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Mastercraft
Mastercraft MSC Courser Trail 245/60R18
Mastercraft MSC Courser Trail 245/60R18
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What 245/60R18 means
In the size 245/60R18, 245 is the section width in millimeters (9.65 in), 60 is the aspect ratio — the sidewall stands 60% as tall as the tire is wide, or 147.0 mm (5.79 in) — R denotes radial construction, and 18 is the wheel diameter in inches. That works out to an overall diameter of about 29.57 inches, turning roughly 682 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 105 — a maximum load of 2,039 lbs per tire. The speed symbol H corresponds to a maximum sustained speed of 130 mph.
Specifications
| Size | 245/60R18 |
| Tire Type | All Terrain |
| Service Description | 105H |
| Load Index | 105 |
| Speed Rating | H |
| Load Range | SL |
| Section Width (mm) | 245 |
| Aspect Ratio | 60 |
| Overall Diameter (in) | 18 |
| Tread Depth (/32") | 12 |
| Treadwear | 620 |
| Traction Grade | A |
| Temperature Grade | B |
| UTQG | 620AB |
| Warranty | 60K |
Frequently asked questions
What are the treadwear and warranty ratings on the Mastercraft Courser Trail?
This tire carries a treadwear grade of 620, traction grade A, temperature grade B under UTQG. The manufacturer's warranty is 60K.
What does 105H mean on the Mastercraft Courser Trail?
105H breaks down as load index 105 — rated for 2,039 lbs per tire — with an H speed rating, good for a maximum sustained 130 mph.
What kind of tire is the Mastercraft Courser Trail?
The Mastercraft Courser Trail in 245/60R18 is a all terrain tire.
Keep shopping
Shop all 245/60R18 tires, see every Mastercraft Courser Trail size, explore all terrain tires, or view all tires at ThreePiece.us.
- BRAND:
- Mastercraft
- Model:
- MSC Courser Trail
- Size:
- 245/60R18
- Aspect Ratio:
- 60
- Load Index:
- 105
- Load Range:
- SL
- Section Width:
- 245
- Service Description:
- 105H
- Speed Index:
- H
- Temperature:
- B
- Tire Rim Diameter:
- 18
- Tire Type:
- All Terrain
- Traction:
- A
- Tread Wear:
- 620
- Tread Depth:
- 12
- UQTG:
- 620AB
- Warranty:
- 60K
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