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In RollaMo's picture you can clearly see the groove I was talking about. The bolt has a tab that slide into that groove and holds it in the higher position. If you get a flat you would lower the front to the higher support level (which lowers it) and push up on the rear bolt and rotate it to let it down into the lower position. That will allow you to put a flat rear tire (wider on some models) in the carrier until you get it fixed or replaced. You have your bolt in the down position and the front in the upper position.
I just looked at the spare tire carrier on my own C4 convertible, and the BOTTOM of the carrier tray is at the same height as the TOP of the exhaust pipes that snake out from the rear axle area to the two mufflers on either side of the tire carrier. So, that carrier would need to drop a LOT to become the low point on the car, except of course on VERY steep driveway/street joins. How much does the carrier drop when the larger tire is carried versus the spare tire?
In Clifff Harris's picture you see a side shot of the front support. The picture shows it in the lower (upper notch) position. The lower notch at the bottom of the support is for the skinny spare. Measure the difference on your car or better yet drop it down and look. It won't hurt to check your spare. It is about 5-6 inches lower when carrying the full wheel/tire. A lot of people remove them altogether and rely on AAA to fix their flats. I think it gets noisier with it out so I keep my spare clean and inflated and hope I never need it. Been 17 years so far without using it but the day I remove it I know I'll get a flat. You can see in the pic that it is lower than the exhaust and you could catch it pulling in some drive ways.
In Clifff Harris's picture you see a side shot of the front support. The picture shows it in the lower (upper notch) position. The lower notch at the bottom of the support is for the skinny spare. Measure the difference on your car or better yet drop it down and look. It won't hurt to check your spare. It is about 5-6 inches lower when carrying the full wheel/tire. A lot of people remove them altogether and rely on AAA to fix their flats. I think it gets noisier with it out so I keep my spare clean and inflated and hope I never need it. Been 17 years so far without using it but the day I remove it I know I'll get a flat. You can see in the pic that it is lower than the exhaust and you could catch it pulling in some drive ways.
It wasn't really intended to carry a full size spare.
The intent was to hold your "flat" tire that you just changed, until you could get to a shop.
That is what the two different locations are for on the front mounting.
I had the same problem after inspecting and cleaning the spare on my 96'. The bolt has a metal tab on it that catches in a grove up above where it hangs out of. I loosened the whole thing again and pushed up on the bolt and rotated it so the tab hooked in a grove towards the front of the car. This causes it to catch and stay up higher which eliminated the lower gap problem.
This In the below pic you can see what/how the bolt fits into the groove mentioned above....
Close ups...
This is a pic with the bolt out of the groove as though you were going to place a flat (full size) tire in the carrier...
Last edited by 96GS#007; Aug 30, 2013 at 11:26 PM.
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