285/45R20 Tires

Understanding 285/45R20 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 285/45R20 tire specs and dimensions, what vehicles come equipped with 285/45R20 tires, what are its replacement options, and where to buy 285/45R20 tires at lowest prices online.

Buy 285/45R20 Tires from $262.35

How to read 285/45R20 tire size?

285/45R20 is a Metric tire size that is commonly used on passenger and crossover vehicles.

Let us decode each aspect of 285/45R20 tire size dimensions for better understanding:

  • 285 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 285/45R20 tire is 285 millimeters.
  • 45 represents the aspect ratio of a tire. It is the ratio of the tire's sidewall height to its width. For 285/45R20 tire, the sidewall height is 45% of its tread width.
  • R denotes that tire has radial construction.
  • 20 indicates the wheel diameter in inches that the tire is designed to fit. 285/45R20 can be mounted on rims with 20 inches in diameter.

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

285/45R20 Tire Dimensions

Compare and visualize 285/45R20 tire dimensions in both inches and millimeters. Tire size calculator will help you calculate the dimensions of any tire size.

285/45R20 Section Width
11.2"
30.1"
285/45R20 Tire Side
Tire Circumference
94.5"
20"
5"
670 Revs/Mile
Metric Inches
Tire Width 285 mm 11.2"
Aspect Ratio 45%
Rim Diameter 508 mm 20"
Tire Diameter 764 mm 30.1"
Sidewall Height 128 mm 5"
Circumference 2399 mm 94.5"
Revolutions 417 per km 670 per mile

285/45R20 Tire Width

Tire width is the measurement of the tire's cross-section at its widest point. 285/45R20 tire has a width of 285 millimeters or 11.2 inches.

Tires with section width of 285 millimeters come equipped on a variety of crossovers, passenger cars, pickup trucks and sport utility vehicles.

Tire width of 285 millimeters falls under extra wide category. For trucks and SUVs, extra wide tires offer enhanced stability and load-carrying capacity. For high-end sports cars and supercars they offer maximum traction and performance at high speeds.

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
11.2"

285/45R20 Aspect Ratio

Tire aspect ratio represents the height of the tire's sidewall as a percentage of its width. 285/45R20 tire size has an aspect ratio of 45%.

Tires with an aspect ratio of 45 fall into the category of low profile tires. These are commonly found on sports cars and high-performance luxury vehicles. The low profile (short sidewall height relative to tire width) enhances the vehicle's handling and responsiveness, particularly at high speeds and during sharp cornering. They contribute to a car's aggressive and sporty aesthetic.

Wider contact patch with the road surface allows for better traction, which is crucial for acceleration, braking, and cornering performance. However, it may also lead to increased road noise and a decrease in fuel or energy efficiency compared to tires with higher aspect ratios.

285/45R20 Rim Diameter

Rim diameter refers to the diameter of the wheel on which the tire is mounted, commonly measured in inches. 285/45R20 tire can be mounted on 20-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 20 inches are equipped on a select crossover, minivan, passenger car, pickup truck, sport utility vehicle and van models.

20-inch rims are often used on high-end SUVs, light trucks, or high-performance sports cars. 20-inch rims are usually chosen for aesthetic reasons, or to accommodate larger, more robust tires needed for off-road or heavy-load conditions.

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
20"

285/45R20 Tire Diameter / Height

Tire diameter represens the total height of a tire, including the rim, when it is fully inflated and not under load. 285/45R20 tire height is 764 millimeters or 30.1 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
30.1"

285/45R20 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. 285/45R20 tire sidewall is 128 millimeters or 5 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" offer a balance between performance and comfort, and are common on popular sedans, minivans, light trucks and SUVs.

Sidewall Height
5"

285/45R20 Circumference

Tire circumference is the total distance around the outer edge of the tire. 285/45R20 tire has a circumference of 2399 millimeters or 94.5 inches.

Tires with a circumference of 94.5 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.

285/45R20 Circumference
Tire Circumference
94.5"

285/45R20 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. 285/45R20 tire makes 417 revolutions per kilometer or 670 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 285/45R20 tire models

Listed below are most affordable tire models available in 285/45R20 tire size.

Shop more 285/45R20 tires with tire finder.

What is 285/45R20 in inches?

When converted to inches, 285/45R20 tire size is equivalent to 30.1x11.2R20. 30.1 inches indicate the tire diameter, 11.2 inches represent tread width, and 20 inches is the diameter of a rim the tire can be mounted on.

Learn more about 285/45R20 in inches conversion.

285/45R20 Vehicle Fitment

There is 1 vehicle model that uses 285/45R20 as an original equipment tire size. It's important to consult your vehicle's owner manual or a tire fitment guide specific to your car model to ensure this tire size is compatible with your vehicle. Vehicle manufacturers recommend specific tire sizes to ensure optimal performance and safety.

Select your vehicle model for its OEM tire size configuration.

What are replacement sizes for 285/45R20 tire?

285/45R20 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 285/45R20 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
275/50R20 2.6%
295/40R20 -2.6%
P275/45R20 -1%
275/45R20 -1%
295/45R20 1.3%
285/40R21 -0.4%
295/40R21 0.7%
275/45R21 2.2%
275/40R21 -1.4%
275/35R22 -1.7%
285/35R22 -0.7%
275/40R22 2%
295/35R22 0.1%

What wheels can 285/45R20 tire be mounted on?

285/45R20 tires are generally approved to be mounted on 9" to 10.5" wide wheels. The following wheel sizes can be used:

  • 20x9
  • 20x9.5
  • 20x10
  • 20x10.5

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.

285/45R20 Tire Size Comparison Chart

Below is a comparison chart where we compare 285/45R20 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
285/45R20 vs LT305/55R20 10.5%
285/45R20 vs P245/50R20 -1.3%
285/45R20 vs P235/55R20 0.3%
285/45R20 vs LT285/60R20 11.3%
285/45R20 vs LT265/60R20 8.1%
285/45R20 vs 305/35R20 -5.5%
285/45R20 vs 305/30R20 -9.4%
285/45R20 vs 295/45R20 1.3%
285/45R20 vs 295/40R20 -2.6%
285/45R20 vs 285/50R20 3.9%
285/45R20 vs LT275/65R20 13.4%
285/45R20 vs 285/40R20 -3.7%
285/45R20 vs 285/35R20 -7.3%
285/45R20 vs 285/30R20 -11%
285/45R20 vs 275/60R20 9.7%
285/45R20 vs 275/55R20 6%
285/45R20 vs 275/50R20 2.6%
285/45R20 vs 275/45R20 -1%
285/45R20 vs P255/45R20 -3.4%
285/45R20 vs P255/50R20 0%
285/45R20 vs P275/55R20 6%
285/45R20 vs LT295/65R20 16.8%
285/45R20 vs LT295/60R20 12.8%
285/45R20 vs LT295/55R20 9%
285/45R20 vs LT285/65R20 15.1%
285/45R20 vs LT285/55R20 7.6%
285/45R20 vs LT275/60R20 9.7%
285/45R20 vs LT275/55R20 6.2%
285/45R20 vs 305/50R20 6.5%
285/45R20 vs 295/25R20 -14.1%
285/45R20 vs 245/60R20 5%
285/45R20 vs 315/35R20 -4.7%
285/45R20 vs 315/30R20 -8.6%
285/45R20 vs 305/40R20 -1.6%
285/45R20 vs LT325/60R20 17.5%
285/45R20 vs 295/35R20 -6.5%
285/45R20 vs 295/30R20 -10.2%
285/45R20 vs P275/60R20 9.7%
285/45R20 vs 275/40R20 -4.7%
285/45R20 vs 255/40R20 -6.8%
285/45R20 vs 265/45R20 -2.4%
285/45R20 vs 235/40R20 -8.9%
285/45R20 vs 235/45R20 -5.8%
285/45R20 vs 265/30R20 -12.6%
285/45R20 vs 245/45R20 -4.7%
285/45R20 vs 255/50R20 0%
285/45R20 vs 235/55R20 0.3%
285/45R20 vs 265/40R20 -5.8%
285/45R20 vs 255/30R20 -13.4%
285/45R20 vs 235/50R20 -2.6%
285/45R20 vs 255/35R20 -10.2%
285/45R20 vs 245/50R20 -1.3%
285/45R20 vs 235/35R20 -12%
285/45R20 vs 245/35R20 -11%
285/45R20 vs 255/60R20 6.5%
285/45R20 vs 245/40R20 -7.9%
285/45R20 vs 245/30R20 -14.1%
285/45R20 vs 255/55R20 3.1%
285/45R20 vs 275/35R20 -8.4%
285/45R20 vs 265/35R20 -9.2%
285/45R20 vs 215/45R20 -8.1%
285/45R20 vs 255/45R20 -3.4%
285/45R20 vs 275/30R20 -11.8%
285/45R20 vs 265/50R20 1.3%
285/45R20 vs 225/35R20 -12.8%
285/45R20 vs 255/35R21 -6.9%
285/45R20 vs 285/30R21 -7.7%
285/45R20 vs 295/30R21 -6.9%
285/45R20 vs 265/35R21 -5.9%
285/45R20 vs 315/30R21 -5.4%
285/45R20 vs 245/40R21 -4.6%
285/45R20 vs 315/35R21 -1.4%
285/45R20 vs 315/40R21 2.7%
285/45R20 vs 325/30R21 -4.6%
285/45R20 vs 305/30R21 -6.2%
285/45R20 vs 355/25R21 -6.9%
285/45R20 vs 245/35R21 -7.7%
285/45R20 vs 255/40R21 -3.5%
285/45R20 vs 275/40R21 -1.4%
285/45R20 vs 275/35R21 -5.1%
285/45R20 vs 275/45R21 2.2%
285/45R20 vs 265/45R21 0.9%
285/45R20 vs 285/35R21 -4.1%
285/45R20 vs 285/45R21 3.3%
285/45R20 vs 295/35R21 -3.3%
285/45R20 vs 275/30R21 -8.5%
285/45R20 vs 295/40R21 0.7%
285/45R20 vs 265/40R21 -2.5%
285/45R20 vs 275/50R21 5.9%
285/45R20 vs 255/50R21 3.3%
285/45R20 vs 285/40R21 -0.4%
285/45R20 vs 295/25R22 -7.5%
285/45R20 vs LT325/50R22 15.7%
285/45R20 vs LT285/50R22 10.5%
285/45R20 vs 305/45R22 9%
285/45R20 vs LT285/55R22 14.1%
285/45R20 vs 255/30R22 -6.7%
285/45R20 vs 275/45R22 5.6%
285/45R20 vs 275/50R22 9.3%
285/45R20 vs 285/30R22 -4.3%
285/45R20 vs 285/35R22 -0.7%
285/45R20 vs 265/40R22 0.9%
285/45R20 vs 285/40R22 3%
285/45R20 vs 285/45R22 6.7%
285/45R20 vs 295/40R22 4.1%
285/45R20 vs 265/35R22 -2.5%
285/45R20 vs 305/40R22 5.1%
285/45R20 vs 275/35R22 -1.7%
285/45R20 vs 295/30R22 -3.5%
285/45R20 vs 315/30R22 -2%
285/45R20 vs 325/35R22 3%
285/45R20 vs 275/40R22 2%

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.