Lift questions

I put 1.5” Toy Tech blocks in the back of my 15TRD to level it because it had a spacer lift in the front when I bought it and 285/70/16 tires. Now it has a bad vibration between 0-20mph and between 50-60mph. I think I am going back to stock and wanted to know if you could just level the front if I went back down to 265’s and if so what size and the best kind. I like the lift now and tired but have no clue what could be wrong. Thank for all the help.

 

Try shims for the rear end 2 to 3 degrees to line the driveline angle back up. May also need the carrier bearing drop spacer

 

If your going back to stock or near stock you can go with a 265 w/o an issue. I personally like the falken wildpeak. If you stay where you’re at you probably need center carrier bearing spacer.