FYI & Help: Cadillac CTS Spare Won't Work - ZR-1 Net Registry Forums

tf95ZR1 · 05-09-2013

I decided to start a new thread instead of hijacking a past thread.
The problem: a spare tire if you run BIG brakes. Up front I have
C6 ZO6 calipers with Fiske 18" rims. Someone smarter than me
realized that if we get a flat tire, the 17" spare won't fit. Fix-a-Flat
won't work if the hole is in the sidewall.

It was said that a 2008-up Cadillac CTS 18 X 4 compact (donut)
spare tire will fit and work. Locating one was difficult since this spare
was only a CTS option. The CTS came with a repair kit including
a mini compressor.

I finally found a CTS spare in Texas. i tried it tonight and not even
close to clearing the front face of the caliper. Diameter is fine. I
would not only need a 1/2" spacer, but have to get longer wheel studs
all around. Anybody have any ideas? TIA!

PS: I asked for Fiske's help years ago and they were of no help.
Maybe now with new ownership I'll try again.

Pete · 05-09-2013

Hi Ted
What would be the problem going with longer studs and a spacer only for emergency.

1/2" doesn't really sound too bad.
I would say try it, buy one stud and some washers (1/2") for trial fit.
Just a thought.
Pete

tf95ZR1 · 05-09-2013

I hear you, Pete! It just sounds cleaner if I could find the correct
wheel. It must be possible as I have wheels that fit now.
And, I'd have to replace all 20 studs, plus would my current
lug nuts fit with longer studs on my wheels?

Z51JEFF · 05-09-2013

Quote:

Originally Posted by tf95ZR1

I hear you, Pete! It just sounds cleaner if I could find the correct
wheel. It must be possible as I have wheels that fit now.
And, I'd have to replace all 20 studs, plus would my current
lug nuts fit with longer studs on my wheels?

The lugs will work,open lugs but the lug covers might not go on the lug nut with the stud coming out the front side.You might be able to -dial in- a wheel stud and get the cover on the nut.Dial in meaning trim the stud until it will work with the cover and still be long enough to use a spacer.

WVZR-1 · 05-09-2013

Ted,

Several months ago I posted up I believe a solution to the spare and within minutes a "moderator" had messed with the snapshots, that PMO and I deleted the entire entry.

I have your solution, I've emailed you. You'll need no wheel studs.

-Dave

secondchance · 05-09-2013

Quote:

Originally Posted by WVZR-1

Ted,

Several months ago I posted up I believe a solution to the spare and within minutes a "moderator" had messed with the snapshots, that PMO and I deleted the entire entry.

I have your solution, I've emailed you. You'll need no wheel studs.

-Dave

Dave,

I am looking at same option since I'll be going to big brakes also. Can you share your solution?
Hope all is well!

XfireZ51 · 05-09-2013

Same issue here. I have been communicating w Randall Maddox at www.performancespare.com since they do spares for Camaro and CTS-V. These cost ~ $300. There is an alternative that can be found on the C6 forum and built for the Z06 but the price is over $900. One solution for the longer wheel studs is to use an adapter rather than spacer to push the wheel out. I had the opportunity to buy a GTO spare but it wouldn't work without a 3.5" spacer which I thought ridiculous. Could use a stock C6 18" wheel and just carry in hatch area
http://www.vettespare.com/ basically uses a C6 wheel narrowed for an 18" spare. However, the price is a lot more expensive than a tow and new tire IMO.
Also, looked at the ContiComfort kit to flats that are not sidewall damage.
I just may look for C6 wheel and tire just to have something for long trips. Maybe we could buy a set and split it up

.

Z51JEFF · 05-09-2013

If somebody didnt mind spending some money,why not get in touch with one of the wheel manufactures and have a wheel made,sure wouldnt cost anywhere close to $900.

-=Jeff=- · 05-09-2013

what about a wheel adapter and 5 extra lugs?

the adapter would bolt to the existing 5 wheel studs, then the wheel would bolt to 5 studs on the adapter

like this:

Not optimal but neither is a flat

tf95ZR1 · 05-09-2013

Quote:

Originally Posted by -=Jeff=-

what about a wheel adapter and 5 extra lugs?

the adapter would bolt to the existing 5 wheel studs, then the wheel would bolt to 5 studs on the adapter

like this:

Not optimal but neither is a flat

Yes, this style adaptor would work, I just thought the compact spare would
be a "drop in" kinda like a Fluidyne radiator (wink, wink, causin' some fun).

PS: I like "Not optimal but neither is a flat"

05-09-2013	#1
tf95ZR1 Join Date: Aug 2005 Location: Northridge, CA Posts: 1,461	FYI & Help: Cadillac CTS Spare Won't Work I decided to start a new thread instead of hijacking a past thread. The problem: a spare tire if you run BIG brakes. Up front I have C6 ZO6 calipers with Fiske 18" rims. Someone smarter than me realized that if we get a flat tire, the 17" spare won't fit. Fix-a-Flat won't work if the hole is in the sidewall. It was said that a 2008-up Cadillac CTS 18 X 4 compact (donut) spare tire will fit and work. Locating one was difficult since this spare was only a CTS option. The CTS came with a repair kit including a mini compressor. I finally found a CTS spare in Texas. i tried it tonight and not even close to clearing the front face of the caliper. Diameter is fine. I would not only need a 1/2" spacer, but have to get longer wheel studs all around. Anybody have any ideas? TIA! PS: I asked for Fiske's help years ago and they were of no help. Maybe now with new ownership I'll try again.

05-09-2013	#2
Pete Join Date: Dec 2003 Location: Chicagoland,IL Posts: 2,679	Re: FYI & Help: Cadillac CTS Spare Won't Work Hi Ted What would be the problem going with longer studs and a spacer only for emergency. 1/2" doesn't really sound too bad. I would say try it, buy one stud and some washers (1/2") for trial fit. Just a thought. Pete __________________ '91 #1635 PoloGreen 350 LT5 11.09 @ 129.27 11.04 @ 128.86 474RWHP 400RWTQ http://www.youtube.com/watch?v=SFNFOhGGlR4 http://www.youtube.com/watch?v=ZlRIOMwaDYY https://sites.google.com/site/peteszr1garage

05-09-2013	#3
tf95ZR1 Join Date: Aug 2005 Location: Northridge, CA Posts: 1,461	Re: FYI & Help: Cadillac CTS Spare Won't Work I hear you, Pete! It just sounds cleaner if I could find the correct wheel. It must be possible as I have wheels that fit now. And, I'd have to replace all 20 studs, plus would my current lug nuts fit with longer studs on my wheels?

05-09-2013	#5
WVZR-1 Join Date: Oct 2004 Posts: 1,890	Re: FYI & Help: Cadillac CTS Spare Won't Work Ted, Several months ago I posted up I believe a solution to the spare and within minutes a "moderator" had messed with the snapshots, that PMO and I deleted the entire entry. I have your solution, I've emailed you. You'll need no wheel studs. -Dave Last edited by WVZR-1; 05-09-2013 at 08:16 AM.

05-09-2013	#7
XfireZ51 Join Date: May 2007 Location: Chicagoland, IL Posts: 9,708	Re: FYI & Help: Cadillac CTS Spare Won't Work Same issue here. I have been communicating w Randall Maddox at www.performancespare.com since they do spares for Camaro and CTS-V. These cost ~ $300. There is an alternative that can be found on the C6 forum and built for the Z06 but the price is over $900. One solution for the longer wheel studs is to use an adapter rather than spacer to push the wheel out. I had the opportunity to buy a GTO spare but it wouldn't work without a 3.5" spacer which I thought ridiculous. Could use a stock C6 18" wheel and just carry in hatch area http://www.vettespare.com/ basically uses a C6 wheel narrowed for an 18" spare. However, the price is a lot more expensive than a tow and new tire IMO. Also, looked at the ContiComfort kit to flats that are not sidewall damage. I just may look for C6 wheel and tire just to have something for long trips. Maybe we could buy a set and split it up . __________________ [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

05-09-2013	#8
Z51JEFF Join Date: Dec 2007 Location: Fremont,Ca Posts: 3,078	Re: FYI & Help: Cadillac CTS Spare Won't Work If somebody didnt mind spending some money,why not get in touch with one of the wheel manufactures and have a wheel made,sure wouldnt cost anywhere close to $900.

05-09-2013	#9
-=Jeff=- Join Date: Jul 2007 Location: Bartlett, IL Posts: 7,169	Re: FYI & Help: Cadillac CTS Spare Won't Work what about a wheel adapter and 5 extra lugs? the adapter would bolt to the existing 5 wheel studs, then the wheel would bolt to 5 studs on the adapter like this: Not optimal but neither is a flat __________________ 1990 Corvette ZR-1 #1051 Watson Headers (2" Primary) - Flowmaster Cats - Borla Catback Late Model IH - Plenum Coilovers - 4.10s Custom Interior NCM Lifetime Member #978

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