Toyota and Lexus have announced a significant change in the wheel assembly for specific models, including the Lexus LC, NX, RX RZ, IS from 2020 production change, and Toyota Supra, bZ4X. These models now come equipped with wheel hub bolts, departing from the more traditional stud and nut setup.
The shift to wheel hub bolts requires meticulous attention during the fitting process to ensure correct mounting and tightening of the wheels. This article highlights the crucial aspects that technicians and vehicle owners must consider when working with wheel hub bolt-equipped vehicles.
Guidelines for hub bolt installation
• Correct mounting: Utilise aligning tools with specific SST part numbers for each model, ensuring precise wheel placement.
• Torque specifications: Always consult the repair manual for the accurate torque figures for the specific vehicle being serviced.
• Part number specificity: Use only the designated part number for each wheel/vehicle to avoid interchangeability issues, even with seemingly identical genuine wheels.
• Surface preparation: Remove dirt or foreign matter from the contact surfaces and wheel hub bolts for a secure connection.
• Washer and stopper ring checks: Inspect bolts with washers, especially on the BZ4X, to ensure smooth rotation and no damage. Verify correct positioning and condition of stopper rings.
Importance of genuine parts
It is imperative to underscore the significance of using Toyota genuine parts, especially when it comes to wheel hub bolts. Wheel hub bolts are not interchangeable between different wheel styles, even if they are genuine and visually similar.
Aftermarket modifications
As issues arising from modifications are not covered by any warranty, customers are advised to ensure compatibility with the vehicle, however, TNZ does not endorse the fitment of aftermarket wheels and wheel hub bolts.
This transition to wheel hub bolts represents a significant enhancement in wheel assembly. To ensure the longevity and performance of these vehicles, it is paramount to adhere to the outlined guidelines and, most importantly, use Toyota genuine parts. Genuine wheel hub bolts and wheels not only guarantee proper functionality but also safeguard against potential warranty issues arising from non-standard modifications.
