Before you modify your vehicle

If you are thinking about modifying, customising or re-tuning your car, do it properly – it might cost you a bit extra, but if you don't do it the right way it could cost you your life.

Your modification might need Low Volume Vehicle (LVV) certification.

If the modification you want requires LVV certification, start with the experts.

  • Discuss the modification with someone who has already successfully completed such a modification.
  • Check the technical standards information on the Low Volume Vehicle Technical Association's (LVVTA) website and find out what is required to ensure your vehicle remains safe.
  • Contact your local LVV certifier – a list of LVV certifiers can be found at www.lvvta.org.nz.

Take special care with . . .

  • Modified suspensions, which could alter the handling characteristics of your vehicle. If the modification exceeds a specified threshold, the vehicle must be checked by an LVV certifier. To find the threshold look on the LVVTA's infosheet on modification thresholds.
  • Some engine conversions or engine modifications which could result in the braking system being inadequate for the performance potential of your car. An LVV certifier will ensure that your braking system remains safe.
  • A racing seat, which can provide you with better support, but if it is incorrectly attached and positioned in the vehicle, it can adversely affect the way that your seatbelt protects you in a crash.
  • Steering modifications, which should be done only by experts. The inherent dangers in modifying steering systems mean it is essential that you get a LVV certifier to check these.

What you must do

  • Before modifying your vehicle, be sure that it will remain safe.
  • Check if the modification requires LVV certification. Some modifications will be covered by Warrant of Fitness (WoF) inspection requirements but others will need to be certified by an LVV certifier.
  • Talk to a WoF inspector about the limits set out in their Vehicle inspection requirements manual, or talk to an LVV certifier, or read the infosheet on modification thresholds.
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