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American Roadstar
American Roadstar Sport AS 185/55R15
American Roadstar Sport AS 185/55R15
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Shop the American Roadstar Sport AS 185/55R15 at ThreePiece.us — free shipping on every order, Affirm financing available, and fast delivery nationwide.
What 185/55R15 means
In the size 185/55R15, 185 is the section width in millimeters (7.28 in), 55 is the aspect ratio — the sidewall stands 55% as tall as the tire is wide, or 101.8 mm (4.01 in) — R denotes radial construction, and 15 is the wheel diameter in inches. That works out to an overall diameter of about 23.01 inches, turning roughly 876 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 manufacturer lists the overall diameter of this specific tire as 15 inches — when clearance is tight, go by the published figure rather than the nominal size math.
The service description on this tire decodes to a load index of 82 — a maximum load of 1,047 lbs per tire. The speed symbol V corresponds to a maximum sustained speed of 149 mph.
Specifications
| Size | 185/55R15 |
| Service Description | 82V |
| Load Index | 82 |
| Speed Rating | V |
| Section Width (mm) | 185 |
| Aspect Ratio | 55 |
| Overall Diameter (in) | 15 |
| Treadwear | 500 |
| Traction Grade | A |
| Temperature Grade | A |
| UTQG | 500 A A |
Frequently asked questions
Will 185/55R15 tires fit my vehicle?
Check the size molded into your current tire's sidewall or the tire placard inside the driver's door jamb — if it reads 185/55R15, this tire matches your vehicle's fitment. If you're changing sizes, compare overall diameter to keep your speedometer and clearances right.
What does 82V mean on the American Roadstar Sport AS?
82V breaks down as load index 82 — rated for 1,047 lbs per tire — with a V speed rating, good for a maximum sustained 149 mph.
What are the treadwear and warranty ratings on the American Roadstar Sport AS?
This tire carries a treadwear grade of 500, traction grade A, temperature grade A under UTQG.
Keep shopping
See every American Roadstar Sport AS size, or view all tires at ThreePiece.us.
- BRAND:
- American Roadstar
- Model:
- Sport AS
- Size:
- 185/55R15
- Aspect Ratio:
- 55
- Load Index:
- 82
- Load Range:
- N/A
- Section Width:
- 185
- Service Description:
- 82V
- Speed Index:
- V
- Temperature:
- A
- Tire Rim Diameter:
- 15
- Tire Type:
- N/A
- Traction:
- A
- Tread Wear:
- 500
- Max Load (LB):
- 1047.18
- UQTG:
- 500 A A
- Side Wall:
- N/A
- Warranty:
- N/A
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