NT555 G2
🚚 Standard shipping across the country — delivered with DHL in 2-6 business days. 🔒 SSL-secured checkout.
↩️ Free returns within 30 days — unmounted tires, prepaid label, no return shipping cost.
Specifications
| Size | 315/30ZR20 XL NT555 G2 |
|---|---|
| Width | 315 mm |
| Aspect ratio | 30 |
| Rim diameter | R20 |
| Load index | 104 |
| Speed rating | W |
| Load range | XL |
| UTQG | 320 AA A |
|---|---|
| Tread depth | 10.2/32" |
| Weight | 35.49 lbs |
| Max pressure | 50 psi |
| Severe snow (3PMSF) | No |
| Run-flat | No |
About the Nitto NT555 G2
Summer Ultra High Performance Passenger Car tire.
Features
* Larger tread blocks for 275mm section width and greater* Twin center ribs* Large tapered block* 4-circumferential grooves* Reinforced shoulder tread blocks* High stiffness and high silica compound* Nitto Passenger and Light Truck Tire Limited Warranty
Benefits
* Enhanced traction for rear tires of vehicles with staggered fitments and high horsepower* Tire sizes with 275mm and greater section width have larger tread blocks in comparison to tires with 265mm and narrower section width* For increased dry traction and straight-line stability* Increased grip capabilities and better cornering stability* Center grooves and shoulder grooves aid water evacuation and wet handling* Improves dry and wet cornering grip* For higher compound rigidity during cornering, resulting in better handling capabilities in both wet and dry
Understanding the 315/30ZR20 XL size
In the size code 315/30R20, 315 is the section width in millimetres (about 12.4"). 30 is the aspect ratio — the sidewall height is 30% of the width, or roughly 94.5 mm. R20 means radial construction on a 20-inch wheel, giving an approximate overall diameter of 27.4".
The load index 104 means each tire supports up to 1,984 lbs — about 7,936 lbs across a full set of four. The speed symbol W certifies the tire to 168 mph under its rated load. Always match or exceed the load index and speed rating listed on your vehicle's door-jamb placard.
Tread life and grip ratings
This tire carries a UTQG rating of 320 AA A. The treadwear grade of 320 is a relative durability score — a grade of 200 is expected to last roughly twice as long as a grade of 100 under the same controlled test. Traction grade AA measures straight-line wet stopping grip (AA is highest, then A, B and C). Temperature grade A reflects heat resistance at sustained speed (A is highest).
Price and value
At $304.50 per tire, a full set of four costs $1218.00. That is about 38% below the average price of the 12 tires we stock in this size.
Frequently asked questions
What does the tire size 315/30R20 mean?
315 is the section width in millimetres, 30 is the aspect ratio (sidewall height as a percentage of width, about 94.5 mm), and R20 indicates radial construction for a 20-inch wheel. Overall diameter is approximately 27.4 inches.
What are the load and speed ratings of the Nitto NT555 G2 315/30ZR20 XL?
Its load index of 104 allows up to 1,984 lbs per tire. Its speed rating of W is certified to 168 mph. Check your door-jamb placard and do not fit a tire rated below the vehicle's requirement.
How much does a set of 4 Nitto NT555 G2 315/30ZR20 XL tires cost?
A single tire is $304.50 and a set of four is $1218.00.
Does the NT555 G2 come in other sizes?
Yes — we stock 64 additional NT555 G2 sizes besides 315/30ZR20 XL. Fit only a size approved for your vehicle.