2022 Prime donut

It should fit the car, but does the Prime have a place to store it? I do not recall any Prime trims coming with a donut spare.another option might be to get one from a junkyard Prius Two or Three.

 

On a Prime; no place to store it. That's why I got a full size spare - I can roll as fast and as long as I want.
On the plus side; I believe the gen4 still has the tire changing equipment on-board; but check to make sure.......

Good Luck.....

 

If your going to store it in the trunk, make sure it's tied-down. You don't want it to become a missile, in an accident.
I only toss mine in on road trips. I'm not worried about flats locally, of which I've had two on the OEM rubber. I've went with heavier, thicker tires with my replacements n took a 4-mpg hit. Still averaging well over 70 mpg, but no flats since. I did pull a nail out last week, that didn't penetrate.

FWIW: there's a two inch diameter differential from OEM, which may set off your traction control. You'll definitely set off your TPMS. You may have to turn-off traction control with this tire mounted. You may want to put a note with your tire change tools to remind you.
Tire Size Comparison

 

You're saying between the stock 15" tire, and the temp spare? From Owner's Manual:

Plugging the two sizes in at Tire Size Comparison site, it's 1.1" diff, on diameter, or .55" diff on radius.

Plus, the temp spare size is spec'd by Toyota; I think they would have checked if the diff is enough to set off traction control.

FWIW, Gen 3 has the same stock tire size, but the temp spare is 16", with OD virtually the same as stock. Not sure why they would revise for 4th gen.

 

I went by the numbers he published. Two inch differential - he may have published the wrong size.

 

Maybe the “16” is a typo? Can you contact seller?

The elephant in the room for me in all this: Toyota. The only thing that’ll get through to them is a boycott of their ill equipped vehicles.

incidentally: the aforementioned third gen temp spare is also compatible, and its od quite close. Except used ones for sale could be 15+ years old. Size is:

T135/80D16 101M



I guess that’s the case in spades for me, my 10’s build-date was August ‘09. That said, it looks pristine. I toyed with replacing the tire, but our goto place (Kal Tire) say they don’t deal with temp spare replacement tires. No further explanation, perhaps their equipment can’t deal with them, no clue.

This page has new gen 3 temp spare rim for sale:

https://www.amayama.com/en/genuine-catalogs/epc/toyota-japan/prius/ZVW30/226646/chassis/4103

As often as not they’re cheapest option for me, all-in with shipping. So never charged taxes or “duty” either. Even if they’re not, good source for part nos.

they show late year gen 4 temp spare too, use car’s frame no to categorize (on driver door jam decal). Again though, id opt for gen 3 setup.

then get tire in the States, say from TireTack, or local place (if more on the ball than my Kal Tire…).

 

Deleted, info tacked onto my previous post.

 

What I did was buy a new steel rim; 15' 5x100mm for my car. Kept the best out of the 4 old tires w/o a hole in it. Had it mounted and balanced - instant spare. The rim cost me $65.
If you stop by your local junk yard and ask them for a gen3 or corolla tire on a rim; it'll probably cost you $75. I'd probably mount that tire in their parking lot, to make sure it fits properly; it's a 5x100mm bolt pattern.

Good Luck.....

 

Taking the first 3rd gen temp spare rim part no from amayama (post #9 link):

42611-20840

and pasting it into a google search, this is one canadian hit for me:

https://parts.brantfordtoyota.ca/oem-parts/toyota-wheel-spare-4261120a50?srsltid=AfmBOoqYF60Wf0Wm7CD3Vh5FtA7xWb_sZTXUDTZQPSCL4APEElCVyiSR

$89 CDN, from an Ontario dealership

And going to Toyota USA parts site, plugging in that part no, and spec'ing 90210 for area code (hey I remember it), first result has it for $78 USD:

Disc Wheel #42611-20A50 | Autoparts.toyota.com

Then, plugging the 3rd gen temp spare tire size:

T135/80D16 101M

in at TireRack, and entering the same 90210 zip code:

https://www.tirerack.com/tires/TireSearchResults.jsp?zip-code=90210&width=135/&ratio=80&diameter=16&rearWidth=255/&rearRatio=40&rearDiameter=17&performance=ALL

^ The $103 USD Yokohama option looks most comparable to the original I think.

Rough USD summary of the above US purchases, plus guestimate for mounting:

 

I also bought the emergency spare wheel.
In my Prime I have 15 rims and I bought a spare rim from a 2000 Prius 2G size 125/70/16 low model, yellow color to be clear.
To avoid electronic problems due to traction control for a different diameter, you can do this:
If you puncture a tire on the front axle, move a rim from the rear axle to the front axle and put the emergency wheel on the rear axle.

 

Does owners manual say anything about this?

 

No, not even in my Prime for the Italian market does the user manual say anything about the spare wheel. It only says that the vehicle does not have a spare wheel and to use the puncture kit to repair it. All this is nonsense because often the tire gets cut and the kit supplied does not repair the damage.
However, since the diameter of the rims is different, it would be better if the tires on the front axle were the same, since there is a gearbox and differential.

 

On Prius with a spare Toyota says nothing about the spare needing to be on rear wheels. Note also, the rim sizes may be different, but the outside diameter of the spare is (sensibly) close enough to stock tire size that there shouldn't be a problem.

 

Placing the same size tires up front is much safer than operating it with two different size tires up front.
1. emergency braking: due to the different tire foot prints - spare having a smaller foot print on the road, the car will pull aggressively to one side; if not spin the car around. Hopefully NOT into on coming traffic.
2. traction control: that ECU assumes same size tires and foot print on either side and will behave accordingly. Different size tires and foot print will most likely make it act unpredictably.
If you stick to the OEM recommendations regarding driving on the compact spare - your probably be OK. Has anyone read and remember that section of the OM manual?

Just my two cents

 

I have a temp spare in the cargo area 20 Prime. If gen 2,3,4 have the same tire size, any temp spare from those should work? As long as bolt circle is same, etc. I don’t know what size mine is I got it from ebay in 2021. It looks new. Have to look at it again for size. .

 

Gen 3 and 4 stock size is 195/65R15, but Gen 2 is 185/65R15.

Gen 3 and 4 temp spare sizes vary (inexplicably), gen 3 being closer in outside diameter to stock size.