Hercules
Hercules Strong Guard SS4 Tires
Free Road Hazard
The Hercules Strong Guard SS4 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 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 SS4 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 SS4 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 SS4 |
| Size | 31x15.50-15 |
| Load Index | 121 |
| Load Range / Ply | e |
| Max Load | 3200 lbs |
| Run-Flat | No |
| Sidewall | Black Sidewall |
| Country of Origin | CHINA |
| Manufacturer Part Number | 98919 |
| UPC / GTIN | 688028989196 |
| 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.
No customer reviews yet for this tire. Be the first — your review helps the next driver pick with confidence.
Bought these? Call us at (678) 400-6467Hercules Strong Guard SS4 — Frequently Asked Questions
What sizes of the Hercules Strong Guard SS4 does Road Runner carry?
We stock the Hercules Strong Guard SS4 in 15" in load range E for heavier trucks — so most truck or SUVs can be fitted or shipped fast. Don't see your size listed? Call 678-400-6467 and we'll source it.
Can Road Runner install my Hercules Strong Guard SS4 the same day?
In most cases, yes. We mount, balance, and install in our shop, often same-day. Out-of-state? We ship your Hercules Strong Guard SS4 straight to your door.
Will the Hercules Strong Guard SS4 fit my truck or SUV?
Enter your year, make, and model in our fitment tool, or call 678-400-6467. We confirm the exact Hercules Strong Guard SS4 size and load rating for your truck or SUV before you buy, so it fits right the first time.
Is the Hercules Strong Guard SS4 good for both highway and off-road?
Yes — the Hercules Strong Guard SS4 is an all-terrain designed to balance smooth, quiet highway miles with real traction on dirt, gravel, and light off-road. It's a great all-around choice for trucks and SUVs that see a mix of pavement and trail.
Build your package
Add matching wheels
Picked your tires — now pick the wheels they bolt to. Browse by size or use our vehicle finder to match what fits.
How it works
- 1Pick your size, load & speed above
- 2Add 4 to cart or reserve in-store
- 3Schedule mount & balance at pickup
Acima
Lease-to-own — no credit needed
You can apply now, or pick this option at checkout — your choice.
Final approval and terms are determined by the lender.
Shopping tires near you in the Atlanta metro? Every tire we sell mounts + balances same day at our Marietta tire shop — 1585 Roswell Rd. Serving Marietta, Atlanta, Cobb County, Kennesaw, Smyrna, Sandy Springs, Roswell, Alpharetta, Buckhead + Vinings.
Sign in to your garage
Save your vehicles, favorite wheels and orders across all your devices.
Where are we shipping to?
Enter your ZIP code to see accurate delivery times, local install scheduling, and local warehouse inventory.
Please enter a 5-digit ZIP code.