Write a Review
Michelin
Michelin Pilot Alpin PA4 245/50R18 100H - 55822
Michelin Pilot Alpin PA4 245/50R18 100H - 55822
📧 Get Fitment Help
Verify parts fit & get product recommendations
Lease-to-own for as low as
/week
Get Started
Guaranteed to Fit — confirm your size with the fitment checker on this page
Price Match Guarantee Learn More
Free Mount & Balance
Free Shipping
IN STOCK (14 wheels)
📧 Get Fitment Help
Verify parts fit & get product recommendations
Shop the Michelin Pilot Alpin PA4 245/50R18 at ThreePiece.us — free shipping on every order, Affirm financing available, and fast delivery nationwide.
What 245/50R18 means
In the size 245/50R18, 245 is the section width in millimeters (9.65 in), 50 is the aspect ratio — the sidewall stands 50% as tall as the tire is wide, or 122.5 mm (4.82 in) — R denotes radial construction, and 18 is the wheel diameter in inches. That works out to an overall diameter of about 27.65 inches, turning roughly 730 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 H corresponds to a maximum sustained speed of 130 mph.
Specifications
| Size | 245/50R18 |
| Tire Type | Winter |
| Service Description | 100H |
| Load Index | 100 |
| Speed Rating | H |
| Load Range | Standard Load |
| Section Width (mm) | 245 |
| Aspect Ratio | 50 |
| Overall Diameter (in) | 27.68 |
| Tread Depth (/32") | 10.5 |
| Warranty | 30K |
Frequently asked questions
What warranty does the Michelin Pilot Alpin PA4 carry?
The manufacturer's warranty on this tire is 30K.
What does 100H mean on the Michelin Pilot Alpin PA4?
100H breaks down as load index 100 — rated for 1,764 lbs per tire — with an H speed rating, good for a maximum sustained 130 mph.
What kind of tire is the Michelin Pilot Alpin PA4?
The Michelin Pilot Alpin PA4 in 245/50R18 is a winter tire.
Keep shopping
Shop all 245/50R18 tires, browse Michelin tires, see every Michelin Pilot Alpin PA4 size, explore winter snow tires, or view all tires at ThreePiece.us.
- BRAND:
- Michelin
- Model:
- Pilot Alpin PA4
- Size:
- 245/50R18
- Aspect Ratio:
- 50
- Load Index:
- 100
- Load Range:
- Standard Load
- Section Width:
- 245
- Service Description:
- 100H
- Speed Index:
- H
- Tire Rim Diameter:
- 27.68
- Tire Type:
- Winter
- Tread Depth:
- 10.5
- Warranty:
- 30K
PRODUCT REVIEWS (0)
Overall Rankings
Have you tried this product?
WRITE A REVIEWNo reviews for this product yet. Be the first to write a review!
Write a Review