I am disappointed by the new fascination with conical seats on mag wheels. There has to be a reason, either cheaper or easier for the manufacturers, but it just causes stud problems on our old cars.
Assume a stud with 3/4" of working thread. If your wheel center is a 1/2" thick, you now have a quarter inch of thread left. With the old style mag lugs, with the shoulder inside the wheel center, you had all 3/4 inch threads to use.
Now, with these new wheels you almost always need new long studs, and you always do if you need to use a spacer. The trouble is FINDING new longer studs that can work.
I have a couple sets of the conical seat wheels, and in both cases, the car already had 3" studs, but I prefer the old style mags lugs.
