Hi, welcome to the forum. From your profile it seems you just got an S13 and are trying to deal with some problems.
For the love of God, there is a search function on the top left that you can use.
Just because the threads are older, it doesnt mean the information isn't valid anymore.
Please do that before you start 17 new threads asking for the same things that have been asked since 2002.
Spacers are not the answer to everything. Ideally you would get wheels that fit the vehicle appropriately, so you don't need to use spacers. Using spacers, you are now pushing the outer wheel closer to the fender, where you may exhibit rubbing again.
There are two types of spacers.
Slip on spacers look like one huge washer with the holes cut out for your lug pattern.
Bolt on spacers are thicker usually. They bolt to your existing studs and then you bolt your wheels to the spacers.
To run slip on spacers, most of the time you will need extended lug studs.
They are not hard to replace, youtube will show you how.
This is because your factory wheel studs are probably M12 x 1.5.
General rule of thumb is that you want 1.5 x the diameter of the bolt (12mm in our case) as your thread length for your lug nut to screw onto.
Meaning, go get a caliper (~$15 )
https://www.homedepot.com/p/WEN-6-1-...0761/306638595
Take off one lug nut, and measure if you have 18mm of exposed wheel stud thread.
You probably don't.
That will rule out slip on spacers for you.
This means now you have to look at bolt on spacers.
The problem with them is that they have metal wheel studs (as you should ) in an aluminum spacer.
When you torque it down or try to loose the lug nuts, at one point or another you WILL get a stud that spins. The steel stud will overpower the knurling inside the aluminum spacer. Have fun getting that off.