Did some measuring... My rear wheels studs seem to be the 65mm. Since I have about 48mm sticking from the rotor face. Tough to measure with the wheels on. But that leaves 17mm to come up with 65mm so makes sense. My guide is also rounded not square. Everything I can find leads me to believe I have front wheel studs on the rear axle??? The 80mm stud sounds like it would work fine, being roughly 1/2 inch longer... Anyone have an opinion?
What I am doing is mounting a wheel adapter onto the back. And my wheel already takes up 1 full inch of the stud.