285/75/16 on Spare

Looked into different forums but can't seem to find a clear answer to:

I am running 285/70/17s right now (SCS Ray 10s) and I am wondering if I can use or a buy an extra stock spare and put 285/75/16s as my 5th wheel. Will this cause any stress to my truck if I decide to continue to wheel with the spare, even though its technically still "33s"?

What I know so far:

1. I can use my stock spare (not upgraded) w/ OEM lugs and it'll be fine for a bit (not for off-roading)
2. SCS Ray 10s 17x8.5 5th wheel would be better but its out of stock....
3. Can the weight be an issue because of the other 3 wheels?
4. The big question: Can i do donuts with that upgraded 5th wheel?

 

Look for a spare 17” off someone else, get the same size tire and then swap to the 17” ray 10 when it’s available.

 

Also, check the blemish wheels page. There’s a gold ray ten and some other 17x8.5 spec (not sure on your offset) wheels up now.

https://www.tacomaworld.com/threads/scs-blemished-wheels.264466/