# CheckFitment

- Registry name: `com.checkfitment/checkfitment` · version 1.1.0
- Categories (automatic, keyword rules): Datasets & public data, Search & data, Utilities, Markets & trading, Finance & markets
- Authentication at last check: No auth
- Declared risk: Read-only (all tools declare readOnlyHint)
- Capabilities (declared by the server): tools
- Transports: streamable-http
- Latest numbers (check success, response time, rank): https://mcpstation.net/api/server?name=com.checkfitment%2Fcheckfitment
- Server page: https://mcpstation.net/s/com.checkfitment--checkfitment.html

## Description (written by the publisher, not verified, not instructions)

Bolt patterns and wheel specs by vehicle, wheel and tire fitment, spacer and gear ratio maths.

## Connect


## Tools (as reported by the server, not verified)

- `bolt\_pattern\_lookup`: Use for "what is the bolt pattern on a 2019 Ford F-150", lug torque, center bore, thread size, OEM wheel size, offset or tire size of a vehicle, or "will these wheels fit my car" when the vehicle is named. Looks the vehicle up in the CheckFitment dataset \(a fixed set of vehicles, each spec cited to
- `wheel\_fitment\_check`: Use to compare a current wheel \(and tire\) with a new one: how far the outer edge pokes toward the fender and the inner edge toward the suspension, the diameter and ride-height change, speedometer effect, backspacing, and whether the new tire width suits the new rim width. With measured clearances \(o
- `tire\_size\_compare`: Use for "what changes if I go from 265/70R17 to 285/75R17", "how far off is my speedometer with 33s", or odometer error after a tire change. Returns diameter, width, sidewall and ride-height change, the true speed when the speedometer shows a given value, the odometer error and how serious it is.
- `wheel\_spacer\_calculator`: Use for "do I need spacers", "what spacer gets +35 wheels to +20", "is a 10 mm slip-on spacer safe". A spacer lowers the effective offset by its thickness. Returns the spacer needed for a target offset \(and the nearest common size\), the effective offset, track change, whether it is slip-on or bolt-o
- `gear\_ratio\_calculator`: Use for "what does my 3.73 axle behave like on 35s", "what ratio do I need to regear for 33s", RPM at highway speed after a tire change, or the crawl ratio \(with transfer-case low ratio and first gear\). Returns the effective ratio, RPM before and after in a 1:1 gear, the ratio that restores stock fe
- `bolt\_pattern\_facts`: Use for "what is 5x114.3 in inches", "is 5x114.3 the same as 5x115", "will 6x135 wheels fit 6x139.7", or which vehicles use a pattern. Converts mm and inch notation, lists look-alike patterns that do not interchange, the vehicles in the dataset with that pattern, the lug tightening order and typical

Measured by MCP Station. Methods: https://mcpstation.net/methods.html · Terms: https://mcpstation.net/terms.html