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Mastercraft
Mastercraft MSC Stratus AS 225/55R18
Mastercraft MSC Stratus AS 225/55R18
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Shop the Mastercraft Stratus AS 225/55R18 at ThreePiece.us — free shipping on every order, Affirm financing available, and fast delivery nationwide.
What 225/55R18 means
In the size 225/55R18, 225 is the section width in millimeters (8.86 in), 55 is the aspect ratio — the sidewall stands 55% as tall as the tire is wide, or 123.8 mm (4.87 in) — R denotes radial construction, and 18 is the wheel diameter in inches. That works out to an overall diameter of about 27.74 inches, turning roughly 727 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 18 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 98 — a maximum load of 1,653 lbs per tire. The speed symbol T corresponds to a maximum sustained speed of 118 mph.
Specifications
| Size | 225/55R18 |
| Tire Type | Performance |
| Service Description | 98T |
| Load Index | 98 |
| Speed Rating | T |
| Load Range | SL |
| Section Width (mm) | 225 |
| Aspect Ratio | 55 |
| Overall Diameter (in) | 18 |
| Tread Depth (/32") | 9 |
| Treadwear | 520 |
| Traction Grade | A |
| Temperature Grade | A |
| UTQG | 520AA |
| Warranty | 50K |
Frequently asked questions
What are the treadwear and warranty ratings on the Mastercraft Stratus AS?
This tire carries a treadwear grade of 520, traction grade A, temperature grade A under UTQG. The manufacturer's warranty is 50K.
What does 98T mean on the Mastercraft Stratus AS?
98T breaks down as load index 98 — rated for 1,653 lbs per tire — with a T speed rating, good for a maximum sustained 118 mph.
What kind of tire is the Mastercraft Stratus AS?
The Mastercraft Stratus AS in 225/55R18 is a performance tire.
Keep shopping
Shop all 225/55R18 tires, see every Mastercraft Stratus AS size, or view all tires at ThreePiece.us.
- BRAND:
- Mastercraft
- Model:
- MSC Stratus AS
- Size:
- 225/55R18
- Aspect Ratio:
- 55
- Load Index:
- 98
- Load Range:
- SL
- Section Width:
- 225
- Service Description:
- 98T
- Speed Index:
- T
- Temperature:
- A
- Tire Rim Diameter:
- 18
- Tire Type:
- Performance
- Traction:
- A
- Tread Wear:
- 520
- Tread Depth:
- 9
- UQTG:
- 520AA
- Warranty:
- 50K
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