The family toolbox.
The same calculators enthusiasts run millions of times a year on Fitment Industries — one family, one login, one set of tools. Do the math before you make an offer.
Measure twice, offer once.
Wheel Offset
Compare your current setup to a listing — see exactly how much closer to (or farther from) the fender the new wheels sit.
Open CalculatorTire Size
Diameter, sidewall, and speedometer change between the listed tire size and yours — before you buy a mounted set.
Open CalculatorBolt Pattern
Measure a pattern off the wheel in your hands — or check what your chassis runs before you fall in love with a listing.
Open CalculatorGallery Clearance
See real photos of your exact wheel and tire combo on your chassis — the 180K-build gallery answers what math can't.
Open CalculatorMetric ⇄ Inch
Lug sizes, bore diameters, and lip measurements come in both flavors — convert without leaving the tab.
Open CalculatorOr skip the math
Set your vehicle once and the Exchange only shows gear the fitment engine says works — with gallery proof where it exists.
How Fitment WorksCalculators open in the Fitment Industries toolset — same family, same login, back button brings you home.
Wheels
Wheel + Tire Sets
Tires 
Suspension
Performance
Aero + Body
Interior
Deals