Expert tire knowledge driving you safely on every road ahead.

Your trusted guide to safer journeys, one tire at time.

Tire Size Calculator

Tire Size: / R

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

Featured Posts

Tire Maintenance & Care

Does Weather Cause Changes in Tire Pressure? The Impact of Temperature Variations

Weather changes affect tire pressure. Cooler air causes temperature fluctuations, decreasing air volume and lowering tire pressure. In contrast, warmer weather increases air volume, raising tire pressure…..

Ahnaf Tahmid

Tire Pressure & Inflation

Air Hawk Automatic Tire Inflator: How Much Pressure It Delivers – Review & Test

The Air Hawk automatic tire inflator can inflate tires to a maximum pressure of 35 psi. In real-world tests, it quickly filled a flattened Honda tire to this pressure. Its strong performance highlights its ease…

Ahnaf Tahmid

Tire Safety & Emergency Tools

Can Bad Brakes Cause Tire Wear? Explore Brake Issues and Preventative Tips

A faulty brake caliper can cause excessive drag, which leads to increased tire wear. Symptoms of this issue include uneven tire wear, pulling to one side, strange noises, a burning smell, and worn brake pads…..

Ahnaf Tahmid

Blog

Does Discount Tire Sell Aged Tires? Explore Their Used Tire and Trade-In Policies

Discount Tire does not sell aged tires. Some locations offer barely used tires, including Original Equipment (OE) tires that were replaced shortly after purchase, as well as like-new tires from customer returns….

Ahnaf Tahmid

Tire Types & Uses

Will Valvoline Put on Winter Tires? Essential Tips for Tire Change and Maintenance

Valvoline installs winter tires to enhance vehicle safety. Their expert technicians assess your needs and recommend suitable options. They provide qualified service, including tire swaps and rotations. Trust Valvoline for seasonal…

Ahnaf Tahmid

Tire Replacement & Repair

Will a Full Size Wheel and Tire Fit a 2001 Ranger Spare? Essential Fitment Insights

Yes, a full-size wheel and tire can fit a 2001 Ford Ranger spare. Verify that the tire size is compatible, with a bolt pattern of 4×100 and a center hole bore size of 56.1 mm. Keep in mind that the rear frame dimensions…

Ahnaf Tahmid