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Michelin
Michelin Primacy MXM4 225/40R18XL 92V - 37330
Michelin Primacy MXM4 225/40R18XL 92V - 37330
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Shop the Michelin Primacy MXM4 225/40R18 at ThreePiece.us — free shipping on every order, Affirm financing available, and fast delivery nationwide.
What 225/40R18 means
In the size 225/40R18, 225 is the section width in millimeters (8.86 in), 40 is the aspect ratio — the sidewall stands 40% as tall as the tire is wide, or 90.0 mm (3.54 in) — R denotes radial construction, and 18 is the wheel diameter in inches. That works out to an overall diameter of about 25.09 inches, turning roughly 804 revolutions per mile. Overall diameter is what matters for speedometer accuracy and clearance when you change sizes, so compare it — not just the width — against your current tire.
The service description on this tire decodes to a load index of 92 — a maximum load of 1,389 lbs per tire. The speed symbol V corresponds to a maximum sustained speed of 149 mph.
Load Range E corresponds to a 10-ply rating.
Specifications
| Size | 225/40R18XL |
| Tire Type | All Season |
| Service Description | 92V |
| Load Index | 92 |
| Speed Rating | V |
| Load Range | Extra Load |
| Section Width (mm) | 225 |
| Aspect Ratio | 40 |
| Overall Diameter (in) | 25.1 |
| Tread Depth (/32") | 9.5 |
| Treadwear | 500 |
| Traction Grade | A |
| Temperature Grade | A |
| UTQG | 500AA |
| Warranty | 30K |
Frequently asked questions
What are the treadwear and warranty ratings on the Michelin Primacy MXM4?
This tire carries a treadwear grade of 500, traction grade A, temperature grade A under UTQG. The manufacturer's warranty is 30K.
What does 92V mean on the Michelin Primacy MXM4?
92V breaks down as load index 92 — rated for 1,389 lbs per tire — with a V speed rating, good for a maximum sustained 149 mph.
What kind of tire is the Michelin Primacy MXM4?
The Michelin Primacy MXM4 in 225/40R18 is a all season tire.
Keep shopping
Shop all 225/40R18 tires, browse Michelin tires, see every Michelin Primacy MXM4 size, or view all tires at ThreePiece.us.
- BRAND:
- Michelin
- Model:
- Primacy MXM4
- Size:
- 225/40R18XL
- Aspect Ratio:
- 40
- Load Index:
- 92
- Load Range:
- Extra Load
- Section Width:
- 225
- Service Description:
- 92V
- Speed Index:
- V
- Temperature:
- A
- Tire Rim Diameter:
- 25.1
- Tire Type:
- All Season
- Traction:
- A
- Tread Wear:
- 500
- Tread Depth:
- 9.5
- UQTG:
- 500AA
- Warranty:
- 30K
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