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Winrun
Winrun R330 275/45ZR18
Winrun R330 275/45ZR18
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Shop the Winrun R330 275/45R18 at ThreePiece.us — free shipping on every order, Affirm financing available, and fast delivery nationwide.
What 275/45R18 means
In the size 275/45R18, 275 is the section width in millimeters (10.83 in), 45 is the aspect ratio — the sidewall stands 45% 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 service description on this tire decodes to a load index of 107 — a maximum load of 2,150 lbs per tire. The speed symbol W corresponds to a maximum sustained speed of 168 mph.
Specifications
| Size | 275/45ZR18 |
| Service Description | 107W |
| Load Index | 107 |
| Speed Rating | W |
| Load Range | XL |
| Section Width (mm) | 275 |
| Aspect Ratio | 45Z |
| Temperature Grade | ATIRE RIM DIAMETER=18TIRE TYPE=High PerformanceTRACTION=ATREAD WEAR=420TREAD DEPTH=UQTG=420 A AWARRANTY= |
Frequently asked questions
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 107W mean on the Winrun R330?
107W breaks down as load index 107 — rated for 2,150 lbs per tire — with a W speed rating, good for a maximum sustained 168 mph.
Will 275/45R18 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 275/45R18, this tire matches your vehicle's fitment. If you're changing sizes, compare overall diameter to keep your speedometer and clearances right.
Keep shopping
Browse Winrun tires, see every Winrun R330 size, or view all tires at ThreePiece.us.
- BRAND:
- Winrun
- MODEL:
- R330
- SIZE:
- 275/45ZR18
- ASPECT RATIO:
- 45Z
- LOAD INDEX:
- 107
- LOAD RANGE:
- XL
- SECTION WIDTH:
- 275
- SERVICE DESCRIPTION:
- 107W
- SPEED INDEX:
- W
- TEMPERATURE:
- ATIRE RIM DIAMETER=18TIRE TYPE=High PerformanceTRACTION=ATREAD WEAR=420TREAD DEPTH=UQTG=420 A AWARRANTY=
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