I am looking at doing the lift thing with SAW Coilovers up front and Downey Coils/HD Bils in the rear. After the lift I plan on running 285/75-16 BFGs. How important is it that I do a gear swap? From what I have read here and on OutdoorWire I understand I am going to lose some power by running the bigger tires. How much am I going to lose? Is it going to even be noticeable with my S/C? I don't know if it makes a difference but this is my daily driver.

Thanks for the help.

 

I am no expert, but I personally don't think you'll see much of a power loss from it, simply because your 4Runner is supercharged. However if you go with new gearing, you will probably notice a significant increase in power and performance..