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Michelin
Michelin Primacy MXM4 245/40R17 91W - 26027
Michelin Primacy MXM4 245/40R17 91W - 26027
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Shop the Michelin Primacy MXM4 245/40R17 at ThreePiece.us — free shipping on every order, Affirm financing available, and fast delivery nationwide.
What 245/40R17 means
In the size 245/40R17, 245 is the section width in millimeters (9.65 in), 40 is the aspect ratio — the sidewall stands 40% as tall as the tire is wide, or 98.0 mm (3.86 in) — R denotes radial construction, and 17 is the wheel diameter in inches. That works out to an overall diameter of about 24.72 inches, turning roughly 816 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 91 — a maximum load of 1,356 lbs per tire. The speed symbol W corresponds to a maximum sustained speed of 168 mph.
Specifications
| Size | 245/40R17 |
| Tire Type | All Season |
| Service Description | 91W |
| Load Index | 91 |
| Speed Rating | W |
| Load Range | Standard Load |
| Section Width (mm) | 245 |
| Aspect Ratio | 40 |
| Overall Diameter (in) | 24.7 |
| Tread Depth (/32") | 10 |
| Treadwear | 500 |
| Traction Grade | AA |
| Temperature Grade | A |
| UTQG | 500AAA |
| Warranty | 45K |
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 AA, temperature grade A under UTQG. The manufacturer's warranty is 45K.
What does 91W mean on the Michelin Primacy MXM4?
91W breaks down as load index 91 — rated for 1,356 lbs per tire — with a W speed rating, good for a maximum sustained 168 mph.
What kind of tire is the Michelin Primacy MXM4?
The Michelin Primacy MXM4 in 245/40R17 is a all season tire.
Keep shopping
Shop all 245/40R17 tires, browse Michelin tires, see every Michelin Primacy MXM4 size, or view all tires at ThreePiece.us.
- BRAND:
- Michelin
- Model:
- Primacy MXM4
- Size:
- 245/40R17
- Aspect Ratio:
- 40
- Load Index:
- 91
- Load Range:
- Standard Load
- Section Width:
- 245
- Service Description:
- 91W
- Speed Index:
- W
- Temperature:
- A
- Tire Rim Diameter:
- 24.7
- Tire Type:
- All Season
- Traction:
- AA
- Tread Wear:
- 500
- Tread Depth:
- 10
- UQTG:
- 500AAA
- Warranty:
- 45K
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