ARP Front Extended Wheel Studs For Nissan Skyline R32 GTST GTS-4 GTR & Mitsubishi Lancer Evolution 1 I 2 II 3 III 4 IV 5 V 6 VI 7 VII 8 VIII 9 IX 10 X 100-7717

ARP Extended Wheel Studs

Perfect for Skyline R32 models.
Some work is required to swap these over, we would reccomend professional installation.
Includes x5 stud, perfect for a 5 stud car, or if you have a 4 stud car you will have a spare stud.
For one car, buy two sets. 

With a tensile strength of 190,000 psi, these heat-treated, cadmium-plated 8740 chrome moly wheel studs are a must for any car in competitive racing or high horsepower applications.

Knurl Diameter: 0.565˝
UHL: 3.000˝
Knurl Length: 0.270˝
Nose Length: 0.350˝
Diameter - Pitch: M12 x 1.5
Wheel Stud Hole Size - Cast Iron/Steel Hub: 0.549˝ - 0.559˝
Cast Iron/Steel Hub Drill Bit Size (actual dim.): 14mm (0.551˝)
Wheel Stud Hole Size - Aluminum Hub: 0.549˝ - 0.555˝
Aluminum Hub Drill Bit Size (actual dim.): 14mm (0.551˝)

Installation Guide: Replacing Front Wheel Studs on Your R32 Skyline
Introduction
Replacing the front wheel studs on your Nissan Skyline R32 is a straightforward process. This guide will provide you with step-by-step instructions for a hassle-free installation. The instructions below are applicable to both 4-lug and 5-lug Skyline models.

Tools and Equipment Needed:
Jack
Jack stands
Socket set
Hammer
Replacement wheel studs
Wheel stud install tool

Step 1: Preparation
Safely jack up your Skyline and place it on jack stands. Do not leave it supported solely by the jack.

Step 2: Disassembly
Remove the lug nuts, wheel, brake caliper, and brake rotor from the wheel hub.

Step 3: Removal of Old Studs
Using a hammer, strike the old wheel studs until they come out of the back of the hub.

Step 4: Installation of New Studs
Place a new wheel stud in the open slot on the hub.
Position the wheel stud install tool over the lug nut, ensuring the tapered end faces outward.
Thread one of your spare lug nuts over the new stud.
Use an impact wrench to tighten the lug nut until it pulls the new stud into place.
Check the back of the hub to ensure the stud is flush with the surface.

Step 5: Repeat the Process
Repeat the installation process for each wheel stud on both sides of the vehicle.

Step 6: Final Checks
Double-check that all wheel studs are securely installed and flush with the hub surface.
Reinstall the brake rotor, caliper, wheel, and lug nuts.
Lower the car back onto the ground.
Tighten the lug nuts to the manufacturer's specifications.
Congratulations! You have successfully replaced the front wheel studs on your R32 Skyline. Ensure to conduct a test drive to ensure everything feels and sounds right. Enjoy your enhanced safety and performance on the road!

Wheel Stud Hole Sizes and Proper Interference Fit for the Knurl
ARP OEM replacement wheel studs are designed to press-fit into the original hole in the OEM hub (preferably with a hydraulic press, as using a nut can create problems).

If you are using one of our kits in another application, the hole should be checked to ensure it falls within the correct tolerance to allow for the proper amount of interference, so that the stud won’t spin in the hole. For steel and cast iron hubs, the hole should be 0.006-0.016˝ smaller than the Knurl Diameter. For aluminum hubs, the hole should be 0.010-0.016˝ smaller than the Knurl Diameter. As a courtesy, we have provided the closest standard drill size that will provide a hole in that range.

If the hole is larger than the tolerance listed for the material, then the studs should not be used with that hub. The interfernce fit will not be tight enough and the stud could spin in the hole.

If you need to drill out the holes in your hub, the holes must be kept perpendicular to the face of the hub. If you do not have a fixture that clamps to the hub to guide the drill straight, use a setup similar to the one in the image at below. (A hand drill will not produce satisfactory results.)

All ARP wheel studs have an underhead radius. Each hole must be chamfered 0.025˝ to clear the underhead radius and prevent stud failure.