Originally Posted by Granpa

The new generation S-Grip premounts are a lot softer than the old tires. For most it's instant traction roll if you don't cyano the sidewalls of the fronts. Some will cyano the rears also, but some don't.

If you feel the sidewalls, they fold right over with very little pressure. They also wear out much quicker than the old ones. Once properly treated with glue, they'll give you some good lap times.