how come people have told me to do 45 in the front and 40 in the back for profile,

i have 18in rims ,

i was looking at

225/45/18 F
245/40/18 R

also im getting coilovers, how much would i be able to lower it and will i roll the fenders?

anyone got a picture of rolled fenders? lol

 

Those sizes are way too tall. In those widths you'd want 225/40-18 and 245/35-18.

What are the offsets of the wheels you're looking at? That will determine what tire widths will fit and whether you need to roll or pull or run a lot of camber. See the first post in the wheel/tire fitment guide stickie for offsets that will work.

 

Search for "stagger".

 

The 45 in the front should be for 17" wheels. ZDan is correct fot the 18".
Depending on the width and the offset of the wheels you can go wider or narrower depending on what is needed.
If I can help let me know.

 

ZDAN is correct on sizes.

Why the numbers are different: The second number on a tire (40 or 35) is the aspect ratio, which is a percentage of the tread width. The front tread width is narrower so the side wall is a larger percentage of it. The back is wider, so it's smaller percentage.

 

yea your right but i just took my rim off and mine arent staggered so im just gonna get new rims , and good websites to go to? and any nice brands , and im not gonna spend to much money

 

^tire rack ftw!

 

Yes. Tire rack has a great selection. It is easy to tell offset and weight. Alot of other sites just tell you bolt pattern. Which sucks!