Spare tire safety chain?

Hello all,
I recently replaced OEM tires and replaced the little eco spare that comes on the OR model. Now im worried that little 2mm thick chain may give out at some point since now ive modified this and with additional weight of the OEM full size tire.
Am I justified for being worried about my spare coming loose at 70mph?
Has the capacity and performance of that little chain been used for sometime without issue? What happens when we add 20lbs more weight on the spare, will it still hold?

 

It's not a bad worry but at the same time you don't want to have to deal with a secondary chain on the side of the road at 2 am.

I'm sure its ok and if you're worried, check it once a season for fatigue by dropping the tire.

 

You're about 3.5 hrs early for a great Friday thread.

 

I’d imagine you are fine. My SR5 has a full size spare.

 

yup, so does my sport...
something I will never use...

im sure its the same chain....

 

Is the chain smaller than the 3rd gen ? If it was me I would add a metal cable of some kind as an extra safety feature. Loop it through the rim and secure it to something under the truck that won’t give out . With a lock at the end .

 

It’s only holding 70lbs. Doesn’t take much chain to do that

 

Uhh...not so fast. A wheel hub can (reportedly) experience a 50g load when you hit a pot hole. The spare wheel won't see anything like that, but it will be more than 1.0.

 

Yes the g forces from dips, bumps and holes can increase the amount of load by several times. Im going to install a safety chain or cable this weekend and report back with photos in case anyone wishes to see what i did. Im surprised they didnt supply that little winch with braided cable.

 

Because it’s Friday -post #32
https://www.tacomaworld.com/threads/2025-fuckery-thread.849991/page-2

 

That really was a waste of time. In every way possible. I would rather have been rickrolled.

 

FYI: You can right-click on the post number and it has its own link you can copy, to take you directly to it.



That would have wasted us at least a little less time.

 

That’s the unsprung wheel. You never get even close to double digit Gs in the body of a truck even on the roughest road you can imagine. So call it 3 Gs when you absolutely crunch the truck.

doesn’t take much chain to hold 210lbs

 

Couldn’t you just go to depot/Lowe’s and buy a length of similarly sized chain with a rated break strength that exceeds your estimated needs and cut to length to replace the oem chain? Though I doubt it’d be an issue because as someone else pointed out, it’s possible to have a full size spare or remount the oem wheel + full size spare. I doubt Toyota has a different part# for the tire mount attachment for trucks with a full size spare…