Wheel Plugging for Alloy Wheels

At TT Precision Engineering, we provide precision wheel plugging — filling existing bolt holes in an alloy wheel so new ones can be machined in the correct position. It’s an essential step whenever a wheel’s new bolt pattern would overlap with its original holes, most commonly as part of a PCD re-pitching job or a correction to a wheel that’s been incorrectly drilled.

What is wheel plugging, and when is it needed?

Wheel plugging involves precisely filling an existing bolt hole with material matched to the wheel, then machining it flush so a new hole can be drilled in the correct position without weakening the wheel. It’s typically required when:

A wheel is being re-pitched to a new bolt pattern that overlaps with the original hole positions
An alloy wheel has been incorrectly drilled and the holes need repositioning
A wheel needs repurposing for a different vehicle and the bolt pattern doesn’t line up cleanly

How Our Wheel Plugging Process Works

Assessment — We inspect the wheel to confirm which holes need plugging and identify the correct new bolt hole positions.
Plugging — The original hole is filled with a material suited to the wheel’s construction, ensuring a strong, stable base for re-machining.
CNC Machining — Once plugged, the area is precision machined flush, and the new bolt hole is drilled to the correct position using calibrated CNC equipment.
Quality Check — Every wheel is checked for structural integrity, accuracy, and finish before it’s signed off.

Why Plugging Matters for a Safe Result

Simply drilling a new hole close to an old one without plugging it first can weaken the wheel and compromise the strength of the finished bolt hole. Plugging ensures:

Full Structural Support — The new bolt hole sits in solid, correctly prepared material rather than partially overlapping an old hole.
A Clean, Finished Look — Properly plugged and machined areas are flush and consistent with the rest of the wheel.
Safe, Reliable Fitment — The finished wheel performs as if the new hole was there from the start.

Commonly Paired With

Wheel plugging is rarely a standalone job — it’s usually the first stage of a wider modification:

PCD Re-Pitching — Converting a wheel to a different bolt pattern where the new holes overlap the old ones.
Custom Drilling for Blank Alloy Wheels — Correcting or repositioning holes on a wheel that’s already been drilled.

Built on Precision Engineering Experience

TT Precision Engineering brings decades of CNC machining experience to every wheel that comes through our workshop. Plugging and re-drilling is carried out to calibrated tolerances so the finished wheel is structurally sound, safe, and ready for its new bolt pattern — the same standard of accuracy we apply across our wider wheel machining and precision engineering work.

Frequently Asked Questions

Can a bolt hole in an alloy wheel be filled and re-drilled? Yes. The original hole is plugged with material suited to the wheel’s construction, then precision machined flush before the new hole is drilled in the correct position. This is a standard part of PCD re-pitching and correcting incorrectly drilled wheels.

Is a plugged and re-drilled wheel as strong as the original? When carried out correctly, plugging restores solid material around the new bolt hole so it can be safely re-drilled. We only carry out plugging where it can be done without compromising the wheel’s structural integrity, and every wheel is checked before it’s returned.

Do I need plugging if I’m just re-pitching my wheels? Only if the new bolt pattern’s hole positions overlap with the original ones. We assess this during the PCD re-pitching process and will confirm whether plugging is required for your specific conversion.

Can you fix a wheel that’s been drilled in the wrong place? In many cases, yes. We can plug the incorrect hole and re-machine it in the correct position, provided there’s enough surrounding material to do so safely. Get in touch with details of your wheel and we’ll advise.

How much does wheel plugging cost, and how long does it take? Cost and turnaround depend on the wheel, the number of holes involved, and whether it’s part of a wider job like re-pitching. Contact us with your wheel details for an accurate quote and current lead time.

Get a Quote for Wheel Plugging

Whether you need a single hole corrected or plugging as part of a full PCD conversion, our team can advise on the best approach for your wheel.

Please GET IN TOUCH… We will be happy to discuss your requirements.