BBS RZ Style 5 15 Inch BMW E30 Center Hub Cap

admin | 01.12.2025

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The center caps for these wheels can be more expensive than the wheels themselves. I designed them to be safer than the originals and easy to 3D print. Each cap consists of 4 parts:

  • Plate
  • Nut
  • Thread
  • Insert

Also required:

  • 8 M8 bolts
  • 4 BMW 68mm wheel badges (36136783536)

The threads and insert are designed to stay in the wheel and should only be removed when changing or balancing tires. I made prototypes out of PLA and ABS, but for the final version, I use ASA for better weather and temperature resistance.

Printing: you need to set your own settings as everyone’s printer is different. I printed the insert, plate, and thread without supports, and the nut with supports and upside down.

Installation Instructions:

  1. Insert the insert into the center of the wheel with the tapered side facing out.
  2. Align the holes and secure with bolts.
  3. Slide the plate onto the three slots in the threaded part and onto the three pins on the wheel.
  4. Install the nut and tighten it by hand.

Note the position of the nut in relation to the tire valve for reference. First, assemble everything on the wheel to ensure the threads are okay and everything fits well. This can all be done without removing the wheel. If you have fitting issues, try scaling the parts ±1%.

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Information
  • Author: admin
  • Date: 01.12.2025
  • Category: 3D Printing
  • Views: 60
  • Downloads: 64
  • Likes: 0
  • Images: 6
  • Files: 4

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