Fitment Industries Calculators: Dial In The Measurements For Your Truck Build
Watch Our How-To Video
Watch our how-to video, so you can better understand the basics of wheel fitment.
We've been in the game long enough to know that math is hard, and figuring out your wheel and tire fitment can be very annoying if you can't figure out the measurements. So, we put together the following calculators and converters to help you set your fitment journey on the right path.
Take a look below at each of the calculators we offer at Fitment Industries and click into whichever one you need.
Offset & Backspacing Calculator
Find Your Wheel Position
Offset and backspacing both determine where your wheel sits relative to your suspension and fenders. This calculator converts between the two so you can understand exactly how your wheel specs affect fitment.
Perfect for dialing in flush fitment, aggressive stance, or safe suspension clearance.
Wheel & Tire Clearance Calculator
Compare Your Current Setup vs. Your New One
Thinking about wider wheels or bigger tires? This calculator compares your current wheel and tire specs with a new setup and shows the exact differences in inner clearance, outer position, and overall tire diameter.
It’s the easiest way to see how a spec change will affect your fitment before you buy.
Tire Size Comparison Tool
See the Real Difference Between Tire Sizes
Not all tire sizes are as similar as they look. This tool breaks down tire width, sidewall height, and overall diameter so you can compare sizes and understand how a new tire will affect clearance, ride height, and speedometer accuracy.
Perfect for planning larger tire upgrades or matching tire sizes across different wheel diameters.
Metric to Imperial Tire Converter
Convert Tire Measurements Instantly
Tire specs often mix metric and imperial measurements. This converter makes it easy to translate between the two so you can compare tire sizes and measurements without doing the math yourself.
A quick way to keep your specs straight when researching new setups.
Bolt Pattern Converter
Make Sure Your Wheels Will Bolt On
Before you buy new wheels, you need to confirm the bolt pattern matches your vehicle. This tool helps you calculate and convert lug patterns so you can verify compatibility and avoid ordering wheels that won’t mount.
A quick check that can save you a major headache.