While my gril takes her yearly Winter nap, I am getting her ready for her new Rims and Tires.
My issue right now is around the length of the wheel studs.
When the new wheels are mounted, I am getting 6 turns of the wheel nuts on the fronts and 8 turns on the rears.
Do I have enough turns of the nut to safely keep the wheels on? I am not racing the car. Vast majority of my driving is touring around town and some country roads but I do occasionaly hit the highways.
I have seen a few threads on replacing the current wheel studs with extended studs. Most have used ARP and fit our Spiders.
Picture 1 below shows the actual ARP bolt I am thinking of, part number 7712. The original bolt shown is from a GTV so I don't know its length.
The length of the ARP bolt from shoulder to tip is 72mm. Note the end which has no threads and I am guessing is 10mm in length.
Picture 2 below shows the Front Bolts length from shoulder to tip at 52mm and the Rear Bolt from shoulder to tip at 58mm. Threads to the tip of the bolt. No flat spot like the ARP.
If I need more threads to increase the amount of turns of the nut, will these extended studs give me enough considering the tip has no threads?
I'm calculating that I will get an additional 4mm of thread (14mm of bolt including the non threaded area) on the fronts and 10mm of additional thread (20 mm of bolt including the non threaded area) on the rears.
Am I looking at a lot of work? Most threads I have seen say for the Fronts to remove the caliper, rotate the disc, press the old bolt out and press the new one in.
For the rears, I have read to use the parking brake cable hole to remove and replace the bolts.
As always thanks for your help.