is a 20mm spacer going to cause my wheels to be unsafe in any way?

 

I know Carter and Jim Thompson used spacers, but I don't remember what size. With longer studs, you're probably not going to have a problem.

 

Jim said they used the limit, 25mm. He was selling them for a while.

 

I used spacers on my 240SX for three years in autocross and track events with no issues at all. I had bolt on type in the front, and long studs with slide on spacers in the rear... no problems with either at all.

 

thanks guys, I bought some h&r 20mm spacers w/ 60mm hub bolts.

 

where did you get them from? Are they Z specific studs, or just standard 12x1.25 with whatever length? I know the knurl size(whatever it's called) is pretty important.

 

I also run the H&R 20mm spacers with the studs they provide (which I seem to remember are slightly longer than 60mm?) I know these where back ordered for a few months, could be they changed the studs they provide.

The knurled ends match the stock ones good, maybe a little shorter... haven't hand any problems with them for over 10,000 miles, they fit real tight. I usually change studs once a year if they don't break sooner, probably due for a change soon.

 

I bought nismo hub bolts, the 60mm variety.

 

So you didn't get the 350Z specific spacer from H&R? check that you get at least 5 turns (7 is better) on the 60mm bolts... IIRC they will be too short for a 20mm spacer w/stock wheel. Stock lug bolts are ~44mm in rear so you should only lose about 4mm..

 

I'm only using the 20mm spacers on the front. the H&R spacers came with bolts but I already had the nismo ones so the H&R bolts will be back up. They look to be the same size.