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Prior to my rear end swap to a Strange S60, I ran a hubcentric adapter on the rear to get the clearance I needed for my track wheels (C5 Z06 Speedlines).
I went with longer studs studs on the new rear so I can run a properly sized hubcentric spacer (not the full adapter with its own studs). The center bore on the Z06 wheels is advertised as 70.3. The spacers I picked up are advertised as a 70.3 centerbore also, however they all seem to be wider at the base of the lip. See picture below. The wheels don’t snug up cleanly to the spacer because of that slope at the bottom of the lip. Anyone know of a sponsor or other provider that makes these spacers with a smooth lip that will fit these wheels?
Thinking creatively I pondered the possibility of boring out the center of the wheels another mm or so, however as I read more it seems that has the possibility of going terribly wrong.
Anyone know of a place that sells these for our cars? Always have the option to get a machine shop to trim my existing spacers down so the fitment will work, however the quotes are coming in awfully high for a $30 set of spacers. Would rather just buy another set that was made properly.
What is the width of the tires you are running on your Speedlines? Plenty of people run these wheels with no spacer.
Currently a 305/35/18 on the rear, however it will range anywhere from 305 to 315 depending on the track tires I'm running at the time. I haven't taken the hammer to the car yet (I'd prefer to just run the spacer), so I'm likely leaving some clearance on the table there.
11-20-2018, 09:31 PM
C5 Z06 Speedlines + Spacer issue 
