I want to purchase some new rims for my 99 maxima se.
Im thinking about buying 18's. I dont have a clue what offset, tire size, or rim width to get. Does anyone have any links they know of to explain anyone of these so i can have a better understanding of what to buy? Im mainly concerned about the offset.

I dont really plan on lowering my car, is this gonna look bad? I was thinking a smaller tire and a larger rim would look about the same as what i have now as far as wheel gap is concerned.

I dont really want to rely on the vendors advice and i would like to research this myself before buying.

Thanks.