ok, heres my question, the tires on the S2000 are staggered (205 front, 225 rear) yeah, no shit, so heres where i get confused
if i put rims on, the ones im looking at are 16X7, would those fit on front and rear if i kept the staggered set up? its confusing and i need some help

 

I currently use 16 X 7 rims all around with the stock sizes of snow tires mounted on them. I've used these for my 5th winter so far with no problems. However, snow tires are not performance tires and thus, I don't drive in such a manner even when the roads are dry.
This is what you are dealing with:
The OEM front rims are 6.5" wide, the rears being 7.5" wide. If you put a 205 tire on a 7" rim when it used to be meant for a 6.5" rim, you will pull the bead OUT by 1/2" - no big deal but you may have to bump up the pressure slightly to compensate for contact patch continuity. Similarly, if you put a 225 tire on a 7" rim when it used to be meant for a 7.5" rim, you "squeeze" the bead IN by 1/2" - again, no big deal but you may have to bleed a bit of pressure to maintain proper contact patch continuity. Pulling the bead out reduces the pressure the center of the tread puts on the ground. Squeezing the bead in puts more pressure the center of the tread puts on the ground.
Now comes the final consideration: When you reduce the tire pressure you lesson the rigidity of the sidewall (lateral tire performance worsens). When you increase the tire pressure, you increase the rigidity of the sidewall (ride quality worsens).
Are you willing to accept these compromises?

 

no, i just bought an s2000, there will be no compromises, theres gonna be perfection or nothing at all. would upgrading the fronts to 215 and the rears to 235 work out better? thanks for the help by the way

 

It'll be "better" for the front and even worse for the rear. If you want "perfection" (and I'm not so sure that many aftermarket rims will achieve this), then OEM sizing of rims and tires is the primary way to do it. Anything short of this will be a compromise to some degree.

 

damn, thanks for the information, im just going to look for aftermarket rims in the right sizes, which is gonna be really fun lol

 

Go to TireRack.com (they're a board sponsor) and target the S2000 and 16" rims. They will give you all the possible options they have and it'll even show the S2000 with the wheels on the car.
I would suggest that if you are going aftermarket wheels, go with 17" or maybe even 18". 17" is easy if you elect to go with the OEM '04 wheels. A couple of guys on this board have some for sale in the "For Sale" forum. This way, you get the "perfect" combination. However, if you decide to go with non OEM, then check out the group buy happening right now for Volk wheels. These are lighter than stock. You can investigate tire sizing for those as a separate quest once you come to a final decision.