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Spare tire conversion reference thread

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43K views 132 replies 46 participants last post by  Ohiois350  
#1 · (Edited)
After recently converting my LE to add the spare, I put this together to hopefully save others some time digging through the other threads. Refer to this thread for additional discussion and pictures.

All of the required parts will cost around $650 (including wheel and tire). Additionally, you will need to have the tire mounted at a tire shop ($20-30).

This is a 2-3 hr DIY job if you are handy, however there are a couple of items you'll want to make sure you're comfortable with: seatbelts need to be removed and reinstalled (bolts need to be torqued properly), and some carpet needs to be cut (to install the jack). If you have the dealer install, expect to pay $400+ in labor.

Parts Required

1. Spare Tire Kit
Cost: $260
Part: 51900-08050xx, 51900-08060xx, 51900-08070xx, or 51900-08080xx, xx referring to the trim color - see post #2 for more details

This kit has all required parts, except for the wheel, tire, and some nuts. Includes: Trim panel, trim cover for tire, mounting bracket for tire, jack, jack cover, handles, lug nut wrench, and hardware (see attached photo from the install PDF)

The trim color options are B2, B3, C2, C3. For my base LE, the complete part number was 51900-08050B2. I think that all LE's use the same trim color, but you may want to call your dealer and provide the VIN to confirm. My door sticker says trim color FA10.

2. Jack Kit Nuts
Cost: $4
Part: 90176-06051 (order 4 of these)

Required to bolt the jack holder down to the floor. No idea why these are not included in the kit.

3. Spare Wheel
Cost: ~$260
Part: 42611-0R271

Note this shows unavailable on the official Toyota parts site, so either google around to buy direct from another dealer or ebay.

Other forum members have mentioned previous gen Sienna spare fits in the storage area, however a 3rd gen wheel did not work for me. There was some interference or a different offset preventing the wheel from sitting flush against the mounting hub. If you can find an older spare that does, this will save some dough, but ymmv.

4. Tire
Cost: ~$110
Size: 155/80R17

The stock brand is Falken, but anything will work. IE one option at Tirerack: FK-090 - SIZE: T155/80D17 / $107

Total: $650

When ordering, the easiest route seems to be at parts.toyota.com. Check several dealers in your area. Some charge MSRP ($300 for the kit), some are MSRP in-store, and not all offer local pickup for online. Do your dealer a favor and choose local pickup and not shipping. The box is gigantic.

Tldr, try to find a dealer that sells at discount with local pickup and you should not have any issues.

Install

Tools needed: Basic metric socket set and tools, torque wrench (to cover 30-50 ftlb), trim removal tool

See the attached PDF for instructions. It is pretty easy to follow. There were a couple of obvious items omitted: 2 brackets that hold the middle seat straps need to be removed, and transferring the trim piece in step 13 did not apply to my LE trim.

Overall, it's a fairly straightforward install. Cost-wise, the kit itself is actually a fair price considering what's included. Wheel+tire+mounting is actually the biggest expense at around $400. So, should you have the luxury of adding the $75 option from the factory, do it! (Of course, most did not have a choice)
 

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#62 ·
I can confirm the spare tire kit for a 2025 Limited AWD (with sunshade and no entertainment system) is 51900-08071-C5). It DOES NOT come with the tire/wheel. The kit is expensive $2100 (with discount too). I just got it installed at my dealership at no cost as I negotiated it on my sale in December (paid $400 extra for the car price for this spare tire). I initially thought the kit comes with the tire, but it doesn't. Now I have an extra panel and need to get rid of it (by selling?????)
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#65 ·
I really do like it as I use the Sienna mainly for road trips. It gives me peace of mind even though we have AAA. In all my years driving, I have had 2 instances in which my tire blew and the inflation kit would be useless for me. Whether to spend so much for the kit and spare tire is up to you. You need to ask yourself that question---where do you drive to mostly? And how comfortable are you knowing you don't have a donut spare tire. If mostly in city or urban centers, the inflation kit and AAA should do. If you drive a lot to remote places, I would get the spare+spare kit----or just a spare tire and put in the back of the van if you don't want to spend $2000 for the spare tire kit. Good luck. For my actual spare tire, I was able to get a used one (T155/80R17) off Marketplace for $50.
 
#66 ·
Did your kit (51900-08071-C5) come with the single cup holder? Did it pre-attached on the panel or come separately?
Mine kit came today without the cupholder (I thought it come in with one of the smaller boxes but it wasn't).
The local Toyota parts guy said that 100% the kit come without a cupholder. I'm using many photos as proof but no help.

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#68 ·
I have a 2024 XLE in Predawn Gray Mica exterior color. The Toyota Owners Site list the interior color as Grayscale. Toyota's spare tire conversion kit lists 3 gray options: Lt Gray, Cool Gray, and Neutral Warm Gray. Does anyone know which of these 3 options is the most appropriate one?
 
#74 ·
I purchased the 51900-08070-B2 spare kit for our 2024 Sienna XLE at the MSRP of $366.25. The parts guy said this has been superseded by a newer number and priced around $2K. This panel comes with the sunshade, which was not included with the original panel. Part number 65983-08030 appears to be the hanger hook for the shade, but it's unclear how it's attached. For those owners who's Sienna came with the rear sunshades, can some one provide a photo of how the hook is mounted. Thanks in advance!
 
#76 ·
Thanks. I'm actually looking for the hook(s) that the shade is attached to at the top of the window. After doing some further sleuthing, I believe the hook(s) are integrated into the top of the window itself. In any case, I may have to do some jury rigging to hold the shade up when or if it's ever used.
 
#77 ·
Throwing out an idea if the OEM part is difficult to obtain... There are a lot of accessory hooks and wire guides that use the 3M adhesive that might work.

You may also be able to find some part numbers out by looking at the exploded diagrams at parts.toyota.com

I would start by searching your part number and just going through all of the graphics. The website has changed a bit, it used to be where you could click on the part and it would take you to that part of the page to see the exact part number...

Good luck in your solution!
 
#92 ·
@Sienna.Guy did that whole calculation for the larger spare tire... Too much maths and brain use overload!

His video, along with all the videos on how to install the conversion kit made it clear that I didn't want to deal with any of it. Fortunately, my salesman had the allocation manager remove a bunch of crap options from the factory and port and they gave me paint protection film and the spare tire in the color I wanted.
 
#107 · (Edited)
I put the above 🔝 posted pics of donut spare in. :

đź”´ T145/85R18 Tire
18Ă—4 Aluminum Alloy Wheel 5Ă—114.3MM Bolt Pattern.
27.7" Diameter.
  • the cover fit tight except for the far lower left corner didn’t quite clip in - but it looks fine - doesn’t showthat it’s out a little.
on the plus side , its much closer to the original diameter of the stock tires