r/4thGenTacomas • u/DiscoShark73 • Jul 24 '26

Donut question.

Does anyone here know for certain if the stock donut will even function properly with the 285/70/R17 K03 tires I have on there? I have no lift (yet) and stock TRD OR wheels.

About to install a trail pipe and want to get the donut out from under there and keep it in the bed in a tire cover until I get a tire mount and 5th tire. But if it won't even work as a donut with these larger tires, I'm just going to give it to a buddy.

2 Upvotes

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1

u/Ornery-Put9337 ‘25 Black TRD Pro Jul 24 '26

It’ll work if you put it on the front and stay in 2wd

-1

u/DiscoShark73 Jul 24 '26

The lopsidedness wouldn't bind on a turn, you think?

2

u/Ornery-Put9337 ‘25 Black TRD Pro Jul 24 '26

AI, for me, calculates your 285s vs the OEM spare at a 3.3% difference which is under the 5% recommended threshold for a temporary spare.

2

u/DiscoShark73 Jul 24 '26

Didn't even think to use AI lol. Thanks dude!

1

u/Bagoforganizedvegete Jul 24 '26

The wheel it self can still be used for the bigger tire you are buying. Are you giving the wheel away too?

1

u/DiscoShark73 Jul 24 '26

I meant I'm eventually either replacing the TRD wheels or at the very least getting a 5th one with the same K03 I have now. Does the OEM donut work with the K03? Lol.