Q - What size wheels does my stock sedan have?
17" 5 spoke (03-04 Sport)
Front & Rear: 17"x7" (+45mm) (5x4.5 or 5x114.3) bolt pattern

17" 6 spoke (Sedan std)
Front & Rear: 17"x7" (+45mm)

17" 7 spoke (Sedan X)
Front and Rear 17x7" (+45)

18" 5 split spoke (05+ Sedan optional)
Front & Rear: 18"x7.5" (+45mm)

Q- What size wheels will fit on my sedan?
The most common upgrade is to 19" or 20" wheels.
You can run the same size all around or staggered where the rears are wider.
(*Caution - the sizes listed below are estimates and may still rub depending on camber and height of your car)
(*Caution - it is not good for the AWD system in the X model sedan to run staggered wheels unless you remove the AWD fuse)

For the same size, an 8.5" +35-40mm rim will fit all around.
For staggered the rear size can be up to a 9.5" +45mm before modification is required. You can run a 10 or 10.5" but it will need to be higher offset to clear the inner fender.

Many people shave or roll their rear fenders in order to fit a lower offset or wider wheel. With the rear fenders rolled you can fit a 10" +40mm wheel with a 275 tire and -.5 degrees of camber or more.

You can go with lower offsets and/or wider wheels if you add in more negative camber and run smaller tires but do this knowing you will wear out the tires faster. There have been members go with much lower offsets and very stretched tires/negative camber so don't take this as an absolute but more of the "normal" setup.