MG S9 PHEV (2027) Wheel Fitment

MG S9 PHEV (2027): 5x112 bolt pattern, 66.6mm center bore, OE 20x8.5J ET40. Forged wheel fitment specs from ANKUSI.

Bolt Pattern5x112

Wheel Bolt/NutM12x1.5 Nut

Center Bore66.6mm

Wheel Load Rating900–1250 kg/wheel (SUV segment reference)

Year2027

Category5-Lug Large Sedan/SUV

✓ Verified by ANKUSI's Engineering Team — IATF 16949 & ISO 9001 certified forged wheel manufacturer, TÜV/SFI/VIA compliant. See our factory & certifications →

Wheel Size & Offset at a Glance

MG S9 PHEV wheel size and offset comparison by configuration
Configuration	Wheel Size & Offset
Flush Fitment	21x9.5J at ET32 offset

How to Read Wheel Offset & Measurements

Use these two references before ordering: the left diagram shows where each spec (PCD, center bore, offset, width and diameter) is measured on the wheel; the right diagram shows how positive, zero and negative offset shift the wheel face relative to the hub centerline.

Diagram showing wheel measurement points: centerline, center bore diameter, PCD, offset, rim width and diameter — Centerline, center bore, PCD, offset, width & diameter

Diagram comparing positive, zero, and negative wheel offset relative to the wheel centerline — Positive vs. zero vs. negative offset

ANKUSI Engineering Expert Advice

Because an SUV's center of gravity is already higher than a sedan's, anything added at the corners — including wheel weight — has an outsized effect on handling balance. A forged wheel lets us hit the visual stance owners want without adding the rotational mass a cast wheel of the same strength would carry.

The MG S9 PHEV ships from the factory on a 5x112 bolt pattern with a 66.6mm center bore and a 20x8.5J ET40 wheel. Our flush reference for the MG S9 PHEV is 21x9.5J ET32.; our maximum aggressive reference is 22x10J ET28. — beyond that, expect clearance issues against the fender liner without further modification.

MG S9 PHEV OE Wheel Specs

The MG S9 PHEV ships from the factory on 5x112 bolt pattern wheels with a 66.6mm center bore. The stock wheel size is 20x8.5J ET40, offering a balanced ride that suits most owners without any rubbing or clearance concerns.

Why the factory spec works for most owners:

Balances ride comfort with steering response and highway efficiency.
Wide tire and wheel availability at the factory diameter keeps replacement costs low.
Lower unsprung weight than larger aftermarket wheels helps ride quality and acceleration.
Guaranteed clearance against brake calipers and suspension components.

Flush Fitment

For a flush look without any body modification, most MG S9 PHEV owners run 21x9.5J ET32. This setup tucks the wheel face closer to the fender lip while staying within safe load and clearance limits.

Maximum Aggressive Fitment

Owners chasing a more aggressive stance push to 22x10J ET28. Chassis: PHEV platform; use lowering springs rated for battery weight. Wheels: 5x112 PCD standard. Brakes: Substantial caliper clearance required. Tires: 255/45 R20. Clearance should be verified before ordering, especially on lowered cars.

5-Tier Configuration Options

A – Factory-Style: 20x8.5J ET40

Recommended setup: Factory-matched forged replacement

Economy impact: None

Best for: Daily drivers, warranty-conscious owners

Appearance 5/10 | Comfort 10/10 | Install difficulty ★☆☆☆

Estimated cost range: $$ (OE replacement)

B – Comfortable Upgrade: 20.5x9J ET36

Recommended setup: Direct bolt-on, factory suspension

Economy impact: Minimal

Best for: Owners who want a mild upgrade with no compromise

Appearance 6/10 | Comfort 9/10 | Install difficulty ★☆☆☆

Estimated cost range: $$ - $$$

C – Balanced / Flush Fit: 21x9.5J ET32

Recommended setup: Flush forged wheels, stock or mild lowering

Economy impact: Slight increase

Best for: Enthusiasts wanting a flush look daily

Appearance 8/10 | Comfort 7/10 | Install difficulty ★★☆☆

Estimated cost range: $$$

D – Aggressive: 21.5x10J ET30

Recommended setup: Wider forged wheels, coilovers or lowering springs

Economy impact: Noticeable increase

Best for: Show-and-drive builds

Appearance 9/10 | Comfort 5/10 | Install difficulty ★★★☆

Estimated cost range: $$$$

E – Max Aggressive: 22x10J ET28

Recommended setup: Chassis: PHEV platform; use lowering springs rated for battery weight. Wheels: 5x112 PCD standard. Brakes: Substantial caliper clearance required. Tires: 255/45 R20.

Economy impact: Significant increase

Best for: Show builds, weekend cars

Appearance 10/10 | Comfort 3/10 | Install difficulty ★★★★

Estimated cost range: $$$$$

Performance Comparison Matrix

Wheel Spec	Tier A	Tier B	Tier C	Tier D	Tier E
Wheel Spec	20x8.5J ET40	20.5x9J ET36	21x9.5J ET32	21.5x10J ET30	22x10J ET28
Economy Impact	None	Minimal	Slight increase	Noticeable increase	Significant increase
Appearance	5/10	6/10	8/10	9/10	10/10
Comfort	10/10	9/10	7/10	5/10	3/10
Install Difficulty	★☆☆☆	★☆☆☆	★★☆☆	★★★☆	★★★★
Cost Range	$$ (OE replacement)	$$ - $$$	$$$	$$$$	$$$$$
Best For	Daily drivers, warranty-conscious owners	Owners who want a mild upgrade with no compromise	Enthusiasts wanting a flush look daily	Show-and-drive builds	Show builds, weekend cars

Real-World Reference Cases

The following builds are compiled from typical ANKUSI customer configurations for this platform and are illustrative, not individually verified real-world builds.

Case 1: Daily Driver (Factory-Style)

Profile: Commuter prioritizing comfort and reliability.

Setup: 20x8.5J ET40 forged wheels, factory suspension.

Cost: $$ (OE replacement)

Outcome: No clearance issues, factory ride quality retained.

Case 2: Balanced Enthusiast (Balanced / Flush Fit)

Profile: Weekend driver wanting a flush stance without sacrificing daily usability.

Setup: 21x9.5J ET32 forged wheels, mild lowering springs.

Cost: $$$

Outcome: Flush fitment with acceptable ride comfort for daily use.

Case 3: Show Build (Max Aggressive)

Profile: Show-and-shine build prioritizing stance over comfort.

Setup: 22x10J ET28 forged wheels. Chassis: PHEV platform; use lowering springs rated for battery weight. Wheels: 5x112 PCD standard. Brakes: Substantial caliper clearance required. Tires: 255/45 R20.

Cost: $$$$$

Outcome: Maximum aggressive stance; clearance verified case-by-case.

Decision Guide

1. What is this car mainly used for? Daily driving favors Tier A or B; weekend/show use favors Tier D or E.

2. What is your budget? Tiers A-B keep cost low; Tiers D-E cost significantly more in wheels, tires, and possible suspension work.

3. Is fuel economy and ride comfort a priority? If yes, stay at Tier A or B; heavier, wider wheels at Tier D-E reduce efficiency and comfort.

4. Still unsure? Tier C (Balanced / Flush Fit) is the safe default for most MG S9 PHEV owners.

Offset & Backspacing Reference

Backspacing is calculated as: wheel width (in) / 2 + offset (mm) / 25.4 + 0.5.

OE 20x8.5J ET40: backspacing ≈ 6.32"
Flush 21x9.5J ET32: backspacing ≈ 6.51"
Max 22x10J ET28: backspacing ≈ 6.6"

Use our offset & backspacing calculator to fine-tune your fitment, or contact ANKUSI for a custom forged wheel quote for your MG S9 PHEV.

Frequently Asked Questions

What bolt pattern (PCD) does the MG S9 PHEV use?

The 2027 MG S9 PHEV uses a 5x112 bolt pattern.

How many lug bolts does the MG S9 PHEV use?

The MG S9 PHEV uses a 5-lug bolt pattern (5x112), so you need a 5-lug forged wheel to bolt straight on.

What does a flush wheel fitment look like on the MG S9 PHEV?

For a flush look with minimal to no rubbing, we recommend 21x9.5J at ET32 offset as a starting point on a stock or mildly lowered MG S9 PHEV.

Do I need wheel spacers for my MG S9 PHEV?

No. ANKUSI forges each wheel to your exact target offset, including the flush or max specs above, so you get the correct fitment without stacking spacers. Spacers are typically only used to push out an existing OE-offset wheel without replacing it, which isn't necessary when you're ordering a custom-offset forged wheel.

How do I calculate wheel backspacing for my MG S9 PHEV?

Backspacing (in inches) = wheel width (in) ÷ 2 + offset (mm) ÷ 25.4 + 0.5 (flange allowance). For example, the flush spec above works out to roughly 6.51" of backspacing.

What's the difference between wheel offset and backspacing?

Offset is the distance in millimeters from the wheel's true centerline to its mounting face (positive offset pulls the wheel in, negative pushes it out). Backspacing is the distance in inches from the mounting face to the back edge of the wheel barrel. They describe the same fitment from two different reference points, which is why ANKUSI lists both above — some shops and tuning guides quote offset, others quote backspacing.

Can I run staggered wheels (different sizes front and rear) on my MG S9 PHEV?

The MG S9 PHEV runs the same wheel size front and rear from the factory, so staggered fitment is not required. ANKUSI can still forge a staggered set (wider rear) on request if you want a more aggressive stance.

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