration
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High-speed stability
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Sport-oriented handling
BMW i7 M70 Factory Wheel Specs
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Wheel Diameter: 21" – 22"
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Front Width: 9J
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Rear Width: 10J
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Offset (ET): +30 to +40
Bolt Pattern (PCD)
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5x112
Standard BMW G-Series fitment.
Centre Bore
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66.6 mm
Ensures perfect hub-centric fitment and eliminates vibration.
Wheel Bolt Specifications
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Bolt Type: M14 x 1.25
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Seat Type: 60° Conical
Torque Wrench Specification
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140 Nm
Best practices:
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Tighten in a star pattern
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Re-check torque after 50–100 km
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Avoid using impact tools for final torque
Performance EV Tyre Requirements (i7 M70)
The i7 M70 produces extreme torque and weight, making tyre choice critical.
Key Requirements
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Ultra-high load rating
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Maximum grip under acceleration
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Heat resistance for performance driving
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Low noise for luxury comfort
Recommended Tyres (AUTOSPORT TYREWORLD Adelaide)
Maximum Performance
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Continental SportContact 7
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Michelin Pilot Sport 5
Performance + Comfort Balance
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Continental PremiumContact 6
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Michelin Pilot Sport 4S
Quiet High-End Option
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Continental UltraContact UC7
Popular Upgrade Options
At AUTOSPORT TYREWORLD, i7 M70 owners commonly upgrade to:
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22" forged wheel setups (RAYS / BBS)
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Wider rear tyre setups for traction
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EV-optimised performance tyres
Why Proper Fitment Matters
Incorrect tyre or wheel setup can lead to:
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Loss of traction under acceleration
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Reduced EV range
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Excess tyre wear
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Safety issues at high speed
We ensure:
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Correct rolling diameter
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Proper load rating
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OEM-compliant fitment
Visit AUTOSPORT TYREWORLD Adelaide
Professional EV tyre fitting, balancing, and wheel alignment available at:
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