Adding spacers and bigger tires on 2nd gen tundra

Hey everyone I'm trying to add spacers and wider tires onto my 2012 Tundra. I wanting to acquire a more aggressive look by making my Tundra wider. Im running aftermarket wheels 275/70/18 with 255/70/18 stretched tires. The tires are 8 inches wide and while being stretched over wider rims they still look thin. Just asking for some info about how big of spacers ill need and what tire I need to acquire to have good fitment.

 

Please clarify what tire size you currently have. We also need to know what wheel and offset you are running. Spacers won't work with certain offsets.....it would rub all.over the place. Those two tire sizes are also 10 inches wide.

 

My current tire size is 255/70/r18. And the rims offset im running is on my black rhino rims is +10. Oh I thought they were 8 inches wide.

 

https://www.tundras.com/threads/official-tundra-wheel-and-tire-setups-pics-and-info.95/#post-858