Observed arrival · 2026-09-16
CheckFitment, the Wheel-Clearance Desk
A free collection of wheel and tire fitment calculators, converters, measurement guides, and vehicle-specific specifications.
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Field notes
The site groups wheel-fitment questions by geometry and vehicle data rather than presenting a single lookup form. Its toolbox covers conversions, offset and backspacing comparisons, clearance judgments, center-bore matching, spacer calculations, and lug-nut torque. The vehicle index supplies bolt-pattern and bore figures across model-year ranges, including examples such as the Ford F-150 at 6x135 with an 87.1 bore and the Toyota 4Runner at 6x139.7 with a 106.1 bore.
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