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Hercules
Hercules HER Roadtour 855 SPE 235/55R17
Hercules HER Roadtour 855 SPE 235/55R17
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Looking for a 235/55R17 touring tire? The Hercules Roadtour 855 SPE is available now at ThreePiece.us with free shipping on every order and Affirm financing at checkout.
What 235/55R17 means
In the size 235/55R17, 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 17 is the wheel diameter in inches. That works out to an overall diameter of about 27.18 inches, turning roughly 742 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 99 — a maximum load of 1,709 lbs per tire. The speed symbol H corresponds to a maximum sustained speed of 130 mph.
Specifications
| Size | 235/55R17 |
| Tire Type | Touring |
| Service Description | 99H |
| Load Index | 99 |
| Speed Rating | H |
| Load Range | SL |
| Section Width (mm) | 235 |
| Aspect Ratio | 55 |
| Overall Diameter (in) | 27.17 |
| Tread Depth (/32") | 11 |
| Treadwear | 620 |
| Traction Grade | A |
| Temperature Grade | A |
| UTQG | 620AA |
| Warranty | 70K |
Frequently asked questions
What kind of tire is the Hercules Roadtour 855 SPE?
The Hercules Roadtour 855 SPE in 235/55R17 is a touring tire.
What are the treadwear and warranty ratings on the Hercules Roadtour 855 SPE?
This tire carries a treadwear grade of 620, traction grade A, temperature grade A under UTQG. The manufacturer's warranty is 70K.
What does 99H mean on the Hercules Roadtour 855 SPE?
99H breaks down as load index 99 — rated for 1,709 lbs per tire — with an H speed rating, good for a maximum sustained 130 mph.
Keep shopping
Shop all 235/55R17 tires, see every Hercules Roadtour 855 SPE size, or view all tires at ThreePiece.us.
- BRAND:
- Hercules
- Model:
- HER Roadtour 855 SPE
- Size:
- 235/55R17
- Aspect Ratio:
- 55
- Load Index:
- 99
- Load Range:
- SL
- Section Width:
- 235
- Service Description:
- 99H
- Speed Index:
- H
- Temperature:
- A
- Tire Rim Diameter:
- 27.17
- Tire Type:
- Touring
- Traction:
- A
- Tread Wear:
- 620
- Tread Depth:
- 11
- UQTG:
- 620AA
- Warranty:
- 70K
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