205/90R15 Tires
Understanding 205/90R15 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 205/90R15 tire specs and dimensions, what vehicles come equipped with 205/90R15 tires, what are its replacement options, and where to buy 205/90R15 tires at lowest prices online.
How to read 205/90R15 tire size?
205/90R15 is a Metric tire size that is commonly used on passenger and crossover vehicles. It also comes in a Special Trailer (ST205/90R15) variant.
Let us decode each aspect of 205/90R15 tire size dimensions for better understanding:
- 205 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 205/90R15 tire is 205 millimeters.
- 90 represents the aspect ratio of a tire. It is the ratio of the tire's sidewall height to its width. For 205/90R15 tire, the sidewall height is 90% of its tread width.
- R denotes that tire has radial construction.
- 15 indicates the wheel diameter in inches that the tire is designed to fit. 205/90R15 can be mounted on rims with 15 inches in diameter.
You can learn more about tire size markings on tire sidewall with our comprehensive guide on how to read tire size.
205/90R15 Tire Dimensions
Compare and visualize 205/90R15 tire dimensions in both inches and millimeters. Tire size calculator will help you calculate the dimensions of any tire size.
| Metric | Inches | |
|---|---|---|
| Tire Width | 205 mm | 8.1" |
| Aspect Ratio | 90% | |
| Rim Diameter | 381 mm | 15" |
| Tire Diameter | 751 mm | 29.6" |
| Sidewall Height | 185 mm | 7.3" |
| Circumference | 2358 mm | 92.9" |
| Revolutions | 424 per km | 682 per mile |
205/90R15 Tire Width
How wide is 205/90R15 tire? Tire width is the measurement of the tire's cross-section at its widest point. 205/90R15 tire is 205 millimeters or 8.1 inches wide.
Tires that are 205 millimeters wide come equipped on a variety of crossovers, minivans, passenger cars, pickup trucks, sport utility vehicles and vans.
205 millimeters represents standard tire width. Standard width tires are very versatile, covering the needs of everyday drivers. They offer a balance of traction, fuel or energy efficiency, and handling.
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.
205/90R15 Aspect Ratio
Tire aspect ratio represents the height of the tire's sidewall as a percentage of its width. 205/90R15 tire size has an aspect ratio of 90%.
Tires with an aspect ratio of 90 are known as high-profile tires. Such tires are typically chosen for their comfort and durability, making them well-suited for everyday driving and vehicles that prioritize passenger comfort or require additional load-bearing capacity. Taller sidewall allows for more flex and absorption of road imperfections, translating to a smoother, more comfortable ride.
While these tires provide a comfortable ride, they may not offer the same level of precise handling and cornering performance as lower aspect ratio tires. The increased sidewall height can lead to more flex during aggressive maneuvers, which might not be ideal for high-speed or performance-oriented driving.
205/90R15 Rim Diameter
Rim diameter refers to the diameter of the wheel on which the tire is mounted, commonly measured in inches. 205/90R15 rim size is 15 inches, meaning that tire can be mounted on 15-inch wheels. 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 15 inches are equipped on a select crossover, minivan, passenger car, pickup truck, sport utility vehicle and van models.
Rims with a 15-inch diameter are common on mid-size and full-size sedans, as well as some crossovers and SUVs. They offer a balance between ride comfort, handling, and aesthetic appeal.
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.
205/90R15 Tire Diameter
How tall is 205/90R15 tire? Tire diameter represens the total height of a tire, including the rim, when it is fully inflated and not under load. 205/90R15 diameter is 751 millimeters or 29.6 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.
205/90R15 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. 205/90R15 tire sidewall is 185 millimeters or 7.3 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 7.3" are considered high profile. Higher sidewall offers better ride comfort and is more forgiving on rough surfaces. These characteristics are desirable in off-road, utility vehicles, and everyday passenger cars, as the increased sidewall height provides better shock absorption and protection against potholes and other road imperfections
205/90R15 Circumference
Tire circumference is the total distance around the outer edge of the tire. 205/90R15 tire has a circumference of 2358 millimeters or 92.9 inches.
Tires with a circumference of 92.9 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.
205/90R15 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. 205/90R15 tire makes 424 revolutions per kilometer or 682 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 205/90R15 tire models
No tire models are available in 205/90R15 tire size, but some are available in similar variant.
- Power King HD Radial Trailer II ST205/90R15 from $105.99
Shop more ST205/90R15 tires with tire finder.
What is ST205/90R15 in inches?
When converted to inches, ST205/90R15 tire size is equivalent to 29.6x8.1R15. 29.6 inches indicate the tire diameter, 8.1 inches represent tread width, and 15 inches is the diameter of a rim the tire can be mounted on.
Conversion of ST205/90R15 to inches involves a series of steps that translate the metric measurements of tire width, aspect ratio, and rim diameter into their inch equivalents. This conversion is crucial for understanding tire sizes in a format that may be more intuitive or necessary for specific applications, allowing for better informed decisions regarding tire selection and compatibility.
First, the width of the tire (205 mm) is converted to inches by dividing by 25.4 (since there are 25.4 millimeters in an inch). Secondly, to determine the sidewall height in inches, calculate the height of the tire's sidewall as a percentage of its width (the aspect ratio), then convert this measurement from millimeters to inches. In the case of a ST205/90R15 tire, the sidewall height is 90% of 205 mm, which converts to approximately 7.3 inches. Lastly, to ascertain the overall diameter of the tire, sum twice the sidewall height with the diameter of the rim (already in inches). Therefore, for a ST205/90R15 tire, the overall diameter is the sum of twice the sidewall height (7.3 x 2) plus the rim diameter (15 inches), culminating in an overall diameter of about 29.6 inches.
ST205/90R15 Vehicle Fitment
No vehicles that are equipped with ST205/90R15 OEM tire size have been found in our database.
What are replacement sizes for ST205/90R15 tire?
ST205/90R15 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 ST205/90R15 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 |
|---|---|
| 205R16 | -1.2% |
| LT215/85R16 | 2.8% |
| LT205R16 | -1.1% |
ST205/90R15 Tire Size Comparison Chart
Below is a comparison chart where we compare ST205/90R15 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 |
|---|---|
| ST205/90R15 vs P205/65R15 | -13.8% |
| ST205/90R15 vs 235/70R15 | -5.3% |
| ST205/90R15 vs 215/60R15 | -14.9% |
| ST205/90R15 vs P275/60R15 | -5.3% |
| ST205/90R15 vs 225/50R15 | -19.2% |
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.