Wheel Bolt Patterns Explained: PCD, Lug Count, and Cross-Compatibility

Before offset, before width, before any of the fun decisions — a wheel either bolts to your hub or it doesn't. That's the bolt pattern, and unlike most fitment specs there's no "close enough." This guide explains how to read a pattern like 5x114.3, how to measure one on your own car, and which near-miss patterns catch people out.

Reading the number

A bolt pattern has two parts: 5x114.3 means 5 lug holes arranged evenly on a circle 114.3mm in diameter. That circle is the PCD — pitch circle diameter — an imaginary ring passing through the center of every lug hole. Some patterns are quoted in inches in older American catalogs: 5x4.5" is the same thing as 5x114.3, and 5x100 is sometimes written 5x3.94".

Measuring PCD on your own hub

• 4-lug and 6-lug: easy — measure center-to-center between two directly opposite studs. That distance is the PCD.
• 5-lug: no stud sits directly opposite another, so measure from the center of one stud to the outer edge of the stud two positions away (skipping one). That "far edge" trick lands very close to true PCD for common stud sizes. For a precise answer, measure center-to-center between adjacent studs and multiply:

Example: adjacent studs measuring 67.2mm apart × 1.7013 = 114.3mm — a 5x114.3 hub. Adjacent studs at 58.8mm × 1.7013 = 100mm — 5x100.

The patterns that matter

The near-miss traps

Several pattern pairs are close enough to physically force together and wrong enough to be dangerous. The lug holes will "sort of" line up, the wheel will torque down crooked, and the studs carry bending loads they were never designed for:

• 5x114.3 vs 5x115 — the classic. 0.7mm total difference, common because GM used 5x115 on cars that otherwise look like 5x114.3 candidates. Not interchangeable.
• 5x100 vs 5x98 — Fiat/Lancia's 5x98 wheels seat on a 5x100 hub just badly enough to vibrate and stress studs.
• 5x120 vs 5x120.65 — modern BMW pattern vs the old American 5x4.75" (Camaro/Corvette/S10). The 0.65mm difference is inside the slop of a tapered lug seat, which makes it extra tempting and still wrong.
• 5x139.7 vs 5x135 — older truck patterns that look identical at a glance.

Center bore: the pattern's silent partner

Two wheels with identical bolt patterns can still fit differently because of the center bore — the hole in the middle of the wheel that slips over the hub's raised lip. If the wheel's bore is smaller than the hub, it physically won't seat. If it's larger (typical for aftermarket wheels, which are drilled oversize to fit many cars), the wheel is no longer hub-centric: use hub-centric rings to fill the gap, or you risk a high-speed steering-wheel vibration that no road-force balance will cure. Lug nuts alone can center a wheel in principle, but rings cost a few dollars and remove the guesswork.

Can I swap wheels between cars?

Pattern match is the gate, but it's only the first of four checks: bolt pattern, center bore (ring-able if oversize), offset/width (does it clear and how does it sit), and load rating (truck wheels on trucks). The convenient part: every pattern page on this site lists all the platforms sharing that PCD, so you can see at a glance where a set of wheels could migrate — browse the full bolt pattern index, then check the actual fitment numbers for the target car in the calculator.

One nuance on stud hardware: matching pattern doesn't mean matching lug seats. OEM wheels commonly use ball (radius) seats on Honda and VW/Audi, while most aftermarket wheels use 60° tapered seats — the nut or bolt must match the wheel it clamps, not the car it came from. Reusing OEM ball-seat bolts on tapered aftermarket wheels is a wheel-departure story waiting to happen.