don't know if wheels will fit

i'm looking to buy the pro comp 7089's 17x9 with a backspace of 4.75 and the offset is -6mm. i have a 3 inch lift on the truck right now and looking to run these wheels with 275/70/17 tires. i don't really understand the offset/backspace but need to know if these will fit

 

Welcome to TW Get 4.5 backspace it will position the inner rim of the wheel further away from your spindles also the tire away from the upper control arm, and if you ever want to move up to a 285 tire your good to go. I run 17x9 4.5 backspace kmc's.

here's some good info below

http://www.tacomaworld.com/forum/wheels-tires/102992-wheel-backspacing-offset-info.html

 

thanks! i ended up ordering the 17x8 with a 4.5 backspace so i should be good to go!