Well, you're going to need alot more information before you get -any- answers.

Especially when we don't know what year your Altima is.

93-01 Altimas SE/GLE/GXE are 4.114

2002- 2007 Altimas 2.5/3.5/SE-R are 5-lug.

And if you're riding stock, a nice 19" rim would do nicely, but if you have plans on lowering it in the near future don't go anything aboe 18" or risk scrubbing.