spacers - Confirmation
 

If I remember from my previous Z and my multiple Infinitis, if I get the 20MM spacers I don't need to either swap the wheel studs or grind them - the depth of the spacer will allow just a bolt on application. I think with the 15mm is the stock stud still needed a thread ground off. Or are 15 and 20mm ok as is?

Correct?

In the past I had H&R sets and I can't remember the other brand...I wish I had kept my old sets after I sold the cars....ugh.

Bolt replacement are safer and are recommended for splicers 10mm or greater.