The right way to identify a 6-lug trailer bolt pattern is to measure its bolt-circle diameter, not count the studs alone. These five measuring tools cover six-lug patterns alongside other common configurations. The AOQIVIS gauge is best for quick, multi-pattern checks; the eaacaa four-piece set offers dedicated templates; and the Rifatrio tool is a portable option. Confirm the measurement and units before ordering a wheel, since six-lug wheels can have different bolt-circle diameters.
| Tool | Best For | Notable Feature |
|---|---|---|
| AOQIVIS 2-Pack Gauge | Quick checks across several lug counts | Five listed bolt-circle scales |
| eaacaa Four-Piece Set | Dedicated 4-, 5-, and 6-lug templates | SAE and metric scales |
| Rifatrio Template Set | Portable general-purpose measuring | 4-, 5-, and 6-lug coverage |
| FSQLB 2-Pack Tool | Basic multi-pattern measuring | Two tools for 4-, 5-, 6-, and 8-lug rims |
| eaacaa Sliding Gauge | Fast template-based identification | Align, slide, and read operation |
AOQIVIS 2-Pack Measuring Tool
This two-pack is best for trailer owners who want a quick check across several lug configurations. Its listed scales cover 4-1/4, 4-1/2, 4-3/4, 5, and 5-1/2 inches. The product description says it can be used with 4-, 5-, 6-, and 8-lug rims, with the measurement taken between opposite bolts for those configurations.
Choose this gauge if you want a direct readout rather than calculating the bolt circle yourself. It is selected for its stated range and multi-pattern use. However, its listed scale values are limited; if your measurement does not match one of them, verify the pattern with a suitable measuring method before buying a wheel.
eaacaa Four-Piece Template Set
This set is best for DIY users who want dedicated guides for 4-, 5-, and 6-lug patterns. The listed features include four measuring tools, SAE and metric scales, and templates intended to identify pitch circle diameter (PCD). The multiple templates can make comparisons more straightforward when checking different wheels or trailer hubs.
It was selected because it explicitly includes six-lug coverage and dual measurement units. The product description does not list the exact ranges printed on every guide, so check that the available markings can resolve your measured pattern before relying on it for an uncommon size.
Rifatrio 4-, 5-, And 6-Lug Template
The Rifatrio tool is best for buyers seeking a lightweight template for several common wheel patterns. Its listed features cover 4-, 5-, and 6-lug configurations and describe clear markings for measuring bolt-circle diameter and lug spacing. The product is described as made from high-strength ABS plastic and easy to carry in a toolbox or glove compartment.
It earns a place here because it specifically names six-lug vehicles and trailers among its intended uses. Choose it if portability and multi-pattern coverage matter. The listing does not provide specific measurement increments or a full range, so confirm that its markings suit the size you need to identify.
FSQLB Two-Piece Pattern Tool
This two-piece tool is best for buyers who want a basic measuring option for more than one lug count. The product description identifies it as a wheel bolt pattern and trailer axle bolt circle template for 4-, 5-, 6-, and 8-hole rims. Its two-piece format may be useful when keeping a spare guide available.
It was selected because the listing directly includes six-lug trailer and wheel measurement. The provided product information does not specify scale values, material, or a measurement procedure. Avoid assuming it will identify every six-lug size; check the actual markings and confirm the result before purchasing a replacement wheel.
eaacaa Sliding Bolt Pattern Gauge
This gauge is best for users who prefer a guided, read-off measurement. Its listed scales are 4-1/4, 4-1/2, 4-3/4, 5, and 5-1/2 inches. The manufacturer describes a three-step process—align, slide, and read—and says the tool is intended for 5-, 6-, and 8-hole rims.
It was selected for its stated range and simple operating sequence. The scale list does not cover every possible bolt-circle diameter, so this tool may not give a direct match for an uncommon pattern. Compare the actual measurement with the wheel or hub specification when the result falls between markings.
Buying Guide: How To Identify A 6-Lug Trailer Pattern
What does a 6-lug bolt pattern mean?
A six-lug pattern has six wheel studs or bolt holes arranged around a circle. The pattern is written as six holes followed by the bolt-circle diameter, such as 6 on 5.5 inches. The number of lugs does not identify the diameter, so a six-lug wheel is not automatically a match for a six-lug trailer hub.
How do you measure a six-lug bolt circle?
For a six-lug wheel or hub, measure from the center of one stud to the center of the stud directly opposite it. That distance is the bolt-circle diameter. If using a template, align it carefully with the holes and follow its instructions. Check whether the tool reads inches, millimeters, or both.
What else should you verify before buying a wheel?
Confirm the measured bolt pattern against the trailer hub or wheel specification. Also check other fitment details required for your setup, such as wheel diameter, width, and offset, rather than relying on the bolt pattern alone. If the measurement is unclear, recheck it or consult a trailer parts professional before ordering.
Frequently Asked Questions
Are all 6-lug trailer bolt patterns the same?
No. Six lugs describe the number of holes, not the bolt-circle diameter. Measure the distance between opposite stud centers to determine the pattern.
Is 6 on 5.5 inches the only six-lug trailer pattern?
No. It is one possible pattern, but the supplied product information does not establish that it fits every trailer. Measure your hub and verify the specification.
Can I measure a six-lug pattern from adjacent studs?
The tools described here specify measuring between two studs directly across from one another for a six-lug pattern. Measuring adjacent studs does not provide that direct bolt-circle diameter.
Should I use inches or millimeters?
Use the same unit as the wheel or hub specification when comparing results. If converting units, verify the conversion and avoid rounding enough to confuse nearby patterns.