C-5 Spare tire options ??
 

Hi,
I remember seeing somewhere that you can use a donut spare from A PONTIAC G6 OR GTO SOME time ago. I no longer remember the details or were I saw it here on the forum. Any information would be greatly appreciated. I would like to know if he same tire will fit front and rear? I somehow remember maybe can be done with some sort of spacer or adapter. Anyone ?
Thank you in advance for your help. :)

Thank you. What year gto and how did you enlarge the hole?

I also had to open up the hole in the hub to get it to slip onto my C5's hub. Mine came from a railcar load of GTO's wrecked in Blairstown, Iowa, back in 2005. :D

I used a DeWalt Coated Aluminum Oxide Mounted Flap Wheel...
https://cimg7.ibsrv.net/gimg/www.cor...49a4bfa296.png
Grainger carries them in a variety of sizes and widths. You don't need it wider than 1", and only slightly larger diameter than the hole opening. Just take it easy and don't be too aggressive. You want the wheel to just slip over the hub.

Good luck... GUSTO

I, too, carry a GTO spare only on long trips. While most people seem to have to slightly hollow out the center holes, I didn't have to do that on mine, as it fit fine on my Corvette. However, I had to very slightly hollow out the five "lug" holes, because the GTO spare apparently has a slightly different bolt pattern (probably metric versus English, I'm guessing) than the Corvette. I can't remember the year GTO from which my spare was sourced.

I also use a low scissor jack, and I carry a sturdy flat piece of wood to put under the jack, because one never knows whether it may be necessary to jack up the car in a soft dirt/muddy/sandy environment.

GTO wheels are 120mm PCD. Corvette wheels are 4.75" PCD, i.e. slightly larger, which means that a bending load gets applied to the studs when they are tightened. A C4 spare has the right PCD.

I'm Using Spare From Cadillac CTS
 

I have a 2011 Caddy CTS (not a V).
My research showed that this generation CTS bolt pattern should fit my C5.
I have 2 C5's, a street convertible and a Z06 modified for the track.
Bigger brakes totally reworked suspension.

Also, I run 18" wheels on all 4 corners on both my Vettes. I run a 285 X 30 X18
My CTS obviously has 18" wheels.
I tested the fit and spare fits perfectly-although on track Vette front I use 2 5/16" wheel spacers for spare to fit over the bigger brake calipers.
Yesterday was 1st time I needed to use the spare.
My front left wheel developed a crack on the track this past Sat.
I was able to borrow 2 tires from from someone at the track so I had matching tires on each axle although front and rears were different but they worked perfectly.
After the event I returned the borrowed tires (although he offered to let me use them to drive home) and put my CTS spare on the front. Had a 90 mile drive home mostly interstate.
Tried to keep my speed between 72- 75 so I would keep pace with traffic and not and exceed the tires capability-which by the way I had no idea what the even was.
I honestly was unable to even notice I had a donut spare on my left front.
I did not drive nearly as spirited as I normally would.but easily and comfortably kept pace with traffic and at times hit speeds in excess of 80-85 to get around congestion.
I was very pleased to find this spare handled very very well.

And as a side note do not use Chinese made wheels on a track car. I try and not use Chinese made stuff on anything.
Over the years I was buying up C5 Z06 wheels to use on both cars and have track tires mounted for the track and street tires mounted on my C5 convertible(same size tires on both cars)
I did not pay attention to where they were made. The OEM wheels are Speed Line and made in Italy. I've had no issues with them at all.
But a few weeks ago after a few days at Watkins Glen (I no longer trailer my car to the track-I drive it there and hopefully back) after returning home the following morning I saw I had a flat on left rear.
Took tire off and could not find anything-dropped it at my tire shop-they called and told me wheel had a hairline crack where 1 of spokes met the rim.
When I examined the wheel more closely, I saw Made In China. I started looking at origin of my other wheels. For the most part I'm trying to use the Chinese wheels only on my street car till I can replace them with non-Chinese wheels. But a few track tires are still mounted on Chinese wheels. I check my wheels fairly closely before, during and after each track event.
Towards end of day on Sat I'm looking at my wheels and I use a flashlight even in the daytime.
I noticed what looked like a hair stuck to my left front wheel where the spoke met the hub.
I sprayed whatever I had handy on it (windex) I could immediately see the air bubbling out.
My plan is to replace all my wheels including street with non-Chinese wheels.
But, for now I think it's safe to use the Chinese wheels on the street.

C-5 Spare Tire Options
 

I have a C-5 and found a website that sells spare tire kits. I was quite impressed when I received mine. Well worth the money. Designed to work with 1997 to 2018 Corvettes, both front and rear tire sizes. Everything needed to change a tire. Website: modernspare.com

I checked out the site, stuff looks good but a bit pricey for what it is.
I got my CTS spare brand new for $99
Got a very low profile scissors jack for $12 bucks (my Z06 track Vette is very very low) that fits under my car with tire inflated but not if flat. Carry a 2ft long 8"x2" block of wood, driving flat tire onto the wood gives me ample clearance for the jack. After testing the 1 low profile scissors, I bought 3 more.
I had a 1/2 drive socket welded onto the end of the scissors jack so I can easily raise the jack with my breaker bar. I used to carry a small harbor freight floor jack with me but it takes up too much of my limited space in the Z06.
I do carry a floor jack in all my cars with ample trunk space. The others with limited space that use scissors jacks I had the same 1/2 drive socket welded onto all those scissors jacks. So far the only 2 times I had to use these was to help 2 other stranded motorists with flats who were waiting for road side service. In one case they never arrived and the other they canceled the tow after we'd gotten their spare on.

Amarillo, ever check out Bills Backyard Classic Cars?
An amazing private car collection.

50 MPH Max speed for Donut
 

The owners manuals for every car I have ever owned that had donut spares stated that they have a max speed of 50 MPH.

C5 Spare Option
 

Some C5 have 18' wheels in front and 19" wheels in the rear. Do you know whether the C4's spare would be usable for, say, 50 miles in a flat-tire emergency situation on the rear axle of a Corvette with a 19' wheel? Even the GTO spare was originally designed to be used with 17" wheels, I think.

C5 Spare
 

Here is what I did for my 2004 Z06.

https://www.corvetteforum.com/forums...ta-c5-z06.html

This has been mentioned before;

https://www.corvetteforum.com/forums...available.html

Here are their kits and mini spare;

https://modernspare.com/search-page/...vette&cfy=2001

https://modernspare.com/product/1997...eel-tire-only/

I've always wondered where do you put the wheel you take off when you put your spare on. Especially if you already have stuff in your trunk and have a passenger.