225/65R18 Tires

Understanding 225/65R18 tire size is crucial for making informed decisions when purchasing new tires, whether it is for replacement or upgrade, as it plays an important role in your vehicle's performance and safety. Let's explore 225/65R18 tire specs and dimensions, what vehicles come equipped with 225/65R18 tires, what are its replacement options, and where to buy 225/65R18 tires at lowest prices online.

Buy 225/65R18 Tires from $168.96

How to read 225/65R18 tire size?

225/65R18 is a Metric tire size that is commonly used on passenger and crossover vehicles.

Let us decode each aspect of 225/65R18 tire size dimensions for better understanding:

  • 225 indicates tire's section width, which includes the entire width of the tire from one sidewall to the other. The tread width is typically a bit narrower than the section width. Section width of 225/65R18 tire is 225 millimeters.
  • 65 represents the aspect ratio of a tire. It is the ratio of the tire's sidewall height to its width. For 225/65R18 tire, the sidewall height is 65% of its tread width.
  • R denotes that tire has radial construction.
  • 18 indicates the wheel diameter in inches that the tire is designed to fit. 225/65R18 can be mounted on rims with 18 inches in diameter.

You can learn more about tire size markings on tire sidewall with our comprehensive guide on how to read tire size.

225/65R18 Tire Dimensions

Compare and visualize 225/65R18 tire dimensions in both inches and millimeters. Tire size calculator will help you calculate the dimensions of any tire size.

225/65R18 Section Width
8.9"
29.5"
225/65R18 Tire Side
Tire Circumference
92.6"
18"
5.7"
684 Revs/Mile
Metric Inches
Tire Width 225 mm 8.9"
Aspect Ratio 65%
Rim Diameter 457 mm 18"
Tire Diameter 749 mm 29.5"
Sidewall Height 146 mm 5.7"
Circumference 2352 mm 92.6"
Revolutions 425 per km 684 per mile

225/65R18 Tire Width

Tire width is the measurement of the tire's cross-section at its widest point. 225/65R18 tire has a width of 225 millimeters or 8.9 inches.

Tires with section width of 225 millimeters come equipped on a variety of crossovers, minivans, passenger cars, pickup trucks, sport utility vehicles and vans.

Tires with width of 225 millimeters are considered fairly wide. This width offers enhanced traction and stability, which is crucial for handling heavier vehicles or providing better performance and driving dynamics.

Tire width plays a pivotal role in determining a vehicle's handling, safety, and efficiency. It is crucial to consider the compatibility of tire width with the vehicle's design and the manufacturer's specifications to maintain optimal functionality and ensure safety.

Tire Width
8.9"

225/65R18 Aspect Ratio

Tire aspect ratio represents the height of the tire's sidewall as a percentage of its width. 225/65R18 tire size has an aspect ratio of 65%.

Tires with an aspect ratio of 65 represent a category that balances performance with comfort, making them suitable for a wide range of vehicles. This tire width is particularly common in modern passenger cars, including sedans, coupes, crossovers and SUVs.

Tires with this aspect ratio offer a good compromise between the agile handling of lower profiles and the increased comfort of higher profiles. They are designed to meet the needs of drivers who want a blend of comfort, handling, and aesthetic appeal.

225/65R18 Rim Diameter

Rim diameter refers to the diameter of the wheel on which the tire is mounted, commonly measured in inches. 225/65R18 tire can be mounted on 18-inch wheels. The rim diameter directly correlates with the overall diameter of the tire and affects various aspects of vehicle performance and aesthetics.

Tires with rim diameter of 18 inches are equipped on a select crossover, minivan, passenger car, pickup truck and sport utility vehicle models.

18-inch rims are typical for performance-oriented vehicles, including sports cars and high-end sedans. 18-inch rims allow for the fitting of larger brakes, which are crucial for high-performance vehicles, and can also enhance the vehicle's handling characteristics and appearance.

When selecting a rim diameter, it's crucial to consider the vehicle's design specifications, as altering the rim size can affect the speedometer and odometer calibration, vehicle handling, suspension geometry, and brake clearance.

Rim Diameter
18"

225/65R18 Tire Diameter / Height

Tire diameter represens the total height of a tire, including the rim, when it is fully inflated and not under load. 225/65R18 tire height is 749 millimeters or 29.5 inches.

Tire height affects the clearance between the tire and the vehicle's body or chassis, influences the vehicle's ground clearance, and can impact the accuracy of the vehicle's speedometer and odometer.

For standard passenger cars, tire diameters typically range from about 24 to 30 inches. This includes sedans, hatchbacks, small SUVs, and minivans. Light trucks and larger SUVs might have tires on the higher end of this range or slightly above, often between 29 to 33 inches. Sports cars and high-performance vehicles may have similar diameter ranges as standard passenger cars, but they often feature wider tires with a lower aspect ratio, which can slightly affect the overall diameter. The range for these vehicles is typically between 24 to 30 inches, focusing more on width and profile for performance. Off-road vehicles, including larger SUVs, trucks, and specialized vehicles, often have larger tire diameters to handle rough terrain better. The diameters for these vehicles can range from about 31 to 40 inches or more, depending on the level of off-road capability and customization.

Tire Diameter
29.5"

225/65R18 Sidewall Height

Tire sidewall height, determined by the aspect ratio of a tire, represents the height of the tire's sidewall, measured from the edge of the rim to the top of the tread. 225/65R18 tire sidewall is 146 millimeters or 5.7 inches tall.

Sidewall height affects the tire's ability to dissipate heat and impacts its load-bearing capacity. It also plays a role in aesthetic appeal for many drivers, influencing the overall look of the vehicle.

Tires with a sidewall height of 5.7" offer a balance between performance and comfort, and are common on popular sedans, minivans, light trucks and SUVs.

Sidewall Height
5.7"

225/65R18 Circumference

Tire circumference is the total distance around the outer edge of the tire. 225/65R18 tire has a circumference of 2352 millimeters or 92.6 inches.

Tires with a circumference of 92.6 inches are typically used on light trucks and SUVs, sports and performance cars. For trucks, the larger circumference is beneficial for off-road performance, providing greater traction and a smoother ride over rough terrain. The downside is often reduced fuel efficiency and potentially slower acceleration due to the larger size and weight of the tires. For sports and performance vehicls, the benefit here is enhanced grip and handling for high-speed driving, although ride comfort might be compromised due to the lower profile associated with these tires.

Tire circumference directly influences the speedometer and odometer readings of a vehicle. Mismatched tire circumferences, especially on the same axle, can lead to uneven wear, handling issues, and even mechanical damage, particularly in all-wheel or four-wheel-drive vehicles.

225/65R18 Circumference
Tire Circumference
92.6"

225/65R18 Revolutions

Tire revolutions metric reflects the number of times a tire rotates over a fixed distance. This figure is inherently tied to the tire's circumference - the larger the circumference, the fewer the revolutions needed to cover a mile, and vice versa. 225/65R18 tire makes 425 revolutions per kilometer or 684 revolutions per mile.

Number of the revolutions a tire makes affects greatly vehicle's performance, from speed and distance measurement accuracy to handling, fuel efficiency, and wear and tear.

Popular 225/65R18 tire models

Listed below are most affordable tire models available in 225/65R18 tire size.

Shop more 225/65R18 tires with tire finder.

What is 225/65R18 in inches?

When converted to inches, 225/65R18 tire size is equivalent to 29.5x8.9R18. 29.5 inches indicate the tire diameter, 8.9 inches represent tread width, and 18 inches is the diameter of a rim the tire can be mounted on.

Learn more about 225/65R18 in inches conversion.

225/65R18 Vehicle Fitment

No vehicles that are equipped with 225/65R18 OEM tire size have been found in our database.

What are replacement sizes for 225/65R18 tire?

225/65R18 alternative has to be within 3% of the original tire's overall diameter to ensure safe drive and proper speedometer readings. Below is a list of 225/65R18 equivalent and plus sizes that are within the optimal characteristics and dimensions of the orignal tire size.

Keep in mind that different vehicles have different tire requirements. Passenger cars, SUVs, trucks, and high-performance vehicles each have specific types of tires that are engineered for their particular needs. When replacing tires on your vehicle, always refer to your vehicle's owner's manual for manufacturer recommendations on tire size, type, and other specifications.

Replacement Tire Size Tire Diameter Difference
P235/65R18 1.9%
P235/60R18 -1.3%
P225/60R18 -2.9%
235/65R18 1.9%
235/60R18 -1.3%
225/60R18 -2.9%
235/60R19 2.1%
235/55R19 -1.1%
P225/55R19 -2.4%
P235/55R19 -1.1%
225/55R19 -2.4%
235/55R20 2.3%
235/50R20 -0.7%
P235/55R20 2.3%

What wheels can 225/65R18 tire be mounted on?

225/65R18 tires are generally approved to be mounted on 6" to 8" wide wheels. The following wheel sizes can be used:

  • 18x6
  • 18x6.5
  • 18x7
  • 18x7.5
  • 18x8

It is important to note that while a tire might physically fit on a wheel outside of the recommended widths, doing so can affect the tire's performance, handling, and wear. Always refer to your vehicle's manufacturer guidelines and the tire manufacturer's specifications for the best results.

225/65R18 Tire Size Comparison Chart

Below is a comparison chart where we compare 225/65R18 tire size with other popular sizes. Green indicates that new tire diameter is within the acceptable 3% of the original, while red warns that tire will adversely affect the vehicle's speedometer reading, handling characteristics, or clearance in the wheel well. We recommend to use the tire size comparison tool to ensure proper compatibility when switching to a new tire size.

Tire Size Comparison Tire Diameter Difference
225/65R18 vs 285/30R18 -16%
225/65R18 vs P255/70R18 8.8%
225/65R18 vs P255/65R18 5.3%
225/65R18 vs 255/40R18 -11.7%
225/65R18 vs P245/60R18 0.3%
225/65R18 vs 255/45R18 -8.3%
225/65R18 vs P245/40R18 -12.8%
225/65R18 vs P235/65R18 1.9%
225/65R18 vs 255/55R18 -1.6%
225/65R18 vs 255/35R18 -15.2%
225/65R18 vs P265/60R18 3.5%
225/65R18 vs 275/45R18 -5.9%
225/65R18 vs 245/50R18 -6.1%
225/65R18 vs 265/40R18 -10.7%
225/65R18 vs 265/35R18 -14.2%
225/65R18 vs P275/65R18 8.8%
225/65R18 vs 265/65R18 6.9%
225/65R18 vs 245/60R18 0.3%
225/65R18 vs P265/65R18 6.9%
225/65R18 vs P235/60R18 -1.3%
225/65R18 vs 255/60R18 1.9%
225/65R18 vs P235/50R18 -7.5%
225/65R18 vs LT275/65R18 8.8%
225/65R18 vs LT265/70R18 10.5%
225/65R18 vs 265/60R18 3.5%
225/65R18 vs 265/70R18 10.7%
225/65R18 vs 295/30R18 -15.2%
225/65R18 vs 275/35R18 -13.4%
225/65R18 vs 285/60R18 6.7%
225/65R18 vs 275/40R18 -9.6%
225/65R18 vs LT285/75R18 18.2%
225/65R18 vs LT305/70R18 18%
225/65R18 vs 255/65R18 5.3%
225/65R18 vs 255/70R18 8.8%
225/65R18 vs P225/60R18 -2.9%
225/65R18 vs P225/55R18 -5.9%
225/65R18 vs LT275/70R18 12.4%
225/65R18 vs P225/45R18 -12%
225/65R18 vs P215/55R18 -7.5%
225/65R18 vs LT325/65R18 17.5%
225/65R18 vs 275/65R18 8.8%
225/65R18 vs 245/55R18 -2.9%
225/65R18 vs LT285/70R18 14.3%
225/65R18 vs 225/50R18 -8.8%
225/65R18 vs 225/55R18 -5.9%
225/65R18 vs LT285/65R18 10.5%
225/65R18 vs 225/60R18 -2.9%
225/65R18 vs LT285/60R18 6.7%
225/65R18 vs LT265/65R18 7.1%
225/65R18 vs 235/40R18 -13.9%
225/65R18 vs LT265/60R18 3.5%
225/65R18 vs 225/45R18 -12%
225/65R18 vs LT295/70R18 16.2%
225/65R18 vs 205/40R18 -17.1%
225/65R18 vs 215/40R18 -16%
225/65R18 vs 215/45R18 -13.1%
225/65R18 vs LT325/60R18 13.1%
225/65R18 vs 215/50R18 -10.1%
225/65R18 vs 215/55R18 -7.5%
225/65R18 vs LT305/65R18 14%
225/65R18 vs LT305/60R18 9.9%
225/65R18 vs 225/40R18 -15%
225/65R18 vs 275/60R18 5.1%
225/65R18 vs 235/45R18 -10.7%
225/65R18 vs 295/35R18 -11.5%
225/65R18 vs 235/60R18 -1.3%
225/65R18 vs 235/65R18 1.9%
225/65R18 vs 245/35R18 -16%
225/65R18 vs P265/70R18 10.7%
225/65R18 vs 245/40R18 -12.8%
225/65R18 vs 285/35R18 -12.3%
225/65R18 vs 245/45R18 -9.6%
225/65R18 vs 235/55R18 -4.5%
225/65R18 vs 215/35R18 -19%
225/65R18 vs 315/30R18 -13.6%
225/65R18 vs 235/50R18 -7.5%
225/65R18 vs 305/35R19 -6.9%
225/65R18 vs P235/50R19 -4%
225/65R18 vs 285/35R19 -8.8%
225/65R18 vs 285/30R19 -12.6%
225/65R18 vs P235/55R19 -1.1%
225/65R18 vs 275/55R19 4.8%
225/65R18 vs 265/35R19 -10.7%
225/65R18 vs 325/30R19 -9.3%
225/65R18 vs 295/35R19 -8%
225/65R18 vs 285/45R19 -1.3%
225/65R18 vs 285/40R19 -5.1%
225/65R18 vs P245/45R19 -6.1%
225/65R18 vs 305/30R19 -10.9%
225/65R18 vs 295/30R19 -11.7%
225/65R18 vs P245/55R19 0.5%
225/65R18 vs 295/40R19 -4%
225/65R18 vs P255/60R19 5.3%
225/65R18 vs 275/50R19 1.3%
225/65R18 vs 245/45R19 -6.1%
225/65R18 vs 245/40R19 -9.3%
225/65R18 vs 235/35R19 -13.6%
225/65R18 vs 255/60R19 5.3%
225/65R18 vs 265/30R19 -14.2%
225/65R18 vs 235/45R19 -7.2%
225/65R18 vs 265/40R19 -7.2%
225/65R18 vs 265/45R19 -3.7%
225/65R18 vs 235/40R19 -10.4%
225/65R18 vs 255/55R19 1.9%
225/65R18 vs 255/50R19 -1.3%
225/65R18 vs 235/50R19 -4%
225/65R18 vs 245/50R19 -2.7%
225/65R18 vs 155/70R19 -6.4%
225/65R18 vs 245/35R19 -12.6%
225/65R18 vs 245/55R19 0.5%
225/65R18 vs 255/30R19 -15%
225/65R18 vs 255/40R19 -8.3%
225/65R18 vs 235/55R19 -1.1%
225/65R18 vs 255/45R19 -4.8%
225/65R18 vs 265/50R19 0%
225/65R18 vs 275/35R19 -9.9%
225/65R18 vs 275/30R19 -13.4%
225/65R18 vs 255/35R19 -11.7%
225/65R18 vs 225/45R19 -8.5%
225/65R18 vs 225/55R19 -2.4%
225/65R18 vs 275/40R19 -6.1%
225/65R18 vs 265/55R19 3.5%
225/65R18 vs 225/35R19 -14.4%
225/65R18 vs 225/40R19 -11.5%
225/65R18 vs 275/45R19 -2.4%
225/65R18 vs 235/50R20 -0.7%
225/65R18 vs 245/40R20 -6%
225/65R18 vs 295/35R20 -4.7%
225/65R18 vs 225/35R20 -11.1%
225/65R18 vs P235/55R20 2.3%
225/65R18 vs 235/55R20 2.3%
225/65R18 vs 295/30R20 -8.4%
225/65R18 vs 245/30R20 -12.4%
225/65R18 vs LT325/60R20 19.9%
225/65R18 vs 245/35R20 -9.2%
225/65R18 vs 215/45R20 -6.3%
225/65R18 vs 305/40R20 0.4%
225/65R18 vs LT275/60R20 11.9%
225/65R18 vs 235/35R20 -10.3%
225/65R18 vs LT285/55R20 9.7%
225/65R18 vs 305/50R20 8.7%
225/65R18 vs 295/25R20 -12.4%
225/65R18 vs 315/35R20 -2.8%
225/65R18 vs 235/40R20 -7.1%
225/65R18 vs 245/60R20 7.1%
225/65R18 vs LT285/65R20 17.4%
225/65R18 vs 235/45R20 -3.9%
225/65R18 vs LT305/55R20 12.7%
225/65R18 vs LT295/55R20 11.2%
225/65R18 vs 315/30R20 -6.8%
225/65R18 vs LT295/60R20 15.1%
225/65R18 vs LT295/65R20 19.1%
225/65R18 vs LT275/55R20 8.3%
225/65R18 vs 245/45R20 -2.8%
225/65R18 vs 275/50R20 4.7%
225/65R18 vs LT275/65R20 15.6%
225/65R18 vs 265/50R20 3.3%
225/65R18 vs LT265/60R20 10.3%
225/65R18 vs 305/35R20 -3.6%
225/65R18 vs 305/30R20 -7.6%
225/65R18 vs 295/45R20 3.3%
225/65R18 vs 295/40R20 -0.7%
225/65R18 vs 275/30R20 -10%
225/65R18 vs 285/50R20 6%
225/65R18 vs 285/45R20 2%
225/65R18 vs 285/40R20 -1.7%
225/65R18 vs 285/35R20 -5.5%
225/65R18 vs 275/35R20 -6.5%
225/65R18 vs 285/30R20 -9.2%
225/65R18 vs 275/60R20 11.9%
225/65R18 vs 275/55R20 8.1%
225/65R18 vs LT285/60R20 13.5%
225/65R18 vs 265/45R20 -0.4%
225/65R18 vs 245/50R20 0.7%
225/65R18 vs P275/60R20 11.9%
225/65R18 vs P275/55R20 8.1%
225/65R18 vs 255/30R20 -11.6%
225/65R18 vs 275/45R20 0.9%
225/65R18 vs 255/35R20 -8.4%
225/65R18 vs P255/50R20 2%
225/65R18 vs P255/45R20 -1.5%
225/65R18 vs 255/40R20 -4.9%
225/65R18 vs P245/50R20 0.7%
225/65R18 vs 255/45R20 -1.5%
225/65R18 vs 255/50R20 2%
225/65R18 vs 255/55R20 5.2%
225/65R18 vs 255/60R20 8.7%
225/65R18 vs 265/30R20 -10.8%
225/65R18 vs 265/35R20 -7.3%
225/65R18 vs 265/40R20 -3.9%
225/65R18 vs 275/40R20 -2.8%

All listed guides, data and/or calculations are for informational purposes only. TireSizes.com does not warrant or make any representations regarding the accuracy of or the results of the use of this information.