Anyone replaced their spare with a donut?

Discussion in 'Camaro Questions' started by Millwright, May 12, 2019.

  1. xten

    xten Veteran Member

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    My collector car insurance has towing and road service. Also a AAA member. Two spares! AAA is cheaper for the whole year than one tire, and covers all my cars.
     
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  2. 72BIGBLOCK

    72BIGBLOCK Veteran Member

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    I agree if you can deal with waiting an hour or two to get towed
     
  3. Millwright

    Millwright Member

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    I have roadside assistance through my insurance and 1 credit card. I am going to try to pick up a space saver so I have something with me. The full size is too big. Local scrap yards said $20-$25 if I can find one there. pretty cheap.
     
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  4. $ Mike 70 Z-28

    $ Mike 70 Z-28 Veteran Member

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    Twisted.. when you say close to size . How close???
     
  5. Twisted_Metal

    Twisted_Metal Administrator Staff Member Lifetime Gold Member

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    The closer the better.

    Any variation in overall diameter forces the Posi clutches to slip while driving straight.
    The greater the difference, the more slippage which builds heat in the rear end and wear on the clutches.

    You could get by with an inch difference at low speed for a few miles but a cross-country trip at freeway speed would be the equivalent of driving in a circle for hours.

    The diameter difference, speed and length of time of continuous slippage all plays a role in what it will tolerate.
     
  6. Gary S

    Gary S Administrator Lifetime Gold Member

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    If you have posi, put the spare on the front when needed and put two like tires on the rear. That is the #1 reason you want to run the same size tires on all 4 corners on a car.
     
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  7. Millwright

    Millwright Member

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    That is a good solution. A bit more work but reduces the risk of damaging the rear end.
     
  8. serpent710

    serpent710 Veteran Member

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    Anyone know the exact car or truck to use?
     
  9. Gary S

    Gary S Administrator Lifetime Gold Member

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    It depends on the size tires you currently have on the car. Like Twisted said, look for one of similar size.
     
  10. xten

    xten Veteran Member

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    If the plan is to keep a space saver spare, I wouldn't worry about it being older. UV is a major factor in deterioration, and most spares rarely see the light of day. Also, if like some, you run staggered aspect ratios (bigger rear than front), I would match the height of the rear tire as close as possible so you could use it on front or rear. Hopefully you won't be driving far on it.
     

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