[APLPIX]

The wider the tire, the better traction and grip. I would suggest you look into 215/45/17, the sidewall less but very common for upgraded size. You'll new need wheels though. You can put 195 on the stock wheels.

Oh yea for sure Henry, 215/45/17 on a 15" rim! :facepalm:

 

[APLPIX]

for example the stock size is around $110 per tire , firestone
205-60-15 is like $80
195-60-15 is like $90

that is the reason why Im worried about the size, benefit better grip, I had 215-45-17 on my last Altima, and were great, but with stock rims I dont know what possible size could fit,

205/60R15 is the next correct upsize. Sounds like a great deal when its cheaper than the stock size. With the benefit of more grip comes more rolling resistance than could affect gas mileage.