Advice on 195/60/15 vs 185/60/15… need to buy today. (Hankook vs Goodyear)

[NuMystic]

In an older thread this was said about replacing the stock 185/60/15 tires:

Originally Posted by kimona

I would replace with these from discounttiredirect.com

http://www.discounttiredirect.com/di...w=false&cs=195

IMHO, the 195/60/15's make for a much better fitment on the Yaris... and the price is excellent with the rebates, plus free shipping!

Complete newcomer to the Yaris Sedan as well as tire fitting. Just found the above quote in a thread and have a couple of questions. (apologies in advance if they are "stupid" questions… have never dealt with any of this before)

1) If I go up from the 185 which came with my sedan to the 195 suggested, will they fit on the stock wheels I already have or do I need new ones to accommodate the different size.

2) The two front tires on the car are fantastic right now, but the two rears need replacing right away. I assume it wouldn't be wise to mix?

Is the improvement on the 195s significant enough that it's worth buying four new Hankooks even though I've got two tires with a of life still left on them?

If not, would it be okay to mix the two stock tires with two new Hankooks if I get the 185/60/15 instead of the recommended 195s?

Thanks so much for your insights!