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Michelin
Michelin Primacy 4 ST 245/45R19XL 102V - 47673
Michelin Primacy 4 ST 245/45R19XL 102V - 47673
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Looking for a 245/45R19 summer tire? The Michelin Primacy 4 ST is available now at ThreePiece.us with free shipping on every order and Affirm financing at checkout.
What 245/45R19 means
In the size 245/45R19, 245 is the section width in millimeters (9.65 in), 45 is the aspect ratio — the sidewall stands 45% as tall as the tire is wide, or 110.2 mm (4.34 in) — R denotes radial construction, and 19 is the wheel diameter in inches. That works out to an overall diameter of about 27.68 inches, turning roughly 729 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 102 — a maximum load of 1,874 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 | 245/45R19XL |
| Tire Type | Summer |
| Service Description | 102V |
| Load Index | 102 |
| Speed Rating | V |
| Load Range | Extra Load |
| Section Width (mm) | 245 |
| Aspect Ratio | 45 |
| Overall Diameter (in) | 27.68 |
| Tread Depth (/32") | 8.8 |
| Treadwear | 340 |
| Traction Grade | A |
| Temperature Grade | A |
| UTQG | 340AA |
| Warranty | 35K |
Frequently asked questions
What kind of tire is the Michelin Primacy 4 ST?
The Michelin Primacy 4 ST in 245/45R19 is a summer tire.
What are the treadwear and warranty ratings on the Michelin Primacy 4 ST?
This tire carries a treadwear grade of 340, traction grade A, temperature grade A under UTQG. The manufacturer's warranty is 35K.
What does 102V mean on the Michelin Primacy 4 ST?
102V breaks down as load index 102 — rated for 1,874 lbs per tire — with a V speed rating, good for a maximum sustained 149 mph.
Keep shopping
Shop all 245/45R19 tires, browse Michelin tires, see every Michelin Primacy 4 ST size, or view all tires at ThreePiece.us.
- BRAND:
- Michelin
- Model:
- Primacy 4 ST
- Size:
- 245/45R19XL
- Aspect Ratio:
- 45
- Load Index:
- 102
- Load Range:
- Extra Load
- Section Width:
- 245
- Service Description:
- 102V
- Speed Index:
- V
- Temperature:
- A
- Tire Rim Diameter:
- 27.68
- Tire Type:
- Summer
- Traction:
- A
- Tread Wear:
- 340
- Tread Depth:
- 8.8
- UQTG:
- 340AA
- Warranty:
- 35K
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