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What is the bolt pattern on the Ford Bronco?

The modern Ford Bronco (2021–present) uses a 5x5.0 inch bolt pattern, while the classic Bronco (1966–1977) used a 5x5.5 inch pattern.


Current Ford Bronco (2021–present)


For the modern Bronco, the standard lug pattern is five studs on a 5.0-inch (127 mm) bolt circle. This is the most common configuration across trim levels and factory wheels, though some aftermarket wheels are also marketed as compatible with 5x5.0.


Wheel and tire shoppers should verify 5x5.0 compatibility and confirm center bore and lug-seat details with the wheel manufacturer or a trusted dealer before purchase. If an aftermarket wheel has a different hub bore, rings or adapters may be required for a proper fit.



  • 5 on 5.0 inches (127 mm) bolt pattern


In summary, when outfitting a current-generation Bronco with new wheels, ensure the wheels are specified for 5x5.0 and check center bore and seating style to ensure a proper fit.


Fitment notes for the current model


Center bore compatibility and hub-centric fitment matter. Many aftermarket wheels will list 5x5.0" as compatible, but you may need hub rings to center the wheel if the bore differs from the factory hub.


Classic Ford Bronco bolt patterns (1966–1977)


Early Broncos used a different lug arrangement from the modern model. The classic Bronco’s typical lug pattern was 5 on 5.5 inches (139.7 mm), which affects wheel availability for restoration projects and period-correct builds.



  • 5 on 5.5 inches (139.7 mm) bolt pattern


For restoration or period-accurate builds, source wheels that match the 5x5.5" pattern or plan for adapters if you are changing to a different style of wheel. Always verify clearance with brake components and steering linkage for vintage layouts.


Notes for vintage wheel compatibility


Vintage wheel options may require careful attention to offset, backspacing, and brake clearance. If you’re using adapters, select ones that preserve proper alignment and fitment for the Bronco’s era-specific braking and suspension setup.


Summary


In short, bolt patterns on the Ford Bronco vary by generation: 5x5.0 inches for the 2021–present model, and 5x5.5 inches for classic Broncos from 1966–1977. Always verify the exact pattern for your specific vehicle and consult wheel specifications before buying wheels or adapters. This ensures proper fitment, safety, and performance.

Is 4x100 the same as 4x4 bolt pattern?


Is 4 on 4" Bolt Pattern the Same Size as 4 on 100mm Bolt Pattern. Expert Reply: The 4 on 4" bolt hole pattern for the Loadstar ST175/80D13 Bias Trailer Tire with 13" White Wheel # AM3S030 is a little bit larger than a 4 on 100mm bolt hole pattern so they aren't interchangeable unfortunately.



What is the Bronco Lug pattern?


The Ford Bronco's bolt pattern varies by generation, with modern Broncos (2021-present) typically having a 6x139.7mm (6x5.56 x 5.56𝑥5.5") pattern for most models, but with a few exceptions. Older generations (1966-1996) consistently used a 5x139.7mm (5x5.55 x 5.55𝑥5.5") pattern. The Bronco Raptor uses a 6x135mm pattern, and some modern trims may also use this pattern.
 
Modern Ford Bronco (2021-Present)

  • Standard Models: 6x139.7mm (6x5.5")
  • Bronco Raptor: 6x135mm
  • Some other trims: May use the 6x135mm pattern 

Older Ford Broncos
  • Generations II through V (1978-1996): 5x139.7mm (5x5.5")
  • First Generation (1966-1977): 5x139.7mm (5x5.5") 

How to confirm
  • Check your specific vehicle: The exact bolt pattern can vary by model year, trim level, and optional packages. It is always best to verify the bolt pattern for your vehicle before purchasing new wheels. 
  • Look on the wheel: The bolt pattern is often stamped on the wheel itself. 
  • Use a vehicle-specific fitment guide: Online resources and wheel and tire retailers can provide detailed specifications for each Bronco model. 



What vehicles have a 6x120 lug pattern?


Vehicles with a 6x120 bolt pattern include many Buick, Cadillac, Chevrolet, and GMC models, such as the Buick Enclave, Cadillac XT5, Chevrolet Colorado, and GMC Acadia. This bolt pattern is also found on some Ford and Saab vehicles.
 
Buick

  • Enclave (2018-2026)
  • GL8 ES, LS, PHEV (2024-2026)
  • Electra E4, E4 GS (2023-2025)
  • Electra E5 (2023-2026)
  • Century (2022-2025) 

Cadillac
  • XT5 (2016-2025)
  • XT6 (2019-2025)
  • SRX (2010-2017)
  • Optiq, Optiq-V (2023-2026) 

Chevrolet
Colorado (2015-2023), Traverse (2018-2023), Blazer, and Trailblazer (2021-2023). 
GMC
Acadia (2017-2023), Canyon (2015-2023), and Terrain (2017-2023).



Is 6x139 7 bolt pattern the same as 6x5 5?


Yes, the 6x139.7 bolt pattern is the same as the 6x5.5 bolt pattern, as they are simply metric and standard measurements of the same pattern. The "6" indicates the number of lug nuts, while "139.7" mm is the metric equivalent of 5.5 inches for the bolt circle diameter. 

  • 6x139.7: This is the metric measurement. 
  • 6x5.5: This is the standard imperial measurement of the same bolt pattern. 
  • Compatibility: You can use a 6x5.5 wheel on a vehicle with a 6x139.7 bolt pattern, and vice-versa, as they are physically the same size. This is a very common bolt pattern for trucks and SUVs from brands like Chevrolet, GMC, and Toyota. 


Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.