How to check tire fitment
Practical tire fitment checks: overall diameter, rim width compatibility, offset basics, clearance at steering lock, and why online calculators are only step one.
Fitment is more than diameter math
Online tools excel at labeled geometry. Fitment also includes wheel offset, suspension travel, brake hardware, and even winter chain clearance if you use chains.
A simple at-home sanity pass
Inspect closest gaps at full steering lock with the vehicle loaded normally. Look for prior rub marks on inner fenders. If you are close on paper, assume you are closer in reality.
Ratings matter
Match or exceed placard load and speed requirements for your intended speeds and loads (including towing).
Frequently asked questions
Can I trust forums for fitment?
Try the free tire size calculator
Open the interactive tire size calculator to compare diameters, see a wheel size comparison side by side, and review a speedometer difference table before you buy tires or wheels. It works like a quick tire fitment checker for geometry—not a substitute for a professional install bay.