I have an older care with one of the lug nuts missing and they are proving hard to find and exact replacement for. I picked up some lug-nuts that fit down snug but my concern is that the new lug nut has a shank with a slightly smaller outer diameter than the other lug-nuts.
As you can see in the photos the new lug nut bolt has the same size threads that go into the rotor but the threads are smaller on the nut side. The shank on the new lug-nut is also smaller by about a millimeter or so.
My main question is, is it unsafe to drive with a lug-nut that has a slightly smaller shank than the original nuts?
Related question, is it Ok to have one lug nut that's slightly different or should I change them all?