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p315-40zr18 tires

NT555 G2

Ultra High Performance (or UHP) tires have a speed rating of V or greater and are used on sports cars, super cars, and other powerful vehicles. Commonly featuring a wide footprint and low profile, UHP tires provide excellent traction and steering response but should not be used when temperatures are at 40 degrees or below.

Passenger tires are some of the most common tires you'll find on the roads today, and frequently used on coupes, sedans, hatchbacks, minivans, and other passenger vehicles. Passenger tires are available in a wide variety of types, such as all-season, winter, and ultra-high-performance.

This product is not covered by a manufacturer’s treadlife warranty.

Mileage Warranty

The maximum load carrying strength at the specified inflation pressure, also known as ply rating.

The side of the tire between the tread and rim, with cosmetic branding as well as information about the tire including manufacturer, model, size, etc.

Sidewall

Standards that measure treadwear, temperature resistance and traction, example: "640 A A".  The 640 is the treadwear test and it lasted 6.4 times longer than the comparison tire tested against.  The first "A" is the traction rating using straight-line wet traction on test surfaces (see information tables tab) and the second "A" is the temperature rating by testing operation at high speeds without heat-related failure (see information tables tab).

UTQG

Wet Traction is a piece of the UTQG for example if  UTQG is: 500 AA A, the wet traction piece is the second piece, the "AA".

Wet Traction

Measured in 32nds of an inch, this metric shows how much tread life is left on a tire, with the tire's traction & stopping capabilities greatly diminished at 4/32nds and less. Tire manufacturers include "tire wear bars" at 2/32nds to indicate when your tire is worn out.

Tread Depth

The highest inflation pressure (measured in pounds of force per square inch, PSI) the tire is designed to contain, and should only be used when called for by the vehicle placard.

Inflation Pressure

An identifier of a particular tire line and size combination assigned by the tire manufacturer.

Part Number

Tread design (or tread pattern) can affect handling, traction & noise for different driving styles & road conditions.

Tread Design

Tire Weight

The measurement of width from a tires inner sidewall to the outer sidewall.

Section Width

The range of widths the rim of the vehicle can be for this tire to be safely mounted on.

Rim Range

The diameter of a tire that is inflated without any load applied.

Overall Diameter

NT555RII

Racing tires offer drivers strong performance on the drag strip, race track, street track, or dirt track. These tires are available in different varieties, but are typically built to provide quicker acceleration, responsive steering, and improved braking for faster lap times.

The maximum carrying capacity for a tire determined by the manufacturer.

Load Index

Maximum speed capability to safely carry a load for an extended period of time.

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p315/40zR18 passenger Tires

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Nitto NT555 G2
P315/40ZR18 | In stock

Category
UHP
Vehicle
Passenger
Mileage Warranty
N/A

Load Range
Standard (SL)
Sidewall
Blackwall
UTQG
200AAA
Wet Traction
AA
Tread Depth
9.1/32nds
Inflation Pressure
44 PSI
Part Number
215750
Tread Design
Symmetrical
Tire Weight
35.05 lbs
Section Width
12.6"
Rim Range
10.50-12.50"
Overall Diameter
27.91"

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Nitto NT555RII
P315/40R18 102W LL | In stock

Category
Racing
Vehicle
Passenger
Mileage Warranty
N/A

Load Index
1874 lbs (102)
Max Speed
168 MPH (W)
Load Range
Light (LL)
Sidewall
Blackwall
UTQG
100AA
Wet Traction
A
Tread Depth
6.3/32nds
Inflation Pressure
44 PSI
Part Number
108770
Tread Design
Symmetrical
Tire Weight
31.57 lbs
Section Width
12.6"
Rim Range
10.50-12.50"
Overall Diameter
27.91"

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p315/40zR18 passenger Tires

Nitto NT555 G2P315/40ZR18 | In stock

CategoryUHPVehiclePassengerMileage WarrantyN/A

Load RangeStandard (SL)SidewallBlackwallUTQG200AAAWet TractionAATread Depth9.1/32ndsInflation Pressure44 PSIPart Number215750Tread DesignSymmetricalTire Weight35.05 lbsSection Width12.6"Rim Range10.50-12.50"Overall Diameter27.91"

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Nitto NT555RIIP315/40R18 102W LL | In stock

CategoryRacingVehiclePassengerMileage WarrantyN/A

Load Index1874 lbs (102)Max Speed168 MPH (W)Load RangeLight (LL)SidewallBlackwallUTQG100AAWet TractionATread Depth6.3/32ndsInflation Pressure44 PSIPart Number108770Tread DesignSymmetricalTire Weight31.57 lbsSection Width12.6"Rim Range10.50-12.50"Overall Diameter27.91"