VoodooBOSS said:Both Moto and I have several sets of lug nuts to try and I already have the ARP studs mounted up front. We will post the info as soon as we our wheels. I have a couple of other sources for lug nuts that might fit including a recommendation from @JAJ for some GM OEM lug nuts that might work with the N4SM wheels.
The OEM GM open end M14x1.5 lug nuts are part number 9595174. They're 1" or 25.4mm diameter at the top of the cone, 20mm threaded length, 22mm across the flats and designed for 140 ft-lbs according to the Chevy owners manual I looked at.