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aight so i am going to look into getting some new rims.....but here are the things i dont want. Maybe yall can help me out and tell me if i am correct in some of my thoughts.

1. I dont want to add a big heavy rim to my already SUPER FAST (sarcasm) car. I know that each company and style weigh the same thus i am thinking about going with a smaller size like a 15 instead of a 17, but i have no problem against 17 besides below.

2. The main thing i dont want is for my car to look like a weekend swamp buggy, i hate wheel gap, but i have no plans to drop the car in the future. Thus again assuming that a smaller rim 15 or 16 wont be bad,

assuming that i am mildly correct in my notion, what size rim would u say i want (15, 16, 17) also what tire size will look good, and not make the car have mad wheel gap, i really dislike the rubber band tires.

 
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Well considering that to keep your speedometer and odometer at least SEMI-accurate, if you don't want to deal with 40 or 45-series tires, then 16's will be your best option, as 15" looks too much like stock, and it looks like you want to buy rims to get away from the stock look anyway. So yeah, 16" is good plus they won't slow you down like a 17 or 18 inch rim will. Get a nice light rim too, like Rota Slipstreams or something.

 
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Nun to be completely honest .. your wheel gap isnt going to change from stock, or 17's or 16's or 15's ... Since the overall diameter of your new rims will be the same as the old stock rims.
Unless you start messing around with oversizing ... but that will just create alot of problems with rubbing and speedometer readings.

Look into some rims like Ro_Ja etc .. where 17's are super light ... you'll pay a pretty penny .. but it will be what you want. Although if your not lowering your car etc ... whats the whole deal on not slowing down an already slow car (that weight in reality wont make much of a difference ... unless you into racing/turbo;s/least weight etc ... which I dont believe you are)

Altho personally I'd rather leave it stock without a drop - because any upsized rim will look funny IMO.

 
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17's won't slow you down, but you just have to check the weight of the rims you're buying. I have 17" Tenzo R rims and they're only 17.9lbs each w/0 tire. I did a weight comparison with my stock steelies (without tires). The 17"s (even with tires on them) were a bunch lighter! And by getting either 16 or 17"s I suppose you're gonna get some performance tires with them, therefore you car should respond better than stock.

 
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^^ In Physics there is such a thing as Rotational Inertia, and it basically says...

the farther a weight is from the center of rotation the harder it is to get that weight to rotate.... meaning that as a rim size gets bigger the weight of it must drop in order for it to have the same Inertia as the smaller wheel...

For us, the stock 15" steel wheel weighs about 19LBS, for a 17 to equal it in inertia the 17 has to weigh some where in the range of 15LBS.

 
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But then when you add tires to a stock wheel it becomes even heaver (say a 195/65/15 in my case). Compared to a 205/40/17 wouldn't the stock wheel/tire outweigh my 17"s?

Oh and did you ever get my PM about my brakes? I had a question that I was hoping you would be able to answer.

 
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Yah but Rotational Inertia is not just affected by weight.

A larger rim, takes more effort for your car to move.

For instance take the same rim and tire combo.

One is a 17 inch rim with 215/45/17. The second is a 15" rim with 205/55/15 or whatever.
The 15 inch is easier to roll. Not just because of the weight difference but also because of the smaller rim = less rotational interia.
And from what I understand ... even if the 17 and 15 were the same weight ... the 17 is still harder to turn than the 15.

 
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i'm also interested to know which brand and model for the 16" or 17" wheel that dont weight too heavy......

 
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also any place that sells 16's for a good price with rubber? i have been to a few sites but the 17's are sometimes a better deal than the 15 and 16's

 
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http://www.wheelweights.net

http://www.wheelspecs.com/specs/