Petri Hub Adapters for BMW
Some parts are harder to find than the wheel itself.
This is one of them.
by Mads – April 6, 2026
The Problem with Petri Hubs, Petri steering wheels were never meant to be modular.
They were sold as complete sets:
- Steering Wheel
- Hub Adapter
- Horn Button
Not separately. Which means today: Finding a Petri Hub Adapter is often harder than finding the wheel.
Different Hub Variants
It gets more complicated.
There isn’t just one Petri hub.
BMW E10 (2002)
- shortest version
- approx. 87mm cover length
- 3 ribs
BMW E9 (CS / CSi)
- medium length
- approx. 93mm cover length
- 4 ribs
BMW E10 (2002)
- longest version
- approx. 102mm cover length
- 4 ribs
Horn Contact Differences
Even if the spline fits, the horn system doesn’t always match.
- E10 uses a spring-loaded plunger
- E9 uses the reverse setup
Meaning: Not every hub works out of the box across models.
The Reality Today
If you find:
- a Petri wheel without a hub
- or a mismatched setup
You have three options:
- Wait (possibly forever)
- Modify parts (not recommended)
- Use a modern solution
A Different Approach
Instead of chasing rare original hubs: Use a widely available Momo hub.
And adapt the wheel — not the other way around.
The Solution
The Petri to Momo hub adapter was designed exactly for this.
- keeps the steering wheel untouched
- ensures proper fitment
- works across platforms
Final Thought
Original hubs are part of the story.
But they shouldn’t stop you from using the wheel.