I am on Viking CT6 175/65/14 on Myvi. It is a marked improvement over the old silverstone that i use to like. Noise levels are lower. The sound when you drive over puddles of water are also different. Steering does not pull much like silverstone.

I also use 185/60/14 tires on my RWD corolla. They are still the old cheap silverstones.

My preposition to you is, reduce your tire air pressure to increase the tire contact patch a little more. A lot of people like to over inflate.

If you pump 230-240, try 225 or go back to 220.

Just changed to another new set of same Viking again. The old one botak already. 

Overall really the quietest among the cheap tires. Very good improvement overall compared to silverstone. Thats why go back to it again. Used for 3 years and about 65000 km. Previouly only cost RM103. The latest price is RM142.