I was dealing with bad throttle response and it ended up being because one tire was constantly low (around10psi[&:]). Got it fixed and it made all the difference.

 

This is a good reminder for everyone to check the pressure in their tires. All four of mine were at 20 lbs recently, but they looked fine. I put 'em up to 30 lbs. and the car handles like it should now (not to mention the uneven tire wear that comes from under-inflated tires).