A spare full-sized tire method

Discussion in 'Gen 4 Prius Accessories and Modifications' started by Mambo Dave, Mar 26, 2022.

  1. Mambo Dave

    Mambo Dave Active Member

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    In my two years here, I keep seeing questions about how to get this done. I've seen some use the OEM spare tire parts, with a donut spare, and some at a great cost when buying new.

    My goal was for cross-country trips where I don't want to have to wait a weekend for the correct sized hybrid tire, and where I won't necessarily have to limit myself to the recommended mileage max for those little spares.

    Bought a used full-sized wheel off of ebay, then bought a new full-sized tire.

    Bought stiff enough foam that I can load multiple 24-packs of canned drinks, etc. and not really notice the compression - but at the cost of it sitting a bit high when not loaded.

    [​IMG]

    Can't recall if this is 5" or 6" foam.

    A board across the front to prevent the foam from moving too much:

    [​IMG]

    [​IMG]

    There are two threaded holes built into the cross-brace, so that's all I had to use, but for its purposes it is absolutely fine:

    [​IMG]

    So preventing the jack, tire iron, etc. from becoming dangerous projectiles during a crash or rollover, I used velcro straps to secure those items to the wheel/tire. The whee/tire is, of course, bolted to the spare-tire threaded hole to keep it in place. This image should be rotated clockwise one quarter turn.

    [​IMG]

    Without gear on it, the top can sit proud. This is never an issue, though, as I always have enough gear to compress the foam to about the tire height.

    [​IMG]
     
    #1 Mambo Dave, Mar 26, 2022
    Last edited: Mar 26, 2022
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  2. bisco

    bisco cookie crumbler

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    well done, thanks!(y)
     
  3. PaulDM

    PaulDM Active Member

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    Have you thought about using a space saver? That would
    make the boot lie flat.
     
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  4. Mendel Leisk

    Mendel Leisk Underfoot

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    It is too bad they didn't make the spare tire well slightly more generous; it almost fits a full size wheel/tire.
     
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  5. PaulDM

    PaulDM Active Member

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    Agreed. If you have to use the space saver and put the full size in the space it lifts the base by 3-4 inches
     
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  6. Mendel Leisk

    Mendel Leisk Underfoot

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    I think it’s the OD that hangs up on the sidewalls of the well first. Not sure but other’n that maybe depth is ok. I recall seeing mention of full size spare in some owners manual. Might be 4th gen, and it was euro spec?
     
  7. PaulDM

    PaulDM Active Member

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    Both my gen 4’s have had a space saver even though the manual said full size for the 2019 (2020 states spec)
     
  8. Mambo Dave

    Mambo Dave Active Member

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    Not my experience with the 15" tire, OEM size, in the spare-tire hole. It's just too wide of a tire - meaning its width is the issue when laying down by increasing the height of the floor. The circumference is fine.
     
    #8 Mambo Dave, Mar 29, 2022
    Last edited: Mar 30, 2022
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  9. Mambo Dave

    Mambo Dave Active Member

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    So that extra padding became a boon this weekend. Rained-out tent camping had me use the rear of the Prius as an RV bed on Saturday night. I left the car running, AC on "Auto" to have the car self-regulate the engine and HVAC. I used a one-inch sleeping pad on top of it all, and got a better sleep than I did out in the hot and humid air the night before.
     
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  10. Mambo Dave

    Mambo Dave Active Member

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    I just realized I missed taking or uploading pictures of the tire/wheel securing method.
     
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