What is the Part Number and Wheel Size for a 2018 Prius Four Spare Tire??

Discussion in 'Gen 4 Prius Accessories and Modifications' started by ice9, Aug 7, 2019.

  1. ice9

    ice9 Active Member

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    There seems to be a lot of confusion on this subj, but my question is simple. What exactly is the OEM part number and wheel size for the spare tire provided with the 2018 Prius Four (w/o tire repair kit). I plan to retrofit the tire repair kit that came with my Prius Four, IAW lohikaarme's "Undeleting the spare tire from a 4" (or something similar to his approach). However, if at all possible, I would prefer to use the OEM spare for the gen 4 Prius and not a substitute. I have spent the last three hours looking for this data but have yet to find it - neither here, nor on Google - and I am sick of wading though promotionals.
     
  2. alanclarkeau

    alanclarkeau Senior Member

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    Sorry I don't know. BUT - there was also some discussion on the retrofitting of a full-size (15" I think") spare like in the Middle East. Just check that the foam etc is for the size you want. If I remember right, the foam etc for the full-size had to come from overseas though?

    If you just want a donut spare and foam - can you get it from a wrecked car?
     
  3. ice9

    ice9 Active Member

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    Thanx. Already tried that. None of the local junkyards here have Prius's.

    The foam and other installation materials can wait, and the rest of the accessories are readily available. Right now, I just need the correct donut. I'm pretty sure the one used with the 2018 Prius Four has a 17" wheel, but I haven't been able to confirm this.
     
  4. ice9

    ice9 Active Member

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    I found it: 125/70D17 98M. Posted on some other thread here, but I cannot find the link anymore. I ordered it on Saturday. Should get hear any day now.
     
  5. pianewman

    pianewman Member

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    Resurrecting an old thread: ice9: Was your search successful? I'm in the same situation, salvage yard has 16" or 17", and I need the correct one.
    What did you end up doing with the foam cover? Did you simply carve out the OEM?

    NEVER MIND: I'm going with the number you provided.
     
    #5 pianewman, Mar 3, 2020
    Last edited: Mar 3, 2020
  6. Mendel Leisk

    Mendel Leisk Senior Member

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    Either can be the "correct" one. The 16" was spec'd on 3rd gen, and 17" on 4th gen. It's a bit of a mystery why they changed, considering the stock tire/wheel is the same, for both gen's. The 16" is very close in outside diameter to stock 195/65R15. The 17" OTOH, is somewhat smaller OD?
     
  7. ice9

    ice9 Active Member

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    Yes. Entirely successful. Actually, I found the tire on ebay. I also ordered the three rear cargo deck foam inserts (foam "boxes") and spare tire retainer from a local dealer to complete the kit - lohikaarme kit

    Parts list follows:


    Spare Tire Storage Mod (see photos):

    Spare Tire Donut; T125/70D17 98M - Installed.
    Carrier (Spare Tire Retainer) Toyota P/N 51931-47010 - Installed.
    Box, deck floor LH Toyota P/N 64997-47050 - Installed.
    Box, deck floor RH Toyota P/N 64995-47040 - Installed.
    Box, deck floor (Center) Toyota P/N 64993-47090 - Installed.

    All part numbers are for installing a 17" donut in a gen4 prius. Part numbers shown above are what I ordered through the dealership and are correct.

    Sorry I didn't post it here. I started a new thread for my Prius camper and reported the spare tire kit there... ...I had forgotten about this thread unit you spoke up. Thanx for reminding me.

    I was planning to modify the three foam boxs listed above and carve out some additional storage space, but I still haven't decided how to go about it yet (working on other things right now).

    If you are interested in using a gen 4 Prius as a camper, one added benefit of installing this kit is that the installation eliminates the small step behind the rear seats so that the rear area is now level when the seats are down, and can now be used as a sleeping area. I just tried it this weekend with my cold weather sleeping bag... ...works great!
     

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    #7 ice9, Mar 3, 2020
    Last edited: Mar 3, 2020
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