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I pulled out of my driveway and halfway down my street I ran over a screw. With my DD in the shop, I needed to get the tire down to Discount Tire - it's a tire warranty thing. So I used the donut out of my other Saturn and voila, it fit... mostly. It's about 4½” in diameter less than the tires on my Sky, but it worked. So they put the Sky on 4 floorjacks, fixed the flat and while there I had all 4 rebalanced and crossed.

 

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I pulled out of my driveway and halfway down my street I ran over a screw. With my DD in the shop, I needed to get the tire down to Discount Tire - it's a tire warranty thing. So I used the donut out of my other Saturn and voila, it fit... mostly. It's about 4½” in diameter less than the tires on my Sky, but it worked. So they put the Sky on 4 floorjacks, fixed the flat and while there I had all 4 rebalanced and crossed.

Not good for LSD cars. Here is a quote from tire rack:

Tire Rack AWD and LSD while using a donut spare tire


If a Temporary/Compact Spare tire is used in a driven-wheel position, any differences in tire revolutions per mile require the vehicle's driveline to compensate continuously, increasing heat, wear and the possibility of failure. This is especially true for four-wheel and all-wheel drive vehicles, as well as any vehicle equipped with a limited-slip differential.
 

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Not good for LSD cars. Here is a quote from tire rack:

Tire Rack AWD and LSD while using a donut spare tire


If a Temporary/Compact Spare tire is used in a driven-wheel position, any differences in tire revolutions per mile require the vehicle's driveline to compensate continuously, increasing heat, wear and the possibility of failure. This is especially true for four-wheel and all-wheel drive vehicles, as well as any vehicle equipped with a limited-slip differential.
Good advice, but does conjure up a few interesting scenarios... tight U turns, tight right turns, hitting a frozen patch and spinning one wheel and not the other, pulling in/out of your driveway, etc.

I just found it interesting that the donut off a 15 year old Saturn would fit my Sky.

When the tech at discount tire finished torquing all the lugs (manually), he picked up the donut and then went to the back of the Sky looking for a trunk release :lol:
 

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Good advice, but does conjure up a few interesting scenarios... tight U turns, tight right turns, hitting a frozen patch and spinning one wheel and not the other, pulling in/out of your driveway, etc.

I just found it interesting that the donut off a 15 year old Saturn would fit my Sky.

When the tech at discount tire finished torquing all the lugs (manually), he picked up the donut and then went to the back of the Sky looking for a trunk release :lol:
LOL...I can just see him wandering around the rear of the car lugging around the spare and scratching his head. Did you tell him the thing wouldn't fit in there anyway!? LOL

All the scenarios you bring up Sky_Pilot are exactly what the diff is for but usually you don't do those things for a few miles at a time. The diff works, then has a chance to cool off.

However, I don't think driving a few miles (I'm sure considering you live in Orange County in So Cal that you didn't have to drive 40 miles to the tire shop...) will hurt it. If it's city driving, every time he comes to a stop at a light the diff is cooling off. There's a lot of lights on side streets in So Cal. LOL
 

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LOL...I can just see him wandering around the rear of the car lugging around the spare and scratching his head. Did you tell him the thing wouldn't fit in there anyway!? LOL
I did, he ended up bagging it and setting it on the passenger seat.

All the scenarios you bring up Sky_Pilot are exactly what the diff is for but usually you don't do those things for a few miles at a time. The diff works, then has a chance to cool off.

However, I don't think driving a few miles (I'm sure considering you live in Orange County in So Cal that you didn't have to drive 40 miles to the tire shop...) will hurt it. If it's city driving, every time he comes to a stop at a light the diff is cooling off. There's a lot of lights on side streets in So Cal. LOL
It was about a mile and a half. Worst thing that happened was backing out of my driveway, my rear splash guard scraped the ground.
 

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I did, he ended up bagging it and setting it on the passenger seat.
Oh man, I would have opened it and let him fish around for a while trying to figure out how to put it in the gas tank. LOL

It was about a mile and a half. Worst thing that happened was backing out of my driveway, my rear splash guard scraped the ground.
Yea, that's not going to do anything to the diff...my autocrossing it on mile long course would be more torturous than that. LOL
 

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I pulled out of my driveway and halfway down my street I ran over a screw. With my DD in the shop, I needed to get the tire down to Discount Tire - it's a tire warranty thing. So I used the donut out of my other Saturn and voila, it fit... mostly. It's about 4½” in diameter less than the tires on my Sky, but it worked. So they put the Sky on 4 floorjacks, fixed the flat and while there I had all 4 rebalanced and crossed.

I had the same problem so I put a little bit larger screw in my tire so it only had a slow leak and drove it to the shop
 
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