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Arroyo
Arroyo Grand Sport AS 235/55ZR20
Arroyo Grand Sport AS 235/55ZR20
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The Arroyo Grand Sport AS in 235/55R20 ships free from ThreePiece.us, with Affirm financing available at checkout and fast delivery from a nationwide warehouse network.
What 235/55R20 means
In the size 235/55R20, 235 is the section width in millimeters (9.25 in), 55 is the aspect ratio — the sidewall stands 55% as tall as the tire is wide, or 129.2 mm (5.09 in) — R denotes radial construction, and 20 is the wheel diameter in inches. That works out to an overall diameter of about 30.18 inches, turning roughly 668 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 102 — a maximum load of 1,874 lbs per tire. The speed symbol W corresponds to a maximum sustained speed of 168 mph.
Specifications
| Size | 235/55ZR20 |
| Tire Type | Passenger |
| Service Description | 102W |
| Load Index | 102 |
| Speed Rating | W |
| Load Range | XL |
| Section Width (mm) | 235 |
| Aspect Ratio | 55 |
| Overall Diameter (in) | 20 |
| Treadwear | 500 |
| Traction Grade | A |
| Temperature Grade | A |
| UTQG | 500 A A |
Frequently asked questions
What does 102W mean on the Arroyo Grand Sport AS?
102W breaks down as load index 102 — rated for 1,874 lbs per tire — with a W speed rating, good for a maximum sustained 168 mph.
What kind of tire is the Arroyo Grand Sport AS?
The Arroyo Grand Sport AS in 235/55R20 is a passenger tire.
What are the treadwear and warranty ratings on the Arroyo Grand Sport AS?
This tire carries a treadwear grade of 500, traction grade A, temperature grade A under UTQG.
Keep shopping
Shop all 235/55R20 tires, see every Arroyo Grand Sport AS size, or view all tires at ThreePiece.us.
- BRAND:
- Arroyo
- Model:
- Grand Sport AS
- Size:
- 235/55ZR20
- Aspect Ratio:
- 55
- Load Index:
- 102
- Load Range:
- XL
- Section Width:
- 235
- Service Description:
- 102W
- Speed Index:
- W
- Temperature:
- A
- Tire Rim Diameter:
- 20
- Tire Type:
- Passenger
- Traction:
- A
- Tread Wear:
- 500
- Max Load (LB):
- 1874
- UQTG:
- 500 A A
- Side Wall:
- BSW
- Warranty:
- N/A
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