What is the bolt pattern on a Model A wheel?
The standard bolt pattern on a Ford Model A wheel is five lugs on a 4.5-inch circle, written as 5x4.5 inches (114.3 mm).
For restorations and aftermarket parts, this pattern is the most common reference. Verify the exact hub bore and wheel compatibility for your vehicle, since some reproductions or adapters may present variations.
Understanding the Model A bolt pattern
Before listing the specifics, it helps to know what “bolt pattern” means: it is the arrangement and number of lug holes on the wheel that line up with the vehicle’s hub. For the Model A, the standard configuration is five lugs arranged around a circle with a 4.5-inch diameter.
- Pattern: 5 lug holes on a 4.5-inch bolt circle (5x4.5 in, 114.3 mm)
- Commonly used on original Model A-era wheels and many period-correct restorations
With this information, you can identify wheels that will bolt up to a Model A hub without adapters, provided other fit factors (like center bore and offset) are also compatible.
How to verify the bolt pattern on your wheel or hub
The following steps help confirm the pattern before mounting wheels or buying adapters.
- Measure the distance between opposite lug holes through the center of the hub to confirm it is 4.5 inches (114.3 mm)
- Count the number of lug holes; there should be five
- Ensure the hub bore and offset match what your Model A requires; even with a 5x4.5 pattern, other dimensions can affect fit
These checks reduce the risk of mounting incompatibilities and help ensure proper seating and safety.
Variations and practical considerations
While 5x4.5 inches is the standard for most Model A wheels, some aftermarket reproductions or conversions may use different patterns or require adapters. Always verify the exact specification from the wheel manufacturer or vendor, especially if you are mixing original parts with modern replacements.
- Original-era wheels almost universally use 5x4.5 inches
- Aftermarket or reproduction wheels may present alternative bolt patterns or require adapters
When in doubt, consult the wheel documentation or measure directly to avoid incompatibilities that could affect safety and performance.
Summary
The Model A wheel standard bolt pattern is five lug holes on a 4.5-inch circle (5x4.5 in / 114.3 mm). Confirm pattern with precise measurements or manufacturer specs, especially when sourcing aftermarket wheels or adapters.
What cars have 4x100 wheels?
Many cars have 4x100 wheels, especially older and compact models from brands like Honda (Civic, Prelude, CRX), Toyota (Corolla, Yaris, Celica), and Mazda (Protege, 323). Other popular examples include various Volkswagen Golf and Polo models, Chevrolet Spark and Aveo, and some BMW E30 models.
Honda
- Civic (many generations)
- Prelude (1982-1991)
- CRX
- Del Sol
- Accord (1982-1989)
- Fit
- Insight
- City
Toyota
- Corolla (many generations)
- Yaris
- Celica (1986-1991)
- MR2 (1986-1990)
- Paseo
- Tercel
- Echo
- Aygo
Volkswagen
Golf (older models), Polo (older models), and up.
Other Brands
- Mazda: Protege, 323, MX3
- Nissan: Sentra, Micra, Note, Pulsar
- Subaru: Justy
- Suzuki: Swift, Esteem
- BMW: E30 models
- Chevrolet: Spark, Aveo
- Kia: Sephia
- Mitsubishi: Mirage
- Dacia: Various models
- Fiat: Grande Punto
What is the bolt pattern on a Ford Model A?
A Ford Model A has a 5 on 5.5-inch bolt pattern, meaning there are five lug bolts spaced on a 5.5-inch diameter circle. This is the correct bolt pattern for all Model A wheels, from 1928 to 1931, whether they are the original 21-inch or 19-inch diameters.
This video explains how to measure a bolt pattern on a Model A wheel: 55sHot Rod DadYouTube · Oct 16, 2023
Key details
You can watch this video to learn how to measure a bolt pattern: 1mCurrie EnterprisesYouTube · Jul 14, 2020
- Bolt pattern: 5 lugs on a 5.5-inch bolt circle.
- Identification: This is the easiest way to distinguish a Model A wheel from a Model T wheel, which has a 5 on 5-inch bolt circle.
- Wheel diameter: The bolt pattern is the same for both 21-inch wheels (1928–29) and 19-inch wheels (1930–31), though the wheels themselves are different sizes.
- Interchangeability: Other wheels with a 5 on 5.5-inch bolt pattern may fit, such as wheels from older Ford trucks or certain Jeep models.
Are Mustangs 5x114?
Starting with this generation and running forward to every Mustang after, the SN95 Mustang also used the now-familiar 5x114. 3 mm bolt pattern.
What is the bolt pattern on a 1931 Model A?
Wheel Bolt Pattern (in.): 5x5 in.
