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Toyo
Toyo Proxes R1R 225/45ZR15 87W - 173280
Toyo Proxes R1R 225/45ZR15 87W - 173280
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Looking for a 225/45R15 summer tire? The Toyo Proxes R1R is available now at ThreePiece.us with free shipping on every order and Affirm financing at checkout.
What 225/45R15 means
In the size 225/45R15, 225 is the section width in millimeters (8.86 in), 45 is the aspect ratio — the sidewall stands 45% as tall as the tire is wide, or 101.2 mm (3.99 in) — R denotes radial construction, and 15 is the wheel diameter in inches. That works out to an overall diameter of about 22.97 inches, turning roughly 878 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 87 — a maximum load of 1,202 lbs per tire. The speed symbol W corresponds to a maximum sustained speed of 168 mph.
Specifications
| Size | 225/45ZR15 |
| Tire Type | Summer |
| Service Description | 87W |
| Load Index | 87 |
| Speed Rating | W |
| Load Range | Standard Load |
| Section Width (mm) | 225 |
| Aspect Ratio | 45 |
| Overall Diameter (in) | 22.95 |
| Tread Depth (/32") | 8.1 |
| Treadwear | 200 |
| Traction Grade | AA |
| Temperature Grade | A |
| UTQG | 200AAA |
Frequently asked questions
What kind of tire is the Toyo Proxes R1R?
The Toyo Proxes R1R in 225/45R15 is a summer tire.
What are the treadwear and warranty ratings on the Toyo Proxes R1R?
This tire carries a treadwear grade of 200, traction grade AA, temperature grade A under UTQG.
What does 87W mean on the Toyo Proxes R1R?
87W breaks down as load index 87 — rated for 1,202 lbs per tire — with a W speed rating, good for a maximum sustained 168 mph.
Keep shopping
Browse Toyo tires, see every Toyo Proxes R1R size, or view all tires at ThreePiece.us.
- BRAND:
- Toyo
- Model:
- Proxes R1R
- Size:
- 225/45ZR15
- Aspect Ratio:
- 45
- Load Index:
- 87
- Load Range:
- Standard Load
- Section Width:
- 225
- Service Description:
- 87W
- Speed Index:
- W
- Temperature:
- A
- Tire Rim Diameter:
- 22.95
- Tire Type:
- Summer
- Traction:
- AA
- Tread Wear:
- 200
- Tread Depth:
- 8.1
- UQTG:
- 200AAA
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