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Toyo
Toyo TOY Proxes ST III 275/50R20XL
Toyo TOY Proxes ST III 275/50R20XL
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Looking for a 275/50R20 highway tire? The Toyo Proxes ST III is available now at ThreePiece.us with free shipping on every order and Affirm financing at checkout.
What 275/50R20 means
In the size 275/50R20, 275 is the section width in millimeters (10.83 in), 50 is the aspect ratio — the sidewall stands 50% as tall as the tire is wide, or 137.5 mm (5.41 in) — R denotes radial construction, and 20 is the wheel diameter in inches. That works out to an overall diameter of about 30.83 inches, turning roughly 654 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 20 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 113 — a maximum load of 2,535 lbs per tire. The speed symbol W corresponds to a maximum sustained speed of 168 mph.
Specifications
| Size | 275/50R20xL |
| Tire Type | Highway |
| Service Description | 113W |
| Load Index | 113 |
| Speed Rating | W |
| Load Range | XL |
| Section Width (mm) | 275 |
| Aspect Ratio | 50 |
| Overall Diameter (in) | 20 |
| Tread Depth (/32") | 10.1 |
| Treadwear | 500 |
| Traction Grade | A |
| Temperature Grade | A |
| UTQG | 500AA |
| Warranty | 40K |
Frequently asked questions
What kind of tire is the Toyo Proxes ST III?
The Toyo Proxes ST III in 275/50R20 is a highway tire.
What are the treadwear and warranty ratings on the Toyo Proxes ST III?
This tire carries a treadwear grade of 500, traction grade A, temperature grade A under UTQG. The manufacturer's warranty is 40K.
What does 113W mean on the Toyo Proxes ST III?
113W breaks down as load index 113 — rated for 2,535 lbs per tire — with a W speed rating, good for a maximum sustained 168 mph.
Keep shopping
Shop all 275/50R20 tires, see every Toyo Proxes ST III size, or view all tires at ThreePiece.us.
- BRAND:
- Toyo
- Model:
- TOY Proxes ST III
- Size:
- 275/50R20xL
- Aspect Ratio:
- 50
- Load Index:
- 113
- Load Range:
- XL
- Section Width:
- 275
- Service Description:
- 113W
- Speed Index:
- W
- Temperature:
- A
- Tire Rim Diameter:
- 20
- Tire Type:
- Highway
- Traction:
- A
- Tread Wear:
- 500
- Tread Depth:
- 10.1
- UQTG:
- 500AA
- Warranty:
- 40K
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