CheckFitment
ChatGPT pluginBolt pattern and wheel fitment
Will these wheels and tires fit your vehicle? CheckFitment answers with numbers, not guesses. Ask for a vehicle's bolt pattern, center bore, thread size, lug torque and factory wheel, offset and tire sizes: every figure comes from the site's dataset, where each specification is cited to manufacturer documents and marked verified or openly unverified. If your vehicle is not in the dataset, the app says so instead of inventing a spec. Compare your current wheels and tires with a new set to see how far the outer edge moves toward the fender and the inner edge toward the suspension, the diameter and ride-height change, the speedometer effect, and, with your measured clearances, a fits / tight / rub verdict. Check what a tire size change does to diameter, speedometer and odometer; which spacer reaches a target offset and whether a slip-on still leaves enough stud thread; what your axle ratio behaves like on bigger tires and which gear set restores stock feel; and what 5x114.3 is in inches, which look-alike patterns do not interchange, and which vehicles use it. Reference only: confirm every figure against your vehicle's documentation and door-jamb placard, torque to the manufacturer's figure, and have fitment checked by a qualified shop before driving. Free, no account, no prices, no shopping links; the app asks for no names, VINs or plates and stores nothing.
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Example prompts
- “What's the bolt pattern and lug torque on a 2019 Ford F-150?”
- “Will 285/70R17 on 9-inch +18 wheels fit my Tacoma that has 265/70R17 on 7.5-inch +30?”
- “Do I need spacers to get +35 offset wheels to +20, and is a slip-on safe?”
- Categories
- Made by
- Rainer Lang · Website
- Sign-in
- On Install
- Capabilities
- Look up a vehicle's bolt pattern, center bore, thread, lug torque and OEM wheel, offset and tire sizes with sources, Compare current and new wheels and tires: poke, inner clearance, diameter, speedometer, fits / tight / rub, Tire size, speedometer and odometer change; spacer size with the stud-engagement check; gear ratio and regear, Convert bolt patterns mm and inches, warn about look-alikes that do not interchange, link the page on checkfitment.com
- Availability
- Available
- Version
- 1.0.0
- Keywords
- bolt pattern, wheel fitment, wheel offset, lug nut torque, wheel spacers, tire size calculator, gear ratio
- Created
- October 10, 2026
- More info
- Sponsorship
- Promote this plugin