M14 x 1.5 is the correct internal thread.
The link below is to a metric drawing of the lug nuts for my LR3, the same as the jpg attached but with more data.
I think they are the same for the LR4.
The inch drawing in the post above appears about correct.
The important item is the "washer" that is fixed to the lug nut.
https://www.disco3.co.uk/gallery/displayimage.php?album=3801&pos=23
The link below is to a metric drawing of the lug nuts for my LR3, the same as the jpg attached but with more data.
I think they are the same for the LR4.
The inch drawing in the post above appears about correct.
The important item is the "washer" that is fixed to the lug nut.
https://www.disco3.co.uk/gallery/displayimage.php?album=3801&pos=23