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OEM spare tire install

Discussion in 'Gen 5 Prius Care, Maintenance and Troubleshooting' started by Hammersmith, May 31, 2023.

  1. Hammersmith

    Hammersmith Senior Member

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    It will not fit. Gen2/3/4 Priuses use a 5x100mm bolt pattern on the wheels. Gen5 uses a 5x114.3mm pattern. So you won't be able to even fit the wheel to the hub. Plus, the overall larger diameter of the gen5 tire to the previous gens means it would be a bad idea even if the bolt pattern was the same. This is why using a Prius v spare(5x114.3) is also a bad idea.

    BTW, if you have a spare from a gen2 and it's still the original tire, I wouldn't use that on anything at all. Tires have a limited lifespan. 5-7 years on a full sized tire being used; 7-10(pushing it) on a spare that's been protected from the elements/UV. An original gen2 tire would be a minimum of 15 years old by this point.
     
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  2. Gwyd

    Gwyd Member

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    Darn - oh well. I'm not going to worry about it then - I'll just call Toyo for a tow if something happens and the inflater goop doesn't work.

    I admire your dedication and ability to get yours in place!
     
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  3. daisy555

    daisy555 Senior Member

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    Thanks so much for this. I’m somewhat good at assembling things but I would be too afraid to mess with wiring. Are you saying there was no need to? Also everything can fit into place without cutting the new foam piece?

    Here goes my silly question. Is the deck board the piece that covers the spare tire to support the cargo floor? Of course I was hoping the new foam surrounding the tire would be gray or black. : }

    Does the spare tire affect your fuel economy?
    Thanks!
     
  4. Hammersmith

    Hammersmith Senior Member

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    51978-47010 - Protector, Spare Wheel

    Is now available in the US for those of us with AWD looking for a full OEM install. I'm currently waiting for my order to come in.
     
  5. Blackat

    Blackat Member

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    How much? I was going to order a spare online . And what is the protector? Just a cover?
     
  6. Hammersmith

    Hammersmith Senior Member

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    Arrrgh. Third attempt at this reply. Really hating how hard it is to upload files after the site update.

    $33.04 Protector, Spare Wheel Carrier

    It's just a smallish metal cover that goes over the HV connector that goes to the rear EV motor in AWD models. It's not really needed, but it makes for a complete OEM conversion for those of us that are sticklers for this sort of thing.

    I'd say the most important part of the conversion is the other Protector, Spare Wheel that's made of foam and sits under the tire. It's precisely molded to the sheet metal of the floor pan and formed to hold the tire level in the proper position. Everything else can either be modified from what already comes with the car or fairly easily sourced from a hardware story. I'm not saying you absolutely have to have it, but it makes the conversion much easier and neater.

    In case you missed it in early posts, here are the parts diagrams for the conversion. The metal protector is the bottom part in the first parts diagram.

    https://attachments.priuschat.com/attachment-files/2023/12/246545_Prius_Spare_Wheel_Carrier.pdf
    https://attachments.priuschat.com/attachment-files/2023/12/246546_Prius_Spare_Tire_Cargo_Conversion.pdf
    https://attachments.priuschat.com/attachment-files/2023/12/246547_Prius_Spare_Tire_Tools.pdf
     

    Attached Files:

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  7. Odin678

    Odin678 New Member

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    Thanks Hammersmith! I just ordered everything for the AWD XLE and it came to $490 with free shipping/current deals. Just wanted to comment and say I appreciate the write up.
     
  8. lohikaarme

    lohikaarme Active Member

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    Does anyone know the size of the nut?
     
  9. Hammersmith

    Hammersmith Senior Member

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    Looks to be an M6 x 1 flange nut(x3).

    According to Toyota's parts site, the most recent part number is 90178-A0132, but I'm sure a hardware store nut would be just fine. (preferably a flange nut, otherwise a nut and small washer)
     
  10. Mendel Leisk

    Mendel Leisk Senior Member

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  11. Jabog6

    Jabog6 Junior Member

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    This thread is very informative!
    Unfortunately for me, since I'm getting a Prime this coming week, it appears there's no way to install a spare in it? What do they do in countries where spare tires are required?
     
  12. Mendel Leisk

    Mendel Leisk Senior Member

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    The spare could easily be installed at the factory; the Owners Manual has a section showing how to use it, “if equipped”. The car body has the necessary cavity to hold the spare. The only impediment is Toyota.
     
  13. KMO

    KMO Senior Member

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    No, there's no provision or space for a spare tyre for the PHEV/Prime. (Ignore Mendel, he's so angry about the lack of spare tyres he can't read clearly - he's thinking of the HEV/non-Prime). The PHEV's on-board charger, solar roof system and and fuel tank intrude into the space where it could fit in the HEV.

    If there are countries where a spare tyre is required, then I guess they wouldn't be able to sell it there. Are there any? It seems the goop+compressor kit is sufficient in most places.
     
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  14. Jabog6

    Jabog6 Junior Member

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    Well, Mendel reminded me to look at the manual again... The Prius Prime user's manual I downloaded has two sections:
    page 483: "If you have a flat tire (vehicles without spare tire)
    Your vehicle is not equipped with a spare tire, but instead is equipped with an emergency tire puncture repair kit.
    page 495: "If you have a flat tire (vehicles with spare tire)
    Your vehicle is equipped with a spare tire. The flat tire can be replaced with the spare tire.
    This section includes images with where the spare would be mounted, the tools, etc.

    So, clearly it must be possible, right? Is it a question of doing what Hammersmith did and find the parts from overseas? I'm not sure where to look.
     
  15. Mendel Leisk

    Mendel Leisk Senior Member

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    Yeah missed that it’s Primes here. Still, please don’t presume to gauge my mood.

    Toyota could make an effort regarding all these intrusions. But doesn’t.

    and as long as buyers are complacent to buy their cars without spares, and cobble a spare install themselves, they’ll have no reason to change.
     
    #95 Mendel Leisk, Dec 17, 2023
    Last edited: Dec 17, 2023
  16. KMO

    KMO Senior Member

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    You're reading the non-Prime manual - those page numbers correspond to my US non-Prime copy. You're looking at pictures of non-Prime layouts.

    My US Prime manual has just page 574: "If you have a flat tire - Your vehicle is not equipped with a spare tire, but instead is equipped with an emergency tire puncture repair kit."

    There are four current layouts of the underfloor area you can create from Toyota parts:

    [​IMG]
    Type A-C are for the non-plugin; A (US LE) is the low floor, and B (US XLE, Ltd) and C (overseas, eg Mexico, or Japan option) use extra height. Type D is the only plugin option - it has to be high to go over the charger on the left and the higher fuel tank. (The right-hand tray gets shallower too if you have the solar roof).

    Toyota does not currently have any parts available to fit a spare tyre to a Prime anywhere. You'd have to go DIY, and it would make the floor even shallower. The non-Prime has a vaguely tyre-shaped floor recess ready for the tyre option, and nothing in the way. The Prime has a non-helpfully-shaped body and electrical bits exactly where the tyre would want to sit.
     
    #96 KMO, Dec 18, 2023
    Last edited: Dec 18, 2023
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  17. Jabog6

    Jabog6 Junior Member

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    Darn it. Right you are. I had downloaded both manuals and got that from the wrong one. Thanks for setting me straight.
     
  18. Mendel Leisk

    Mendel Leisk Senior Member

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    So Toyota has not supplied spares:

    with the reg 5th gen cus they’re cheap

    with the prime version cus they’re cheap, plus it would have involved a bit more design work

    customers who’d like to have something more than a hatch fulla styrofoam with their $40k purchase “can” shop elsewhere. This is the only thing that’ll wake them up.
     
    #98 Mendel Leisk, Dec 18, 2023
    Last edited: Dec 18, 2023
  19. Jabog6

    Jabog6 Junior Member

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    Yeah, choosing a car is always a compromise. I wish the Prime had a spare, but it checks other boxes for me.

    Statistically, though, in a few decades of owning cars (including 29 total years with Prius - 2009 and 2010 models), I've only had 2 flats, and both were minor and close to home. Fingers crossed.
     
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  20. Hammersmith

    Hammersmith Senior Member

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    The metal protector for the AWD power connector finally came in. Pretty hefty chunk of metal*. Still not certain it's really needed, but this last piece settles the completionist in me. :)

    *weight on the sticker says 0.9kg