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315-40r21 tires

Iota ST68

Like  their name suggest, all season tires are designed to give drivers performance year-round. All-season tires often provide strong performance in dry and wet conditions, and suitable traction and grip in wintery weather.

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 covered by a 35,000 mile manufacturer’s treadlife warranty. Merchandise covered by a manufacturer’s warranty is sold with the warranty by the 
        manufacturer extended to the purchaser. We will be happy to assist in obtaining fulfillment of a manufacturer’s 
        warranty. Other than applicable manufacturers’ warranties, there are no warranties, express or implied, 
        including any warranty of merchantability or fitness for a particular purpose. The only tires SimpleTire can 
        warranty are brand new defects (meaning that they have not been mounted or driven on). Any bead damaged will be 
        void of any warranty claim. Any other adjustments should be taken to the nearest authorized dealer for that 
        manufacturer. Sometimes the manufacturer also provides a treadlife warranty and mileage rating. Please be aware 
        that not all tires hold a mileage warranty from the manufacturer. Different tire models, even from the same 
        manufacturer, may or may not come with a treadlife warranty.

Mileage Warranty

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.

Max Speed

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

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

27 tires available in 315-40r21

In Size 315-40r21

**Most drivers choose from our top picks**<br />They include the best matches 
                     of this tire size based on popularity, user ratings, and price.

We'll start with our 5 top picks

With similar, but improved specs to the factory tire

Best match:

Best match to original tire

Scorpion Zero All Season

SUV/Crossover tires are designed for use on SUVs and CUVs and provide many of the same performance characteristics as passenger tires but are built to handle the heavier weight that's common from these larger vehicles.

Based on verified customer reviews, this tire has been highly rated.

Top rated:

Best customer reviewed tire.

Consistently rated as excellent by experts with the highest SimpleScore among the top 5 tires.

Top SimpleScore&trade;:

Chosen by our tire experts.

Alenza Sport A/S

Ultra-high-performance all-season tires provide sporty traction and handling plus quick acceleration and braking in dry, wet, and light winter weather.

This product is covered by a 40,000 mile manufacturer’s treadlife warranty. Merchandise covered by a manufacturer’s warranty is sold with the warranty by the 
        manufacturer extended to the purchaser. We will be happy to assist in obtaining fulfillment of a manufacturer’s 
        warranty. Other than applicable manufacturers’ warranties, there are no warranties, express or implied, 
        including any warranty of merchantability or fitness for a particular purpose. The only tires SimpleTire can 
        warranty are brand new defects (meaning that they have not been mounted or driven on). Any bead damaged will be 
        void of any warranty claim. Any other adjustments should be taken to the nearest authorized dealer for that 
        manufacturer. Sometimes the manufacturer also provides a treadlife warranty and mileage rating. Please be aware 
        that not all tires hold a mileage warranty from the manufacturer. Different tire models, even from the same 
        manufacturer, may or may not come with a treadlife warranty.

Save on this  tire today.

Best deal:

Save even more.

Grand Sport A/S

Most popular among drivers in PA

Best seller:

Go with the best seller

LX-Twenty

Performance tires are designed for use on sports cars and performance-oriented vehicles. These tires are usually at their best in above freezing temperatures, and offer drivers responsive handling, improved acceleration, and strong braking capabilities.

This product is covered by a 55,000 mile manufacturer’s treadlife warranty. Merchandise covered by a manufacturer’s warranty is sold with the warranty by the 
        manufacturer extended to the purchaser. We will be happy to assist in obtaining fulfillment of a manufacturer’s 
        warranty. Other than applicable manufacturers’ warranties, there are no warranties, express or implied, 
        including any warranty of merchantability or fitness for a particular purpose. The only tires SimpleTire can 
        warranty are brand new defects (meaning that they have not been mounted or driven on). Any bead damaged will be 
        void of any warranty claim. Any other adjustments should be taken to the nearest authorized dealer for that 
        manufacturer. Sometimes the manufacturer also provides a treadlife warranty and mileage rating. Please be aware 
        that not all tires hold a mileage warranty from the manufacturer. Different tire models, even from the same 
        manufacturer, may or may not come with a treadlife warranty.

315/40R21 accelera Tires

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Maximum Load Index

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Minimum Speed Rating

Warranty

Accelera Iota ST68
315/40ZR21 115Y XL | In stock

Category
All Season
Vehicle
Passenger
Mileage Warranty
35k

Load Index
2679 lbs (115)
Max Speed
186 MPH (Y)
Load Range
Extra (XL)
Sidewall
Blackwall
UTQG
400AA
Wet Traction
A
Tread Depth
10.5/32nds
Inflation Pressure
51 PSI
Part Number
1200054492
Tread Design
Asymmetrical
Tire Weight
38 lbs
Section Width
12.6"
Rim Range
11"
Overall Diameter
30.9"

Join the SimpleCrew and get exclusive perks.

Accelera Iota ST68
315/40ZR21 115W XL | In stock

Category
All Season
Vehicle
Passenger
Mileage Warranty
N/A

Load Index
2679 lbs (115)
Max Speed
168 MPH (W)
Load Range
Extra (XL)
UTQG
400AA
Wet Traction
A
Tread Depth
10/32nds
Inflation Pressure
51 PSI
Part Number
1200060589
Tread Design
Asymmetrical
Tire Weight
43 lbs
Section Width
12.6"
Overall Diameter
30.9"

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315/40R21 accelera Tires

Accelera Iota ST68315/40ZR21 115Y XL | In stock

CategoryAll SeasonVehiclePassengerMileage Warranty35k

Load Index2679 lbs (115) Max Speed186 MPH (Y) Load RangeExtra (XL) SidewallBlackwall UTQG400AA Wet TractionA Tread Depth10.5/32nds Inflation Pressure51 PSI Part Number1200054492 Tread DesignAsymmetrical Tire Weight38 lbs Section Width12.6" Rim Range11" Overall Diameter30.9"

Join the SimpleCrew and get exclusive perks.

Accelera Iota ST68315/40ZR21 115W XL | In stock

CategoryAll SeasonVehiclePassengerMileage WarrantyN/A

Load Index2679 lbs (115) Max Speed168 MPH (W) Load RangeExtra (XL) UTQG400AA Wet TractionA Tread Depth10/32nds Inflation Pressure51 PSI Part Number1200060589 Tread DesignAsymmetrical Tire Weight43 lbs Section Width12.6" Overall Diameter30.9"