PCD Re-Pitching
At TT Precision Engineering, we provide precision CNC PCD re-pitching — converting the bolt pattern (Pitch Circle Diameter) of an alloy wheel so it fits a different vehicle. Whether you’re adapting a set of wheels from 5×112 to 5×114, matching a rare or discontinued fitment, or preparing wheels for a custom build, our CNC machining delivers accurate, repeatable results without compromising the wheel’s strength or safety.
What is PCD re-pitching?
PCD (Pitch Circle Diameter) is the diameter of the imaginary circle passing through the centre of each wheel bolt hole, combined with the number of bolts — for example, 5×112 or 5×114.3. Re-pitching is the process of machining a wheel so its existing bolt holes are moved to a new pitch circle, allowing a wheel designed for one vehicle to be safely fitted to another.
How Our CNC PCD Re-Pitching Process Works
- Assessment & Measurement — We inspect the wheel and confirm the current PCD, bolt count, and material condition, then confirm the target PCD required for your vehicle.
- CNC Programming — Using calibrated CNC equipment, we programme the exact new bolt hole positions to precise engineering tolerances.
- Precision Machining — The wheel is either re-drilled to the new pitch or, where the hole positions overlap, existing holes are plugged first and new ones machined in the correct location — a process we also carry out as a standalone wheel plugging service where needed.
- Quality Check — Every wheel is checked for accuracy, symmetry, and structural integrity before it’s signed off.
Why Choose PCD Re-Pitching Over an Adapter?
Bolt-on PCD adapters are a common shortcut, but they add weight, increase the wheel’s offset, and introduce an extra component that can work loose over time. Re-pitching modifies the wheel itself, so:
- Original Fitment Feel — No adapters, spacers, or added stack-up between the wheel and hub.
- Retains Correct Offset — Unlike adapters, re-pitching doesn’t push the wheel further out from the hub.
- Engineered, Not Bolted On — The new bolt pattern is CNC-machined directly into the wheel to precise tolerances.
- One-Time Job — Once re-pitched, the wheel simply bolts up like any factory-fitted wheel.
Common PCD Conversions We Carry Out
We regularly re-pitch wheels across popular UK and European bolt patterns, including:
- 5×112 to 5×114.3 (and vice versa)
- 5×108 to 5×112
- 4×100 to 4×108
- 5×100 to 5×114.3
- Multi-fit and custom PCD conversions for motorsport, classic, and specialist builds
If your required conversion isn’t listed here, get in touch — most PCD conversions are possible with the right machining approach, and we’ll advise honestly if a wheel isn’t suitable for re-pitching.
Built on Precision Engineering Experience
TT Precision Engineering brings decades of CNC machining experience to every wheel that comes through our workshop. Re-pitching is machined to calibrated tolerances so the finished wheel is secure, balanced, and safe to drive on — the same standard of accuracy we apply across our wider wheel machining and precision engineering work.
Frequently Asked Questions
Can any alloy wheel have its PCD changed? Most alloy wheels can be re-pitched, but it depends on the wheel’s construction, the amount of material around the existing bolt holes, and how close the new holes would sit to the old ones. We assess each wheel individually and will advise if a wheel isn’t a good candidate for re-pitching.
Is PCD re-pitching safe? Yes, when carried out correctly. We use calibrated CNC machining to position new bolt holes precisely, and every wheel is checked for structural integrity before it’s returned. We won’t re-pitch a wheel if we believe it would compromise safety.
What’s the difference between PCD re-pitching and a PCD adapter? An adapter is a separate bolt-on component that sits between the wheel and hub, changing the effective PCD but adding weight and altering offset. Re-pitching machines the new bolt pattern directly into the wheel itself, so there’s no extra component and the offset isn’t affected.
Do you need to plug the old bolt holes? Only if the new bolt positions overlap with the originals. In that case, we plug the old holes first and then machine the new pattern into the correct position, all as part of the same job.
How much does PCD re-pitching cost? Cost depends on the wheel, the specific conversion required, and whether hole-plugging is needed first. Contact us with your current and target PCD and we’ll provide an accurate quote.
How long does PCD re-pitching take? Turnaround varies with workshop volume and whether plugging is required, but most re-pitching jobs are completed within a few working days. Get in touch for a current lead time.
Get a Quote for PCD Re-Pitching
Whether you’re converting a single set of wheels or need re-pitching as part of a larger custom wheel project, our team can advise on the best approach for your vehicle.
Please GET IN TOUCH… We will be happy to discuss your requirements.
Custom Wheel Inquiries
For truly bespoke wheel customisations that go beyond our standard services, we’re ready to help. Whether it’s a one-of-a-kind design or specialised machining, contact us to discuss your requirements and create the ideal solution for your vehicle.
Please GET IN TOUCH… We will be happy to discuss your requirements.
