Write a Review
Nitto
Nitto NIT Ridge Grappler 305/60R18
Nitto NIT Ridge Grappler 305/60R18
📧 Get Fitment Help
Verify parts fit & get product recommendations
Lease-to-own for as low as
/week
Get Started
Guaranteed to Fit — confirm your size with the fitment checker on this page
Price Match Guarantee Learn More
Free Mount & Balance
Free Shipping
IN STOCK (63 wheels)
📧 Get Fitment Help
Verify parts fit & get product recommendations
The Nitto Ridge Grappler in 305/60R18 ships free from ThreePiece.us, with Affirm financing available at checkout and fast delivery from a nationwide warehouse network.
What 305/60R18 means
In the size 305/60R18, 305 is the section width in millimeters (12.01 in), 60 is the aspect ratio — the sidewall stands 60% as tall as the tire is wide, or 183.0 mm (7.20 in) — R denotes radial construction, and 18 is the wheel diameter in inches. That works out to an overall diameter of about 32.41 inches, turning roughly 622 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 116 — a maximum load of 2,756 lbs per tire. The speed symbol Q corresponds to a maximum sustained speed of 99 mph.
Specifications
| Size | 305/60R18 |
| Tire Type | All Season |
| Service Description | 116Q |
| Load Index | 116 |
| Speed Rating | Q |
| Load Range | Standard Load |
| Section Width (mm) | 305 |
| Aspect Ratio | 60 |
| Overall Diameter (in) | 32.4 |
| Tread Depth (/32") | 13.5 |
| Treadwear | 500 |
| Traction Grade | A |
| Temperature Grade | B |
| UTQG | 500AB |
Frequently asked questions
What does 116Q mean on the Nitto Ridge Grappler?
116Q breaks down as load index 116 — rated for 2,756 lbs per tire — with a Q speed rating, good for a maximum sustained 99 mph.
What kind of tire is the Nitto Ridge Grappler?
The Nitto Ridge Grappler in 305/60R18 is a all season tire.
What are the treadwear and warranty ratings on the Nitto Ridge Grappler?
This tire carries a treadwear grade of 500, traction grade A, temperature grade B under UTQG.
Keep shopping
See every Nitto Ridge Grappler size, or view all tires at ThreePiece.us.
- BRAND:
- Nitto
- Model:
- Ridge Grappler
- Size:
- 305/60R18
- Aspect Ratio:
- 60
- Load Index:
- 116
- Load Range:
- Standard Load
- Section Width:
- 305
- Service Description:
- 116Q
- Speed Index:
- Q
- Temperature:
- B
- Tire Rim Diameter:
- 32.4
- Tire Type:
- All Season
- Traction:
- A
- Tread Wear:
- 500
- Tread Depth:
- 13.5
- UQTG:
- 500AB
PRODUCT REVIEWS (0)
Overall Rankings
Have you tried this product?
WRITE A REVIEWNo reviews for this product yet. Be the first to write a review!
Write a Review