Ok when i buy my 18" Rims im going to have low pros and i have Ground Control coilovers if i leave the coilovers set teh way they are is it still going to LOOK lower because of the differnet size wheel?

 

man i got 18's on mine and they still look small compared to other tc's i see on here with the same size rims.

 

Maybe a little, but going to 18's will only get rid of about 1/2" of the wheel gap you have.

 

seriously man my rims look like 15 inch rims up close but far away they look bigger idk? its wierd though the rear ones look bigger whats the reason of that?

 

getting bigger wheels will not get rid of wheel gap. you will still need to lower your car.

 

Yea man thats why im gonna save up and later on buy the coil springs for a 2 inch drop it will look alot better i think these tc's come with a huge fender gap dont you think?

 

this guy knows what he's talking about
look at this diagram:

the "overall diameter" is the "section height" of the tire (the sidewall height) plus the "rim diameter". when you use an 18" wheel, the tires mounted on them have a "section height" (or sidewall height) that is smaller than when using a 17" wheel. the total height of the wheel and tire is nearly the same regardless of the rim size.

this is why some "racers" opt to use lightweight 15" or 16" wheels because rubber and air weighs less than metal. their section height (sidewall) is taller.

buying bigger diameter wheels will not close the wheel gap, you will just have shorter sidewall tires. you need shorter springs or coil overs.