Nitto
NT555 G2
235/40ZR18 XL
$148.50/tire
$198.00
Set of 4: $594.00
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Specifications
| Size | 235/40ZR18 XL NT555 G2 |
|---|---|
| Width | 235 mm |
| Aspect ratio | 40 |
| Rim diameter | R18 |
| Load index | 95 |
| Speed rating | W |
| Load range | XL |
| UTQG | 320 AA A |
|---|---|
| Tread depth | 10.2/32" |
| Weight | 25.57 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 235/40ZR18 XL size
In the size code 235/40R18, 235 is the section width in millimetres (about 9.3"). 40 is the aspect ratio — the sidewall height is 40% of the width, or roughly 94 mm. R18 means radial construction on a 18-inch wheel, giving an approximate overall diameter of 25.4".
The load index 95 means each tire supports up to 1,521 lbs — about 6,084 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 $148.50 per tire, a full set of four costs $594.00. That sits close to the average for the 101 tires we stock in this size.
Frequently asked questions
What does the tire size 235/40R18 mean?
235 is the section width in millimetres, 40 is the aspect ratio (sidewall height as a percentage of width, about 94 mm), and R18 indicates radial construction for a 18-inch wheel. Overall diameter is approximately 25.4 inches.
What are the load and speed ratings of the Nitto NT555 G2 235/40ZR18 XL?
Its load index of 95 allows up to 1,521 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 235/40ZR18 XL tires cost?
A single tire is $148.50 and a set of four is $594.00.
Does the NT555 G2 come in other sizes?
Yes — we stock 64 additional NT555 G2 sizes besides 235/40ZR18 XL. Fit only a size approved for your vehicle.
Other sizes of this model
225/35ZR20 XL — $151.50
225/40ZR18 XL — $135.75
225/45ZR17 XL — $126.75
225/45ZR18 XL — $151.50
225/50ZR17 XL — $129.75
235/35ZR19 XL — $176.25
235/35ZR20 XL — $176.25
235/45ZR17 XL — $124.50
235/50ZR18 XL — $159.75
245/30ZR20 XL — $167.25
245/35ZR19 XL — $189.75
245/35ZR20 XL — $154.50
245/40ZR18 XL — $161.25
245/40ZR20 XL — $187.50
245/45ZR17 XL — $133.50
245/45ZR18 XL — $171.75
245/45ZR19 XL — $199.50
245/45ZR20 XL — $182.25
255/35ZR18 XL — $189.75
255/35ZR20 XL — $151.50
255/40ZR17 XL — $133.50
255/40ZR19 XL — $212.25
255/45ZR17 XL — $139.50
255/45ZR18 XL — $178.50
255/45ZR20 XL — $187.50
255/50ZR17 — $148.50
265/35ZR18 XL — $189.75
265/35ZR19 XL — $217.50
265/35ZR20 XL — $210.75
265/35ZR22 XL — $225.75
