UK ManufacturedMachined in-house, not imported
HubcentricBored to 71.6mm — no vibration
Ball-seat bolts includedMatched to your chosen thickness
Lifetime guaranteeOn materials and manufacture
Porsche hubcentric wheel spacers — from £99 per pair, extended ball-seat bolts included. 5×130 PCD, 71.6mm bore, for the full water-cooled 911/Boxster/Cayman/718/Panamera range.
Check this before ordering

Wheel Bolts or Wheel Studs & Nuts?

This kit is supplied with extended ball-seat wheel bolts. Some Porsches — particularly certain US-market and specific model-year cars — use wheel studs and nuts instead of bolts. Studs and nuts are not included in this kit. Confirm which hardware your car uses before ordering.

Extended bolt sizing
Standard bolt shank29mm
7mm spacer36mm bolt
15mm spacer44mm bolt
20mm spacer49mm bolt
25mm spacer54mm bolt
Aftermarket wheels — check first
NoteMany aftermarket wheels have deeper bolt pockets than OEM Porsche wheels, meaning your existing bolts may already be longer than the 29mm standard. Before fitting, remove one existing bolt and measure its shank length — if it isn't 29mm, contact us before ordering so we can confirm the correct extended bolt length for your setup.
Minimum thread engagement

A minimum of 9 full turns into the hub carrier is required for safe installation — equal to the bolt diameter (14mm for M14). This is the recognised engineering standard, not a Brightstone-specific figure.

Centre-lock wheels?

If your Porsche uses centre-lock wheels (a single central nut rather than 5 bolts — common on GT3, GT2 RS and some Turbo models), this bolt-on spacer isn't the right product. See our Centre Lock Wheel Adapter instead.

Porsche 911 with Brightstone Engineering wheel spacers
In development

Coming Soon — SUV, EV & Classic Porsche

These fall into two different groups, both currently outside our range for different reasons.

SUV and EV platforms — Macan, Cayenne and Taycan are built on entirely different platforms to the 911/Boxster/Cayman/Panamera range and likely use a different PCD or bore, not just a variation on 5×130/71.6mm.

Porsche Macan Wheel Spacers
Fitment tbc
Coming soon
Porsche Cayenne Wheel Spacers
Fitment tbc
Coming soon
Porsche Taycan Wheel Spacers
Fitment tbc
Coming soon

Classic air-cooled and transaxle models — our current product is explicitly scoped to water-cooled Porsches (996 onwards). Air-cooled 911s and the front-engined transaxle cars are a different era with likely different specifications.

Porsche 911 Wheel Spacers
964 / 993 (air-cooled)
Coming soon
Porsche 928 Wheel Spacers
Fitment tbc
Coming soon
Porsche 944 / 968 Wheel Spacers
Fitment tbc
Coming soon
Want one of these sooner?

Tell us your model and we'll factor demand into what we machine next. WhatsApp us or use the contact form.

Thickness guide

Choose Your Spacer Thickness

The right choice depends on your wheel offset, ride height and the stance you want.

Thickness Best for Popular models
7mm Subtle — a flat shim spacer where the hub spigot protrudes through and centres the wheel directly. Popular on the front axle where clearance is tighter. Often paired with 15mm rear on early 996/997
10mm Coming soon Between 7mm shim and 15mm hubcentric
15mm OEM+ and the most popular choice across the full range — meaningful stance improvement while looking factory-correct. Fully hubcentric. 996, 997, 991, 992, Cayman, Boxster
20mm Flush fitment — works well on cars running coilovers where the wheel tucks further inboard. Fully hubcentric. Lowered 991 and 992 Carrera
25mm Aggressive — wheel face sits flush with or slightly proud of the arch lip. Check clearance carefully first. Track use and aggressive road setups
Need advice?

Tell us your Porsche model, generation, wheel size, offset and ride height and we'll recommend the right thickness. Message us on WhatsApp.

Why Brightstone Engineering

Built for Porsche. Made in Britain.

Hubcentric precision
Bored to 71.6mm to match your Porsche hub exactly. The hub carries lateral load — not the bolts. No vibration, no centering rings required.
Ball-seat bolts included
Every kit ships with extended ball-seat wheel bolts sized to your chosen thickness. No separate bolt purchase required — everything you need is in the box.
UK CNC machined
Every spacer machined from 6082-T6 billet aluminium in our UK workshop. Not imported, not relabelled — made to tight tolerances for performance fitment.
Porsche wheel with Brightstone Engineering spacer fitted
Before you order

Common Porsche Wheel Spacer Mistakes

01
Not checking bolts vs. studs and nuts
This kit includes extended ball-seat bolts. If your Porsche uses wheel studs and nuts instead, they aren't included — confirm your hardware type before ordering.
02
Assuming your bolt shank is the standard 29mm
Aftermarket wheels often have deeper bolt pockets than OEM. If your existing bolts aren't 29mm, the supplied extended bolts may not be the correct length — measure first.
03
Buying universal, non-hubcentric spacers
Universal spacers rely on the wheel bolts alone to centre the wheel instead of the hub, which often causes vibration and uneven loading. Always use spacers hubcentric to your specific Porsche.
04
Ordering for a centre-lock car
GT3, GT2 RS and some Turbo models use centre-lock wheels (a single central nut), not 5-bolt fitment. This spacer isn't compatible — see our Centre Lock Wheel Adapter instead.
05
Skipping minimum thread engagement
A minimum of 9 full turns (around 14mm) into the hub carrier is required for a safe installation — check this on every wheel, every time.
The good news

Every one of these is avoidable. Confirm your hardware type, measure your bolt shank, choose correctly specified hubcentric spacers, and check thread engagement — Porsche wheel spacers are a safe, reliable modification when done properly.

Installation

Fitting Porsche Wheel Spacers

01
Confirm your hardware type
Check whether your Porsche uses wheel bolts (included in this kit) or wheel studs and nuts (not included) before ordering.
02
Measure your existing bolt shank
Remove one existing bolt and measure its shank length. If it isn't the standard 29mm, contact us before ordering to confirm the correct extended bolt length.
03
Clean the hub face
Remove any dirt, corrosion or debris. The spacer must sit perfectly flat against the hub for correct hubcentric seating.
04
Locate the spacer on the hub
The spacer locates on the hub register and sits flush against the hub face. It should not rock or move once seated.
05
Refit the wheel with the supplied extended bolts
Confirm at least 9 full turns (≈14mm) of thread engagement, then torque using a calibrated wrench in a star pattern.
06
Re-torque after 50–100 miles
Re-check bolt torque after the first drive to confirm the assembly has fully seated and clamping load is maintained.
FAQ

Frequently Asked Questions

Does my Porsche use bolts or studs and nuts?
This kit is supplied with extended ball-seat bolts. Some Porsches — particularly certain US-market and specific model-year cars — use studs and nuts instead, which aren't included. If you're not sure, message us your model and we'll confirm.
Will this fit my centre-lock Porsche?
No — centre-lock wheels (a single central nut, used on GT3, GT2 RS and some Turbo models) need a different product. See our Centre Lock Wheel Adapter instead.
What size spacers should I fit to my Porsche?
15mm is the most popular choice across the range and gives a factory-correct OEM+ look. 7mm is a subtle shim option, often used on the front axle. 20-25mm gives a more aggressive stance — check clearance carefully first.
Are Porsche wheel spacers safe?
Yes, when correctly specified, installed with the correct bolts (or confirmed studs/nuts compatibility), and torqued with adequate thread engagement. Hubcentric spacers bored to 71.6mm locate on the hub register — the hub carries lateral load rather than the bolts.
Do wheel spacers affect wheel alignment?
No — properly fitted hubcentric spacers don't change camber, caster or toe, since they don't alter any suspension geometry; they simply move the wheel further out along the existing hub axis. It's still worth a quick geometry check after any modification, particularly if you're also changing wheel offset significantly.
What is the guarantee?
All Brightstone spacers carry a lifetime guarantee covering materials and manufacturing defects. UK-made — if there is an issue with the part, we stand behind it.
How do Brightstone spacers compare to H&R or other brands?
Like H&R, our spacers are hubcentric and CNC-machined — but every Brightstone kit is machined to order from 6082-T6 billet in our own UK workshop, rather than imported, and ships with extended bolts matched to your exact spacer thickness included as standard. If you're comparing brands, that's the main practical difference: nothing to source separately, and full traceability on where and how it was made.
Legal & MOT (UK)

The MOT test doesn't prohibit wheel spacers directly — it checks that wheels and tyres don't protrude beyond the bodywork. Correctly sized spacers that keep the wheel within the arch aren't an MOT concern on that basis. As with any modification, you should declare fitted spacers to your insurer. This is general guidance, not a substitute for checking your specific policy or vehicle requirements.

Ready to improve your Porsche's stance?

Porsche hubcentric wheel spacers from £99 per pair — extended ball-seat bolts included. 5×130 PCD, 71.6mm bore, for the full water-cooled range. CNC machined in the UK.