Do I really need to put 4 snow tires on instead of just 2 on the front, 2010 hhr ls

 

Depends on the road conditions where you drive and your driving habits. If you only get medium snow that gets cleared well and quickly, All Season tires would work. If you are going to be doing a lot of driving in deep snow, yes. If it only snows occasionally, 4 snow tires can be hazardous to you, they are not good on dry pavement.

 

I bought four from NTB, mounted on my stock rims. They did good. My all seasons also did good. I was told if you take just the rims in they will mount just two.

 

I was told long ago that if you put just front snow tires on a front wheel drive car that the rear becomes unstable in the snow and tens to slide a round. never tried it but sounds posible.

 

I was always told that by having the same type of tires at all 4 corners helps with the handling and the stability of the vehicle. I have run Blizzaks on my 2009 HHR every winter since I bought it. We average 45+ inches of snow per year. I have had Blizzaks on my cars since 2000 and they make quite a difference in driving in snow and ice. I am getting a set for a 2010 Camaro my wife bought this past summer.