Hercules
Hercules Strong Guard R1 Tires
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The Hercules Strong Guard R1 31X15.5R15 is a tire. Built for trucks that require the listed tire size, with a 121 load index where applicable.
Key Features
- Size: 31X15.5R15
- Load Index: 121
- Ply Rating: e
- Country of Origin: CHINA
Installing at Road Runner Wheels & Tires
Road Runner Wheels & Tires in Marietta GA can mount and balance your tires, service TPMS sensors when needed, and help confirm the correct tire size for your vehicle.
Send your year, make, and model before ordering so we can confirm this tire size is correct for your vehicle. Call (678) 400-6467 or (678) 400-6467.
Drivers who care about how a vehicle feels on the road need a tire that turns in cleanly, holds the line, and stops short. The Hercules Strong Guard R1 in 31x15.50-15 is a performance option built for confident, real-world performance.
With a load index of 121 and load range e, it supports the payload demands of full-size trucks and SUVs while maintaining a —-speed rating for everyday highway use.
All-season compound adapts to dry pavement and light wet conditions for predictable handling year-round. Commonly chosen by owners running daily driving and spirited weekend runs, the Strong Guard R1 bridges the gap between capability and comfort.
Load range e and a maximum load capacity of 3200 lbs lbs make it suitable for full-size trucks and SUVs carrying gear, equipment, or cargo without frequent pressure adjustments.
| Manufacturer | Hercules |
|---|---|
| Tire Line | Strong Guard R1 |
| Size | 31x15.50-15 |
| Section Width (mm) | 31X15.5R15 |
| Load Index | 121 |
| Load Range / Ply | e |
| Max Load | 3200 lbs |
| Run-Flat | No |
| Sidewall | Black Sidewall |
| Country of Origin | CHINA |
| Manufacturer Part Number | 98910 |
| UPC / GTIN | 688028989103 |
| Free Shipping | Yes — Continental US |
Wet Traction85/100
Dry Handling88/100
Tread Life86/100
Ride Comfort86/100
Scoring blended from manufacturer specs and tread design. Real-world results vary by vehicle, alignment, load, and conditions.
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