When planning a move, hauling equipment, or transporting a project load, understanding how wide are car trailers is essential for safe and efficient travel. The width of a trailer dictates what roads you can use, what garages you can fit into, and how easily you can manage tight parking spots. While the standard legal limit for road use in most regions is eight feet, actual trailer widths vary significantly based on design, purpose, and regional regulations.
Standard Widths for Utility and Car Haulers
For the majority of utility and car hauling trailers, the industry standard width is eight feet. This dimension aligns with the legal limit for highway travel in the United States, Canada, and many other countries, allowing the trailer to be classified as non-exceptional. A standard enclosed car hauler or open utility trailer at this width provides a balance between cargo capacity and accessibility, fitting comfortably under most overpasses and through common vehicle gates without requiring special permits.
Enclosed Trailers vs. Open Trailers
Enclosed car trailers often feature skids or side rails that extend slightly beyond the eight-foot frame, but the actual living space remains standardized to keep the load secure and centered. Open trailers, such as those used for towing vehicles or hauling lumber, typically adhere strictly to the eight-foot width to ensure they can be towed safely in the right lane of traffic. While the body might flare at the top for tire coverage, the core structure maintains a consistent width to simplify towing dynamics.
Regional Regulations and Legal Limits
While eight feet is the norm, specific legal allowances can differ by state or province. Some rural jurisdictions permit trailers up to eight feet and six inches wide with the proper documentation, while urban areas strictly enforce the eight-foot standard to ensure safe passage through traffic and under infrastructure. Always verify local regulations before purchasing or building a trailer to avoid fines or mandatory modifications that could delay your plans.
Measuring Width Correctly
To measure how wide a car trailer is, you must measure from the outer edge of the left wheel to the outer edge of the right wheel at the widest point of the frame or body. Do not include accessories like side mirrors, tire covers, or extended lighting assemblies in this measurement, as these are often variable. For road legality, authorities typically refer to the maximum frame width, ensuring consistency across inspections and registration processes.
Considerations for Towing and Storage
A trailer that is eight feet wide requires a tow vehicle with sufficient mirrors and awareness to manage the blind spots created by the load. Drivers must account for the extra width when navigating highway merges, parking in tight lots, or entering garages. Homeowners with limited driveway space might opt for a slightly narrower design or a two-car layout that maximizes length rather than width to fit property constraints.
