What's the limit on wheel spacers?

Sorry, my ignorance proceeds me. I don't know a thing about wheel spacers, but physics tells me that it's not a good idea. What is the current thought on wheel spacers, quality of spacers from one to another, and limit on how far one should/can safely poke out?

I bow down to the collective wisdom at TW.

 

1.25 is the golden standard because of these.

https://www.spidertrax.com/Toyota-Hub-Centric-Spacer?sc=2&category=9982

Many argue that it doesnt put any strain on the bearing, but I feel like the further away the mass is, the more strain is on it. So I'm in the 1.25" club. (with stockish or stock rims)

 

None is the limit for me. The way things are engineered to reduce costs today, it's amazing that wheel bearings and ball joints survive for as long as they do. I don't care to add accessories that reduce the life of my truck. Especially the ones that don't offer any improvement of performance or reliability. Wheel spacers fall directly into this category.

 

You know, after seeing how down right poorly engineered the OEM needle bearing was during my ECG bushing replacement, I completely agree with your reduced costs comment.

 

I thought the question was going to be about how far can wheels poke out before it starts to look stupid. And coincidentally, zero is the limit for that too.

 

I run 2" Amazon/china brand spacers with 37s just fine.

 

Freaking out the squares.

 

I've run 1.5" and beat the shit out of my truck jumping etc. Bumping it up to 2.5" bora for the rear soon since I got a long travel kit in the front

 

BORA makes a 0.75 inch spacer