Wheel spacers (Spidertrax)- Do they reduce wheel well clearance?

Do Spidertrax spacers reduce wheel well clearance and can they cause cab mount rubbing?
I did a CMC, installed 1.5" Spidertrax spacers and added 285/75/16's.
I have slight rubbing on the cab mount at the rear of the wheel well.
No rubbing on front of wheel well.

Running 2017 TRD Pro 16" wheels
Running SPC UCA. (D Setting)
Caster 3
Camber 0
Toe 0

No mud flaps
Wheel well plastics trimmed

tires- 285/75/16

 

Short answer: yes. Any wheel spacer/adapter will give you clearance from tire to UCAs or Shocks but will increase your scrub radius. That said you didn't tell us what wheels you're running.

Imagine being above your car and watching the wheel move as you turn the steering wheel. Now push that wheel outside of the wheel well an inch+ and imagine the same thing. You're going to rub on the edges that once made no contact.

OA