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Prinx
Prinx HICOUNTRY HM1 331/50R18/10
Prinx HICOUNTRY HM1 331/50R18/10
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Looking for a 331/50R18 tire? The Prinx HICOUNTRY HM1 is available now at ThreePiece.us with free shipping on every order and Affirm financing at checkout.
What 331/50R18 means
In the size 331/50R18, 331 is the section width in millimeters (13.03 in), 50 is the aspect ratio — the sidewall stands 50% as tall as the tire is wide, or 165.5 mm (6.52 in) — R denotes radial construction, and 18 is the wheel diameter in inches. That works out to an overall diameter of about 31.03 inches, turning roughly 650 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 118 — a maximum load of 2,910 lbs per tire. The speed symbol Q corresponds to a maximum sustained speed of 99 mph.
Load Range E corresponds to a 10-ply rating.
Specifications
| Size | 331/50R18/10 |
| Service Description | 118Q |
| Load Index | 118 |
| Speed Rating | Q |
| Load Range | E |
| Section Width (mm) | 331 |
| Aspect Ratio | 50 |
| Temperature Grade | TIRE RIM DIAMETER=18TIRE TYPE=TRACTION=TREAD WEAR=TREAD DEPTH=UQTG=WARRANTY= |
Frequently asked questions
Will 331/50R18 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 331/50R18, this tire matches your vehicle's fitment. If you're changing sizes, compare overall diameter to keep your speedometer and clearances right.
How fast does this tire ship?
Every order at ThreePiece.us ships free, with fast delivery from a nationwide warehouse network. Affirm financing is available at checkout.
What does 118Q mean on the Prinx HICOUNTRY HM1?
118Q breaks down as load index 118 — rated for 2,910 lbs per tire — with a Q speed rating, good for a maximum sustained 99 mph.
Keep shopping
Browse Prinx tires, see every Prinx HICOUNTRY HM1 size, or view all tires at ThreePiece.us.
- BRAND:
- Prinx
- MODEL:
- HICOUNTRY HM1
- SIZE:
- 331/50R18/10
- ASPECT RATIO:
- 50
- LOAD INDEX:
- 118
- LOAD RANGE:
- E
- SECTION WIDTH:
- 331
- SERVICE DESCRIPTION:
- 118Q
- SPEED INDEX:
- Q
- TEMPERATURE:
- TIRE RIM DIAMETER=18TIRE TYPE=TRACTION=TREAD WEAR=TREAD DEPTH=UQTG=WARRANTY=
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