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Mastercraft
Mastercraft Courser Trail HD 275/65R18/10 123S - 175098010
Mastercraft Courser Trail HD 275/65R18/10 123S - 175098010
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Shop the Mastercraft Courser Trail HD 275/65R18 at ThreePiece.us — free shipping on every order, Affirm financing available, and fast delivery nationwide.
What 275/65R18 means
In the size 275/65R18, 275 is the section width in millimeters (10.83 in), 65 is the aspect ratio — the sidewall stands 65% as tall as the tire is wide, or 178.8 mm (7.04 in) — R denotes radial construction, and 18 is the wheel diameter in inches. That works out to an overall diameter of about 32.07 inches, turning roughly 629 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 123 — a maximum load of 3,417 lbs per tire. The speed symbol S corresponds to a maximum sustained speed of 112 mph.
Load Range E corresponds to a 10-ply rating.
Specifications
| Size | 275/65R18/10 |
| Tire Type | All Season |
| Service Description | 123S |
| Load Index | 123 |
| Speed Rating | S |
| Load Range | E |
| Section Width (mm) | 275 |
| Aspect Ratio | 65 |
| Overall Diameter (in) | 32.09 |
| Tread Depth (/32") | 16 |
| Warranty | 55K |
Frequently asked questions
What warranty does the Mastercraft Courser Trail HD carry?
The manufacturer's warranty on this tire is 55K.
What does 123S mean on the Mastercraft Courser Trail HD?
123S breaks down as load index 123 — rated for 3,417 lbs per tire — with an S speed rating, good for a maximum sustained 112 mph.
What kind of tire is the Mastercraft Courser Trail HD?
The Mastercraft Courser Trail HD in 275/65R18 is a all season tire.
Keep shopping
Shop all 275/65R18 tires, browse Mastercraft tires, see every Mastercraft Courser Trail HD size, or view all tires at ThreePiece.us.
- BRAND:
- Mastercraft
- Model:
- Courser Trail HD
- Size:
- 275/65R18/10
- Aspect Ratio:
- 65
- Load Index:
- 123
- Load Range:
- E
- Section Width:
- 275
- Service Description:
- 123S
- Speed Index:
- S
- Tire Rim Diameter:
- 32.09
- Tire Type:
- All Season
- Tread Depth:
- 16
- Warranty:
- 55K
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