NT555R
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Specifications
| Size | 335/30ZR18 NT555R |
|---|---|
| Width | 335 mm |
| Aspect ratio | 30 |
| Rim diameter | R18 |
| Load index | 102 |
| Speed rating | Y |
| UTQG | 100 A A |
|---|---|
| Tread depth | 5/32" |
| Weight | 31.44 lbs |
| Max pressure | 44 psi |
| Severe snow (3PMSF) | No |
| Run-flat | No |
About the Nitto NT555R
The NT555R is a DOT Compliant Competition Drag Radial designed with Additional Flexibility for the Weekend Drag Racer. The NT555R Drag Radial works in unison with the NT555 Summer Performance Street tire, so you can put the Drag Radials on the Rear Axle and the NT555s on the Front Axle.
Features
* Overall construction modified to improve launch performance* Semi-radial construction combined with a unique reinforced package* Tread compound formulation
Benefits
* Designed to achieve a balance between maximum dry performance and occasional street use* Helps provide stability at high track speeds* To achieve a balance between treadwear and drag strip performance
Understanding the 335/30ZR18 size
In the size code 335/30R18, 335 is the section width in millimetres (about 13.2"). 30 is the aspect ratio — the sidewall height is 30% of the width, or roughly 100.5 mm. R18 means radial construction on a 18-inch wheel, giving an approximate overall diameter of 25.9".
The load index 102 means each tire supports up to 1,874 lbs — about 7,496 lbs across a full set of four. The speed symbol Y certifies the tire to 186 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 100 A A. The treadwear grade of 100 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 A 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 $265.50 per tire, a full set of four costs $1062.00. That is about 24% below the average price of the 5 tires we stock in this size.
Frequently asked questions
What does the tire size 335/30R18 mean?
335 is the section width in millimetres, 30 is the aspect ratio (sidewall height as a percentage of width, about 100.5 mm), and R18 indicates radial construction for a 18-inch wheel. Overall diameter is approximately 25.9 inches.
What are the load and speed ratings of the Nitto NT555R 335/30ZR18?
Its load index of 102 allows up to 1,874 lbs per tire. Its speed rating of Y is certified to 186 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 NT555R 335/30ZR18 tires cost?
A single tire is $265.50 and a set of four is $1062.00.
Does the NT555R come in other sizes?
Yes — we stock 2 additional NT555R sizes besides 335/30ZR18. Fit only a size approved for your vehicle.