Truck & SUV Bolt Patterns: 6x139.7, 5x114.3 & More

A bolt pattern is written as two numbers — the lug count and the bolt circle diameter — like 6x139.7. That means six lugs arranged on a 139.7 mm (5.5-inch) circle. On even-lug wheels you measure center to center across two opposing studs; on 5-lug wheels you measure from one stud's center to the far edge of the hole two positions over. The pattern has to match your hub exactly — there is no "close enough."

How to Read the Numbers (6x139.7, 5x114.3, and the Rest)

Every bolt pattern is the same two-part code: how many lugs, and how big the circle those lugs sit on. The first number is a simple count. The second is the bolt circle diameter — the diameter of the imaginary circle that runs through the center of every stud — given in millimeters, sometimes with the inch equivalent in parentheses.

So 6x139.7 is six lugs on a 5.5-inch circle, and 5x114.3 is five lugs on a 4.5-inch circle. The count is easy to eyeball; the circle is where mistakes happen, because a difference of a few millimeters looks identical at a glance but will not bolt up. Shoppers reach us with search terms as plain as "six lug" cast on their old wheel, and the lug count alone is never enough to order by — 6x135 and 6x139.7 are both "six lug," and they are not interchangeable.

Which Trucks and SUVs Run Which Pattern

Below are the patterns this guide covers and the families they most often appear on. Treat it as a starting point, not a purchase order: the same nameplate can change bolt patterns across years, trims, and half-ton versus heavy-duty versions, so always confirm against your specific truck before you buy.

The 8-lug row is where buyers get burned most often. Heavy-duty three-quarter- and one-ton trucks all look similar, but newer GM 2500/3500 HD trucks switched to 8x180 and Ford Super Duty uses 8x170 — both easy to confuse with 8x165.1, and none of the three interchange. There is also a 6x135 (6x5.31-inch) pattern on many Ford F-150 and Expedition models that sits right next to 6x139.7. When the numbers are that close, verify by measuring or by the placard rather than by the badge on the tailgate.

How to Count the Lugs and Measure the Circle

Counting lugs is the easy half. Measuring the circle is where the method depends on whether the count is even or odd. On even-lug wheels — 4, 6, or 8 — two studs always sit directly across from each other, so you measure straight through the center. On 5-lug wheels nothing lines up across the middle, so you use a far-edge trick instead.

Measure in millimeters if you can, then compare against the standard sizes above — 139.7, 114.3, 127, 150, 165.1. A tape measure gets you close, but the gap between neighbors (5x114.3 versus 5x120, or 6x135 versus 6x139.7) is small enough that a few dollars spent on a bolt pattern gauge removes the guesswork. Once you know the pattern, the wheel's offset is the second half of fitment; our guide to wheel offset and backspacing covers the ET number that decides how far in or out the wheel sits.

Same Math as a Trailer, Different Common Sizes

If you have measured a trailer hub before, this is the same geometry — even-lug wheels straight across, 5-lug wheels by the far-edge method. Nothing about counting and measuring changes between a pickup and a boat trailer. What changes is the menu of common sizes: trailers lean heavily on patterns like 4x100, 5x114.3, 5x139.7 (5x5.5-inch), and 8x165.1, while passenger and heavy-duty trucks spread across the range in the table above. Our guide to measuring a trailer wheel bolt pattern walks through the trailer side step by step and lists the sizes you will actually run into on an axle.

One reason bolt patterns matter to us directly: several of our Rhino Predator wheels are dual-drilled — 139.7 alongside 127, 135, or 150 — so a single wheel bolts up to more than one truck or SUV, which is useful when a pattern sits on the border between two sizes. Alongside those, our street and off-road lines include Pegasus, Impact, Tuscani, and Xdrive, and every wheel lists its bolt pattern in the specs so you can match it to the number you measured. You can browse them in the wheel collection; orders ship free from our Orlando, FL warehouse and typically reach the Southeast in 1–3 days.

On the tire side, once the wheel fits, we carry LT pickup sizes up to 235/85R16 along with all-terrain and large-diameter low-profile fitments, mostly in value brands like LANDSAIL, LEAO Lion Sport, GOODRIDE, and NEBULA. Browse tires or call (407) 821-7008 if you want a second set of eyes on fitment before ordering.

FAQ

Can I put a 6x135 wheel on a 6x139.7 truck?
No. They are both "six lug," but 6x135 (many Ford F-150 and Expedition models) sits on a 5.31-inch circle and 6x139.7 on a 5.5-inch circle. The studs will not line up and the wheel will not seat flush. Bolt patterns have to match exactly — a few millimeters is a mismatch, not a rounding error.

How do I measure a 5-lug pattern when no two holes line up?
Measure from the center of one lug hole to the outer (far) edge of the hole two positions over, skipping the neighbor next to it. That distance is close to the true bolt circle diameter. A low-cost bolt pattern gauge does it faster and removes the guesswork between similar sizes like 5x114.3 and 5x120.

Is measuring a trailer bolt pattern any different from a truck?
The method is identical — even-lug wheels measure straight across, 5-lug wheels use the far-edge trick. What differs is the common sizes: trailers lean on patterns like 5x114.3, 5x139.7, and 8x165.1. Our trailer bolt pattern guide covers the trailer-specific sizes in detail.

Sources: Tire and Rim Association wheel and rim standards; vehicle manufacturer wheel-fitment specifications; wheel manufacturer bolt-pattern reference charts; DOT/NHTSA wheel guidance. Bolt patterns vary by year, trim, and drivetrain — confirm against your specific vehicle's placard or an accurate measurement before ordering.