So, in hopes of paying it forward, here is some of what I learned from trying to piece together my own spare tire kit for my 2019.
First off, at least for 2019, all hybrid trims appear to come with the larger 12.3 inch front brake rotors based off the Honda specs
here under body/suspension/chassis. That means the hybrid, regardless of trim, takes the same spare tire and tool kit as the Sport trims and the 2.0T trim EX-L and Touring which is the 17inch rim with T135/80D17 tire. This way the spare can fit on either the front or rear axle. Up to you whether you drive with one on the front or not - I've done it for short distances before. I haven't checked the specs on the 2018 hybrid model but the front rotor sizing might be the same as 2019.
This is the first important matter to note as the majority of Accord spare tires from older models are the 16 inch rim. And before you go buying a spare from an Odyssey because the tire is the same size, the bolt pattern for the rim is different. Yes, they both use 5 lugs but the PCD of the Odyssey lugs is wider. You need a 17x4 rim with a 5x114.3mm (4.5") bolt pattern. Even if you find a spare from another make with those specs you still need to make sure the hub spacing is exact or you'll need a spacer if you don't want to damage the hub (or risk the tire wobbling). Unless you really know rim sizing (which I don't), you're better off sticking with the right size from Honda.
Tire:
T135/80D17 – can purchase for a little over $110 online from
Tire Rack and pay $10-20 to mount locally.
Rim:
As posted on here already, the rim is Disk, Wheel (17X4T) (Cmwa) – Product ID: 42700-T2A-L51. It can be found online for $82.52 plus hefty shipping. You are probably better off trying to get wholesale pricing at your local dealer - mine could special order it for $100.50 plus tax which was cheaper than online with shipping.
Buying Used:
As you can see, parting the tire and rim together will probably run you $250 or more. So you might want to look into used options. According to online parts sites, the same part number for the rim is compatible across the following Accords: 2019/2018 Sport and 2.0L models, 2017/2016 Sport and Touring. That means if you are searching used parts or eBay, those are the donor cars you are looking for.
Here are some examples of online listings available at the time of posting:
https://www.ebay.com/itm/2016-2017-...018-HONDA-ACCORD-SPARE-TIRE-WHEEL-DONUT-135-80-17-17-WITH-JACK-KIT/264332276034 - probably from a 2016, listed for $169 plus shipping (includes jack and tools, more on that later). Others have posted on here about purchasing from this eBay seller rv0761. I bought this also (more on that later).
https://ahparts.com/buy-used/2016-honda-accord-rim-17-spare-wheel-135-80-17-35-life/217823-1 - from a 2016, listed for $100 plus shipping (tire and rim only, no tools)
https://ahparts.com/buy-used/2018-h...-used/2018-honda-accord-wheel-rim-spare-tire-42700-t2a-l51-42700t2al51/258592-1 - from a 2018, call for price
https://offerup.com/item/detail/613432418/- possibly off a 2018, listed for $95 plus shipping (tire and rim only, no tools)
You can make lower offers on these used listings and see if you can drop the price. One caution with buying used is to take note of the condition and wear of the tire. Ideally the listing would have good photos so you can see the condition/wear and note the proper size. Also, if the photo is good enough - you might see the T2A stamp in the bolt pattern and maybe even the date code on the tire showing the week/year when the tire was made. A tire from a 2016 model would probably 2-3 years older than the tires on your 2018/2019. A fresher tire is better if you can find one like from the 2018 linked above. But even a 2016 tire in good condition will last many years in your trunk, not exposed to the elements.
You can also search the used car part interchange found here -
http://www.car-part.com/cgi-bin/search.cgi. You should search on a Honda Accord (pick a year from 2016/2017/2018) and select Wheel as the part and then pick the 17x4 steel wheel. That should give you a listing of local junkyards that show that part available and the 2016/2017/2018 model it came from. Even if you search on a 2016, you will get hits on a 2017 and 2018 since the part number is the same. You'll have to call to verify condition, stock and pricing. Maybe you'll find one close to you so you can inspect in person and avoid shipping. I only found places more than 200 miles away that would sell me one for $50-$75, but it didn't make sense with shipping. Also, you don't get to see photos ahead of time or get buyer protection like you do on eBay and other sites.
There is some risk with buying used so it is up to you to decide how much it is worth to save $ over buying new. I bought used and had the spared inspected and mounted by a local shop during the return period to make sure it was alright.
Now that you've got the tire and rim, it's time to get the tools.
Jack and Tools:
Adding to the parts list posted earlier in the thread, I noted the compatible models that these parts come from in case you want to find them used also. I also noted what the part is as some the descriptions are odd in my opinion. Prices were from Bernardi online before shipping and wholesale from my local dealer before tax. I shared Bernardi as they were the only that had reasonable shipping costs on the large foam box tool. As others have posted, you could buy that part locally to save on shipping and get the rest online for less if you want.
Box, Tool [foam insert to hold tools in spare rim] - only available in 2018 and 2019 Accord models
Product ID: 84542-TVA-A10 (be sure to get the right part number so it fits the 17 inch rim that it rests in)
$22.52 online/$32.75 local
Wrench, Wheel [lug wrench] - Widely used in 2008-19 Accord, 07-11 CRV, 03-11 Element, 03-08 Pilot
Product ID: 89211-S3V-A11
$8.46 online/$12.30 local
Jack Assembly, Pantograph [the jack] - 2018-19 Accord or 2005-2019 Odyssey
Product ID: 89310-SHJ-A01
$17.73 online/$25.78 local
Bar, Jack [handle used to turn jack] - Very common, Accord since 1988, Civic since 1990, etc.
Product ID: 89320-SE5-A01
$21.68 online/$31.53 local
Adapter, Spare Tire [insert for tire holder] - Accord, Civic, or CRV since 2008
Product ID: 74651-S2X-003
$4.88 online/$7.10 local
Bolt, Spare Tire [screw to hold down tire] - Accord or CRV since 2007
Product ID: 74652-SDA-003
$3.74 online/$5.45 local
Total Jack Kit with all parts: $95.55 online shipped (Bernardi)/$125 w/tax (local)
I will share some photos I took of OEM spare tire kits I took for reference purposes later on as well as share more on my eBay purchase.