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Tire Size Calculator
| Tire Height (Diameter) | 0 in / 0 mm |
| Wheel Size | 0 in / 0 mm |
| Sidewall Height | 0 in / 0 mm |
| Tire Width | 0 in / 0 mm |
| Tire Circumference | 0 in / 0 mm |
| Revolutions per Mile | 0 |
| Revolutions per Kilometer | 0 |
Understanding Tire Sizes
Tire sizes are represented by a code that contains three main numbers:
Width
The first number represents the tire's width in millimeters from sidewall to sidewall.
Aspect Ratio
The second number is the aspect ratio, representing the tire's height as a percentage of its width.
Wheel Diameter
The last number indicates the wheel diameter in inches.
Example
A tire size of 265/70R17 means: 265mm wide, 70% aspect ratio, fits 17-inch wheel.
The Ultimate Tire Resource
Contact Patch Area Calculator
Calculate the tire contact patch area for improved traction
Fleet Management ROI Calculator
Compare tire options for longevity and fuel savings
Fuel Efficiency Impact Calculator
Calculate how tire choices affect your fuel consumption
Gear Ratio Adjuster
Maintain performance after changing tire size (for 4×4/off-road)
Ground Clearance Calculator
Calculate vehicle ground clearance with different tire sizes
Hydroplaning Risk Calculator
Assess the risk of hydroplaning based on tire and road conditions
Lift/Leveling Kit Calculator
Calculate the right lift for your vehicle and tire combination
Load Index/Speed Rating Decoder
Decode tire load index and speed rating information
OEM Tire Size Lookup
Find the original tire size specifications for your vehicle
Revolutions Per Mile Calculator
Calculate revolutions per mile for any tire size
Seasonal Tire Storage Cost Estimator
Calculate storage fees for summer/winter tires
Speedometer Error Calculator
Calculate the actual speed based on tire size changes
Tire Age Decoder
Determine the manufacturing date of your tires
Tire Clearance Simulator
Simulate tire clearance with different wheel and tire combinations
Tire Cost Per Mile Calculator
Calculate the true cost per mile of different tire options
Tire Diameter Calculator
Calculate the overall diameter of your tires
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