So I bought my 320 with only 2-4 rusty lug nuts per wheel. I was going to buy a whole new set but the lug nuts I have seems to have too much resistance with application and removal.
I was thinking that the studs were 7/16" -20. However I have some new never been used 7/16"-20 nuts that won't even go a full turn without feeling like it's getting crossthreaded.
I was planning on chasing the threads with a die but would like to confirm what size and pitch the lugs truly are, thanks!