Introduction
The BMW i7 eDrive50 (G70) represents the future of luxury electric driving, combining flagship comfort with advanced EV technology.
At AUTOSPORT TYREWORLD Adelaide, we regularly service premium EVs like the i7, ensuring correct tyre fitment, wheel compatibility, and safe torque specifications.
This guide covers:
-
All factory tyre sizes
-
OEM wheel & rim specifications
-
PCD, centre bore & offsets
-
Correct wheel torque specs
-
Best tyre recommendations for Adelaide conditions
BMW i7 eDrive50 Factory Tyre Sizes
The i7 eDrive50 typically runs staggered or square luxury EV setups depending on trim.
20 Inch (Comfort Setup)
-
255/45R20 (Front)
-
285/40R20 (Rear)
21 Inch (Premium Setup)
-
255/40R21 (Front)
-
285/35R21 (Rear)
Optional Square Setup
-
255/45R20 (All around)
These setups balance:
-
Ride comfort (important for EV luxury)
-
Rolling resistance (range efficiency)
-
High-speed stability
BMW i7 eDrive50 Factory Wheel Specs
-
Wheel Size Range: 20" – 21" (some markets up to 22")
-
Width:
-
Front: 8.5J – 9J
-
Rear: 9.5J – 10J
-
-
Offset (ET): +30 to +40
Bolt Pattern (PCD)
-
5x112
This is standard across modern BMW G-Series platforms.
Centre Bore
-
66.6 mm
This is critical when selecting aftermarket wheels — incorrect centre bore can cause vibration.
Wheel Bolt & Thread Spec
-
Bolt Type: M14 x 1.25
-
Seat Type: 60° Conical
Torque Wrench Specification
-
140 Nm (103 ft-lbs) for modern BMW (M14 bolts)
Important notes:
-
Always torque when wheels are cold
-
Re-check after 50–100 km
-
Avoid using impact guns for final tightening
EV-Specific Tyre Considerations (BMW i7)
Because the i7 is a fully electric luxury sedan, tyre selection is critical:
Key Requirements
-
High load rating (heavy EV battery)
-
Low rolling resistance (range efficiency)
-
Low noise (luxury cabin)
-
Strong sidewall stability (instant torque)
Recommended Tyres (AUTOSPORT TYREWORLD Adelaide)
Premium Comfort (Best Overall)
-
Continental UltraContact UC7
-
Michelin Primacy 5
Performance EV Option
-
Continental SportContact 7
-
Michelin Pilot Sport 5
Quiet / Luxury Focus
-
Continental EcoContact 6 (best for range)
Common Upgrade Fitments
At AUTOSPORT TYREWORLD, popular upgrades include:
-
21" staggered luxury setups
-
Lightweight forged wheels (RAYS / BBS)
-
EV-specific tyres for Tesla-style performance
Why Correct Fitment Matters
Incorrect wheel or tyre setup can cause:
-
Reduced EV range
-
Increased road noise
-
Premature tyre wear
-
Suspension stress
We ensure:
-
Correct load index
-
Proper rolling diameter
-
OEM-safe 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