Frequently asked questions


  • How to break the bead of radial tires?
    - Follow the procedure for radial tires! Request a copy by e-mail from spares(at)
  • Is the use of lubricant applied to the bead seat of the rim helpful?
    - Yes, for radial tires, once the bead of the radial tire is broken! With a lubricant applied onto the rim seat the bead toe of the tire will slip easier. Do not apply lubricant to the tire side walls!

Wheel Assembly / Disassembly

  • Do we need a tool holder (adapter) for KUNZ UAS Universal Assembly/Disassembly Stand machines for each different wheel model/make?
    - Yes, even wheels for the same type of aircraft may differ in bolt circle dimensions or wrench sizes for nuts and bolts, if from different manufactures (e.g. Goodrich, Dunlop, Honeywell, Messier-Bugatti).
  • Do you offer tool holders (adapters) for other than KUNZ assembly machines?
    - Yes, please specify machine make with your order!
  • Can we use tool holders (adapters) of other makes with the KUNZ assembly machines?
    - Yes, a matching interface is required and available from KUNZ!