Is 4.5" backspacing enough?

[shadow4]

Will I need wheel spacers?? Looking at wheels 16x8 with 4.5" backspacing. I will be putting on 285 75 16 Duratracs on them. Currently with the factory wheels/rims (16x7 with 265 70 16's) it looks like I will have enough space that it won't run on the upper control arm. Looks like I have about 1.25" of space between the two with the factory set up so I'm hoping that the extra 3/4" in tire width doesn't cause rubbing.

As a side note, I will be installing a 3" ultimate toytec lift before adding the tires/rims.

Thanks!

 

[4-Ripcord]

yes, 4.5 is enough.

 

[shadow4]

Sweet, thanks Ripcord! Heck of a nice 4runner build you have too!

 

[4-Ripcord]

thanks

 

[Gerdo]

The additional inch of width also moves that inner sidewall away from the UCA. The tire bulges less with the wider wheel.