Two days ago I had a pair of new Kumho Ecsta AST's put on the back. Since then, it seems like the rear end is floating around, especially when cornering, making it difficult to control. Anyone else experience this?

 

like, youre not getting much traction?

 

is the pressure correct? low or high?

could just be crappy tires with weak sidewalls.

 

Because those tires suck. One of the cheapest directional tires there is. You just bought crappy tires. You're feeling the sidewall flexing and bad traction. The compound used on the AST is pretty hard. Get a different set of tires.

 

Well, not really a traction issue, it just feels like the back tires have verry little air in them, but they're at 35psi. They grip well. I guess it could be the side wall issue as previously stated.