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Michelin
Michelin Primacy MXM4 255/45R19 100V - 78442
Michelin Primacy MXM4 255/45R19 100V - 78442
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Looking for a 255/45R19 all season tire? The Michelin Primacy MXM4 is available now at ThreePiece.us with free shipping on every order and Affirm financing at checkout.
What 255/45R19 means
In the size 255/45R19, 255 is the section width in millimeters (10.04 in), 45 is the aspect ratio — the sidewall stands 45% as tall as the tire is wide, or 114.8 mm (4.52 in) — R denotes radial construction, and 19 is the wheel diameter in inches. That works out to an overall diameter of about 28.04 inches, turning roughly 719 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 100 — a maximum load of 1,764 lbs per tire. The speed symbol V corresponds to a maximum sustained speed of 149 mph.
Specifications
| Size | 255/45R19 |
| Tire Type | All Season |
| Service Description | 100V |
| Load Index | 100 |
| Speed Rating | V |
| Load Range | Standard Load |
| Section Width (mm) | 255 |
| Aspect Ratio | 45 |
| Overall Diameter (in) | 28.1 |
| Tread Depth (/32") | 10 |
| Treadwear | 500 |
| Traction Grade | A |
| Temperature Grade | A |
| UTQG | 500AA |
| Warranty | 55K |
Frequently asked questions
What kind of tire is the Michelin Primacy MXM4?
The Michelin Primacy MXM4 in 255/45R19 is a all season tire.
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 55K.
What does 100V mean on the Michelin Primacy MXM4?
100V breaks down as load index 100 — rated for 1,764 lbs per tire — with a V speed rating, good for a maximum sustained 149 mph.
Keep shopping
Shop all 255/45R19 tires, browse Michelin tires, see every Michelin Primacy MXM4 size, or view all tires at ThreePiece.us.
- BRAND:
- Michelin
- Model:
- Primacy MXM4
- Size:
- 255/45R19
- Aspect Ratio:
- 45
- Load Index:
- 100
- Load Range:
- Standard Load
- Section Width:
- 255
- Service Description:
- 100V
- Speed Index:
- V
- Temperature:
- A
- Tire Rim Diameter:
- 28.1
- Tire Type:
- All Season
- Traction:
- A
- Tread Wear:
- 500
- Tread Depth:
- 10
- UQTG:
- 500AA
- Warranty:
- 55K
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