Evolution of my truck on 5100s (pics included for reference)

Stock TRD Sport Suspension


5100s on stock coils set at 1.75, stock leaf packs rear has Bilstein 4600s (tires are 265/70 17)


5100s on stock coils set at 1.75, TSB leaf packs, 5100s in the rear (led to rear sag, adding a rear bumper shortly after this didn't change it much, tires are 265/75 16)


5100s on 884 OME coils, Deaver AAL with TSB leaf packs and 5100s in the rear (tires are 265/75 16)

 

I'm just learning about all the suspension possibilities, but could you explain why adding the 5100's made the rear sag? Only difference I can really find is the 4600s are recommended for stock height but I know 5100s are fine all around. Surprised to see it sag though.

 

It wasn't the shocks that caused the sag, it was the new leaf springs installed by Toyota as part of the TSB (technical service bulletin).

 

Oh OK gotcha, that makes more sense. I was wondering what "TSB" leaf packs were, haha.

Truck looks good man!

 

Truck looks great! How would you say ride quality changed when you added the leaf in the back w/ TSB? Did it become a lot more rigid? Im especially curious with the bed empty.

My TSB is sagging and I'm planning on putting in a wheelers 1.5 AAL and 1 to 1.5" front lift.

 

I have about 150 lbs in my bed at all times, but it seems pretty smooth, had it on the highway today for the first time since the install, was very smooth all around when hitting seems in the road and going over over passes (was very conscious of all bumps and changes in the road), even hit a few speed bumps at speed (not on the highway obviously) and it was very smooth, not rigid or bouncy in the rear.

 

That's good to hear! I drive 90% road so want to keep things plush.

 

Yeah same here, pretty much 100% road, current set up is a lot smoother than the old one, even when it was new.

I was very impressed with the highway performance.