Kniy93

Ok so ive scowered the internet looking for my answer and have not really found it...im running the stock 18" wheels on my 08 and plan to run 275/70/18 tires on my truck i didnt put a level/lift on it but from what i can see by looking at it someone else has because it sits high in the front for a chevy...my question is do i need like1-1.5" wheel spacers with these tires to prevent rubbing? im sure ill have to trim plastic but i dont want them rubbing on my control arms or anything and if i do put them on do i increase my chances of rubbing my fender or bumper?...if anyone has any insight id appreciate it thanks!