Misc. vibrations, seeking input

That's interesting

 

I saved this link from one of them , I can't remember off hand which , pretty good info here

http://www.4crawler.com/4x4/CheapTricks/Driveline-101.shtml

 

sub'd I have the take off vibe as well (around 15-20mph)

 

I would just try the CB drop first. That's the easiest and might fix the vibes. That fixed mine without having to use any axle shims.

 

So the CB drop definitely didn't hurt, I'd say there were a slight reduction in the 0-25mph vibes, maybe 25% at best, hoping its not just the placebo effect. It's made it tolerable enough for now.

I wan't given any documentation regarding the factory rear axle shims. It definitely happened at the plant and not the dealer, because I watched my truck come off the hauler and took delivery shortly after. Also the shims were painted together with the assembled OEM leaf pack, I noticed this during the AAL install.

I've ordered the digital protractor from Amazon that OP used, when it comes in I'll take some better measurements and probably order the ToyTec 3deg shims as well.

 

My 2013 had it too - completely stock. Took it to the dealer and they're going to perform the TSB next week. Although even they weren't totally convinced it would get rid of it. Tacoma gonna Tacoma me thinks.