S13NismoStyle

Hi, i got two questions actually.

First one, I was looking at getting a 25mm bolt on adapter style wheel spacer. I have found a vendor that sells Hubcentric adapter style spacers. Has anyone used these hubcentric style? Because they also carry a universal style spacer as well. The only problem is that they will not have the hubcentric spacers for another 6-8 weeks and id really not like to wait that long.

So the Question is, Has anyone used universal bolt on/Adapter style spacers and have you had any problems with the wheel shaking? Or should i just wait for the hubcentric(i know these will be better).

The Next question is, the wheels that i have right now(that are waiting on the spacer) After i put them on and notice wheel shake from 45-55mph. I have had the wheels balanced and when the stockies were on, there was no shake at all. I believe the shake is caused by the wheel not being hubcentic. Does that sound right? So hubcentric rings might correct the problem even though the wheels have the correct bolt pattern for my car?

I hope i didnt confuse anyone. Thanks for your help.