pair hubcentric wheel spacers 30mm - ZR-1 Net Registry Forums

batchman · 12-30-2012

New, test fit only, believe to be H&R, bought from TireRack a few years ago. What you see is what I've got. These were not the answer for our setup but maybe you have something you would like to try.

Figuring $60 shipped continental US, obo. PayPal, check, whatever.

Best of the new year to you all,
- Jeff

WVZR-1 · 12-30-2012

I can't read the caliper in the 4th snapshot which would be the "wheel bore diameter". The bore of the adapter looks to be GM 70.3 so that would indicate the OD for the wheel bore might be an issue for a GM application using a GM/OE wheel. What is that dimension? You might confirm the 70.3 on the back-side of the adapter also.

batchman · 12-30-2012

Doh - downsizing seems to have hurt legibility - sorry 'bout that.

They do have a "GM" cast in, I'm not at home but will re-measure later.

Thanks/later,
- Jeff

XfireZ51 · 12-30-2012

BTW, they appear to be BOTH hub and wheel centric which is an important point.

WVZR-1 · 12-30-2012

Quote:

Originally Posted by XfireZ51

BTW, they appear to be BOTH hub and wheel centric which is an important point.

Hub centric to a GM hub (70.3) but wheel centric to what? That's the dimension I can't make out in the snapshot. The back-side isn't actually dimensioned but if you assume it's a consistent bore throughout the 70.3 holds up. Hub & wheel is important but the wheel-bore dimension is important to someone that's interested. It will certainly make them easier to sell for the OP if he knows for sure. They're quality pieces for sure and there's a slight taper on the hub/back-side similar to an OE wheel. That's not done on all spacers.

XfireZ51 · 12-30-2012

If you look at the pics closely you'll see that there is an inner chamfer on the adapter to center it onto the hub. Additionally there is an outer lip on the wheel side. This lip helps center the wheel onto the adapter. So the adapter is now centered onto the hub and the wheel centered onto the adapter maintaining concentricity of each component. The measurement for the wheel centric should be the same as a standard GM hub. It's made to mimic the hub for the wheel.

batchman · 12-31-2012

Just realized I did measure the hub side at about 70.6 or .7 (a little hard due to the clearance at the hub face vs the adjust knob on the caliper), and they do "nest". So that would seem to mean no 80mm centric here.

HTH for now,
- Jeff

Ronstar · 12-31-2012

Ever figure out if they are hub and wheel centric for corvette
wheels?

batchman · 01-01-2013

Appears I've ended last year with a twist. In my defense I'll point out it was maybe 5 years ago when we bought these, I bumped into and took 'em out last summer and took pics, then a couple months ago re-sized those to be post-ready, and just now I have gone back and re-confirmed the following:

They are Chevy bolt pattern both directions, 5x4.75".

They are centric on the GM hub, measuring 70.6 or so on the hub side.

The snout, or wheel side, is 81.7 or so. They do not fit in the clone A-mold I had handy. They do fit in my CCWs, which I do wish the spacers I wound up using would support (those are flat).

Thanks for the watchful eyes, folks - wouldn't want somebody winding up with the wrong thing.

Best of the new year to you all,
- Jeff

batchman · 01-14-2013

As it came up in discussion, I am happy to offer a refund less shipping if these do not work out for any buyer. So you can test something risking only the transport.

Thanks and regards,
- Jeff

12-30-2012	#2
WVZR-1 Join Date: Oct 2004 Posts: 1,890	Re: pair hubcentric wheel spacers 30mm I can't read the caliper in the 4th snapshot which would be the "wheel bore diameter". The bore of the adapter looks to be GM 70.3 so that would indicate the OD for the wheel bore might be an issue for a GM application using a GM/OE wheel. What is that dimension? You might confirm the 70.3 on the back-side of the adapter also.

12-30-2012	#3
batchman Join Date: Jun 2009 Location: I live at Devens, one run at a time Posts: 455	Re: pair hubcentric wheel spacers 30mm Doh - downsizing seems to have hurt legibility - sorry 'bout that. They do have a "GM" cast in, I'm not at home but will re-measure later. Thanks/later, - Jeff

12-30-2012	#4
XfireZ51 Join Date: May 2007 Location: Chicagoland, IL Posts: 9,708	Re: pair hubcentric wheel spacers 30mm BTW, they appear to be BOTH hub and wheel centric which is an important point. __________________ [SIGPIC][/SIGPIC]Former Membership Chairman Former ZR-1 Registry - BOD 1972 Corvette 4speed base Coupe SOLD long time ago 1984 Corvette Z-51/4+3 SOLD 1992 Corvette ZR-1 Aqua/Gray #474 SOLD 1992 Corvette ZR-1 Black Rose/Cognac #458 2014 Honda VFR Interceptor DX

12-30-2012	#6
XfireZ51 Join Date: May 2007 Location: Chicagoland, IL Posts: 9,708	Re: pair hubcentric wheel spacers 30mm If you look at the pics closely you'll see that there is an inner chamfer on the adapter to center it onto the hub. Additionally there is an outer lip on the wheel side. This lip helps center the wheel onto the adapter. So the adapter is now centered onto the hub and the wheel centered onto the adapter maintaining concentricity of each component. The measurement for the wheel centric should be the same as a standard GM hub. It's made to mimic the hub for the wheel. __________________ [SIGPIC][/SIGPIC]Former Membership Chairman Former ZR-1 Registry - BOD 1972 Corvette 4speed base Coupe SOLD long time ago 1984 Corvette Z-51/4+3 SOLD 1992 Corvette ZR-1 Aqua/Gray #474 SOLD 1992 Corvette ZR-1 Black Rose/Cognac #458 2014 Honda VFR Interceptor DX Last edited by XfireZ51; 12-30-2012 at 10:36 PM.

12-31-2012	#7
batchman Join Date: Jun 2009 Location: I live at Devens, one run at a time Posts: 455	Re: pair hubcentric wheel spacers 30mm Just realized I did measure the hub side at about 70.6 or .7 (a little hard due to the clearance at the hub face vs the adjust knob on the caliper), and they do "nest". So that would seem to mean no 80mm centric here. HTH for now, - Jeff __________________ [I]91 ZR-1 #1840, autocrossing in SCCA BSP. FIC S/S's DRM chip/Watson/Borla/lid/LW batt&headlights, springs, shocks, pads & lines, quick rack & Turn One, camber brace, 32/22mm sways, A/C halfway deleted 17x11 & 12 CCW's, 315 & 335 Hoosier A6s [/I]

12-31-2012	#8
Ronstar Join Date: Jul 2012 Location: Michigan Posts: 182	Re: pair hubcentric wheel spacers 30mm Ever figure out if they are hub and wheel centric for corvette wheels?

01-01-2013	#9
batchman Join Date: Jun 2009 Location: I live at Devens, one run at a time Posts: 455	Re: pair hubcentric wheel spacers 30mm Appears I've ended last year with a twist. In my defense I'll point out it was maybe 5 years ago when we bought these, I bumped into and took 'em out last summer and took pics, then a couple months ago re-sized those to be post-ready, and just now I have gone back and re-confirmed the following: They are Chevy bolt pattern both directions, 5x4.75". They are centric on the GM hub, measuring 70.6 or so on the hub side. The snout, or wheel side, is 81.7 or so. They do not fit in the clone A-mold I had handy. They do fit in my CCWs, which I do wish the spacers I wound up using would support (those are flat). Thanks for the watchful eyes, folks - wouldn't want somebody winding up with the wrong thing. Best of the new year to you all, - Jeff

01-14-2013	#10
batchman Join Date: Jun 2009 Location: I live at Devens, one run at a time Posts: 455	Re: pair hubcentric wheel spacers 30mm As it came up in discussion, I am happy to offer a refund less shipping if these do not work out for any buyer. So you can test something risking only the transport. Thanks and regards, - Jeff __________________ [I]91 ZR-1 #1840, autocrossing in SCCA BSP. FIC S/S's DRM chip/Watson/Borla/lid/LW batt&headlights, springs, shocks, pads & lines, quick rack & Turn One, camber brace, 32/22mm sways, A/C halfway deleted 17x11 & 12 CCW's, 315 & 335 Hoosier A6s [/I]