These tires are worth their money. When you touch them, you will only laugh about the ones who have been shipped with the kit ;)
I bought the front and rear supersoft tires. The rear ones are even more softer so you should have more grip then enough ;)
One important thing: You need to use this tires with the ride rims. When you look at the tires, they will have only on one side the small "S1" Logo, this side needs to be facing outwards, otherwise the rim will not fit perfect!