Hey everyone,

I have recently picked up a yellow FJ Cruiser, and I am totally happy I got it, as it was my dream for several years.
There are certain things I plan on improving about it. Yet, there is one question I am eager to ask you folks. Is here someone who is familiar with spike lug nuts?
I plan on putting yellow spike lugs on my FJ, yet I have never had them in any of my cars, and do not know much about them.
Here are my main concerns:
1) Are they street legal?
2) Do they make extra noise?
3) Is it better to pick one- or 2-piece lugs?
4) What material is better: steel or aluminum?

Many thanks.