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Toyo
Toyo Proxes ST III 275/50R21XL 113V - 247640
Toyo Proxes ST III 275/50R21XL 113V - 247640
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Looking for a 275/50R21 all season tire? The Toyo Proxes ST III is available now at ThreePiece.us with free shipping on every order and Affirm financing at checkout.
What 275/50R21 means
In the size 275/50R21, 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 21 is the wheel diameter in inches. That works out to an overall diameter of about 31.83 inches, turning roughly 634 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 113 — a maximum load of 2,535 lbs per tire. The speed symbol V corresponds to a maximum sustained speed of 149 mph.
Load Range E corresponds to a 10-ply rating.
Specifications
| Size | 275/50R21XL |
| Tire Type | All Season |
| Service Description | 113V |
| Load Index | 113 |
| Speed Rating | V |
| Load Range | Extra Load |
| Section Width (mm) | 275 |
| Aspect Ratio | 50 |
| Overall Diameter (in) | 31.9 |
| 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 275/50R21 is a all season 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 113V mean on the Toyo Proxes ST III?
113V breaks down as load index 113 — rated for 2,535 lbs per tire — with a V speed rating, good for a maximum sustained 149 mph.
Keep shopping
Browse Toyo tires, see every Toyo Proxes ST III size, or view all tires at ThreePiece.us.
- BRAND:
- Toyo
- Model:
- Proxes ST III
- Size:
- 275/50R21XL
- Aspect Ratio:
- 50
- Load Index:
- 113
- Load Range:
- Extra Load
- Section Width:
- 275
- Service Description:
- 113V
- Speed Index:
- V
- Temperature:
- A
- Tire Rim Diameter:
- 31.9
- Tire Type:
- All Season
- Traction:
- A
- Tread Wear:
- 500
- Tread Depth:
- 10.1
- UQTG:
- 500AA
- Warranty:
- 40K
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