my rims are 20x8.5 with 45 offset, i want a spacer thats gonna make my tires barely stick out past the fenders for that aggressive look, when i look at my car directly from behind you cant see my tires at all .What do you suggest 15mm 25mm?

 

its gonna look funny if its your tires sticking out pass the fender. if you want that aggressive look your probably referring to "poke" where the lip of the rim sticks out pass the fender and the tire is tucking under the fender. if i were you i would just get wider rims to achieve that look.

 

Yea that's what I meant, but I like my rims for now, what size spacer is good for a noticeable difference to bring the rims further out

 

how low is your car. Do you want to roll you fenders. What size is your tires. I have a 20x8.5 +40 on my car. My car is lowered but not sure how much. My rear fenders are rolled and I am running a 15mm space for a +25 all around.

 

+10 is the most you can go safely without rolling your fenders if you are lowered 1" or more

+15 would be pretty flush but you would probably have to roll the fenders some

+20 you would def. need to roll the fenders and might need to add some neg camber

 

Make sure you buy quality hubcentric spacers...none of these $25 pep boys stuff.

I would also upgrade the studs...but that's just me. Personally I don't like spacers at all. They add a failure point I would prefer to avoid.