2017 TRD Off Road now stock with an axle shim

Only the off roads had the shims at my dealers lot.
I think with the 2-1/4 inch lift I have in the rear, I will try some 2 or 3 degree shims.
plus the OME spacer I have in there now and some more drop washers if needed. I will check the drive shaft angles, which is a bit confusing to me.
I think it would be cool if members posted the lift heights at the rear and there solutions for how they solved vibrations. Mine are not horrible but, I would like to get this resolved. I did email Toyota care about the reason there in the 2017's, but have gotten no response yet.
Off subject track, but I have not had any other issues with the truck, and at 20,000 miles now.
I really like the Multi Terrain select, I keep it on the mud setting and when I climb my icy 300 foot long step driveway, the Taco spins all fours.

Diablo169, Dude that's a nice looking ride, you must be at 5 inches in the rear alone.

 

11/16 Build date. No shims, no vibrations or howling from my OR.

 

Did anyone ever figure out what degree shim is used?

 

Mine has the shim. 4/17 build date in San Antonio.

No vibration but very slight howl only detectable with the radio off.

The control arm bushings were installed from the factory.

 

I wish they had a part number.

 

No shims on my '17 trd sport, May '17 build. And I do have some driveline vibes on deceleration around 10 mph after doing a 2" lift

 

it looks like a 2 degree shim. i looked under a few off roads at my local dealer and ended up purchasing 2 degree shims. actually fixed the drive line vibration i had from 10-35 mph.

my truck is lifted on bilstein 6112/5160 with wheelers 3 leaf progressive aal. Also did the ECGS bushing swap, but still had vibrations. the 2 degree shim eliminated all my vibrations.

 

Mine built March 17, ACC in San Antonio, has the shims, no howl, but haven't added the 6112/5160s yet. Now I'm worried about doing it.

I can't imagine it would make a difference, but is there a difference between the effect on AC versus DC (San Antonio versus Baja builds)?

 

My A/C TRD OR A/T was built in Texas 10/16 and It has the shims. No diff howl with 7,800 miles.

 

Yeah, I'm wondering about the DC vs AC.

 

AC and DC short box has the same wheelbase and length.

 

I have a 2017 Sport 4x4 and it does not have stock shims. From previous Toyotas I've had (87, 99, 02), this is the first one that DOES NOT have a single piece driveshaft. I never had a second gen so I don't know if they also had a single piece driveshaft of the newer two segment style with a carrier bearing. My 2017 truck is not lifted (yet) and has no vibes. Depending on lift height, dudes are doing some combination of the following: ECGS bushing, diff drop, carrier bearing drop, rear axle shims. While the ECGS is a front end vibe fix, the rest all deal with the rear driveline itself. In the older trucks, a single long driveshaft and yoke seemed to be more resilient to changing from stock to lifted because of the longer length, the lift does not change the angles at the U-joints that much. Plus, there were only two U-joints which seems to create less issues with balancing/vibes. When Toyota switched to this two segment driveshaft and carrier bearing system, that's when it got annoyingly complicated. By anchoring at the carrier bearing midway under the vehicle, dropping the rear diff in the lift makes all of the angles much more severe when the back part of the driveshaft is so short between carrier bearing and rear diff. The various drops/spacers/shims are all just cheap attempts to straighten out a driveshaft that shouldn't be a two piece system in the first place. My conclusion is that all of these driveline vibrations are due to the more complicated physics of having a perfectly balanced two piece driveshaft versus a longer, stronger single piece driveshaft. Ideally, Toyota goes back to a single piece driveshaft in the future so there is less frustration on this topic. That said, if you can fix vibe issues with a few cheap shims here and there, it is way cheaper than a full driveshaft replacement, but if all else fails, I watched a TacomaBeast video last night where he got a new single piece driveshaft and deleted the carrier bearing so my theory may be coming true one truck at a time.