T185/55D18 Tires
Understanding T185/55D18 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 T185/55D18 tire specs and dimensions, what vehicles come equipped with T185/55D18 tires, what are its replacement options, and where to buy T185/55D18 tires at lowest prices online.
How to read T185/55D18 tire size?
T185/55D18 is a Temporary Spare tire size that is used as a temporary solution intended for emergency use only. It also comes in a Metric (185/55R18) variant.
Let us decode each aspect of T185/55D18 tire size dimensions for better understanding:
- T indicates it is a temporary spare tire.
- 185 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 T185/55D18 tire is 185 millimeters.
- 55 represents the aspect ratio of a tire. It is the ratio of the tire's sidewall height to its width. For T185/55D18 tire, the sidewall height is 55% of its tread width.
- D denotes that tire has diagonal bias construction.
- 18 indicates the wheel diameter in inches that the tire is designed to fit. T185/55D18 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.
T185/55D18 Tire Dimensions
Compare and visualize T185/55D18 tire dimensions in both inches and millimeters. Tire size calculator will help you calculate the dimensions of any tire size.
| Metric | Inches | |
|---|---|---|
| Tire Width | 185 mm | 7.3" |
| Aspect Ratio | 55% | |
| Rim Diameter | 457 mm | 18" |
| Tire Diameter | 661 mm | 26" |
| Sidewall Height | 102 mm | 4" |
| Circumference | 2076 mm | 81.6" |
| Revolutions | 482 per km | 776 per mile |
T185/55D18 Tire Width
How wide is T185/55D18 tire? Tire width is the measurement of the tire's cross-section at its widest point. T185/55D18 tire is 185 millimeters or 7.3 inches wide.
185 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.
T185/55D18 Aspect Ratio
Tire aspect ratio represents the height of the tire's sidewall as a percentage of its width. T185/55D18 tire size has an aspect ratio of 55%.
Tires with an aspect ratio of 55 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.
T185/55D18 Rim Diameter
Rim diameter refers to the diameter of the wheel on which the tire is mounted, commonly measured in inches. T185/55D18 rim size is 18 inches, meaning that tire can be mounted on 18-inch wheels. Rim diameter directly correlates with the overall diameter of the tire and affects various aspects of vehicle performance and aesthetics.
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.
T185/55D18 Tire Diameter
How tall is T185/55D18 tire? Tire diameter represens the total height of a tire, including the rim, when it is fully inflated and not under load. T185/55D18 diameter is 661 millimeters or 26 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.
T185/55D18 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. T185/55D18 tire sidewall is 102 millimeters or 4 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 4" are considered low profile. Lower sidewall height, commonly seen in performance tires, generally enhances handling and steering response by reducing flex and deformation under stress. This results in a firmer ride quality and increased stability at higher speeds, making them suitable for sports and performance vehicles.
T185/55D18 Circumference
Tire circumference is the total distance around the outer edge of the tire. T185/55D18 tire has a circumference of 2076 millimeters or 81.6 inches.
Tires with a circumference of 81.6 inches are common on mid-size cars, minivans and SUVs. These tires strike a balance between fuel efficiency and comfort, offering a smoother ride than smaller tires while maintaining reasonable handling and efficiency.
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.
T185/55D18 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. T185/55D18 tire makes 482 revolutions per kilometer or 776 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.
What is T185/55D18 in inches?
When converted to inches, T185/55D18 tire size is equivalent to 26x7.3R18. 26 inches indicate the tire diameter, 7.3 inches represent tread width, and 18 inches is the diameter of a rim the tire can be mounted on.
Conversion of T185/55D18 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 (185 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 T185/55D18 tire, the sidewall height is 55% of 185 mm, which converts to approximately 4 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 T185/55D18 tire, the overall diameter is the sum of twice the sidewall height (4 x 2) plus the rim diameter (18 inches), culminating in an overall diameter of about 26 inches.
T185/55D18 Vehicle Fitment
No vehicles that are equipped with T185/55D18 OEM tire size have been found in our database.
What are replacement sizes for T185/55D18 tire?
T185/55D18 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 T185/55D18 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 |
|---|---|
| 195/50R19 | 2.7% |
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.