dmt257, what are you trying to do? You want a better ride or better gripping? Better gripping is a tire issue, look for a better tire for the condition you have problems. You want it to handle better? Thats a larger wheel. I did both, larger wheel thats ten lbs lighter 1.5 inches wider and a slightly taller and wider tire. by 10mm wider half an inch taller.
185 65 r15
What tire psi are you using? Try going up to sidewall psi or down to door jam psi. Im running 5 less than sidewall psi and it rocks. 40 psi. Slap on some sport springs and it gets better for cornering. The Teins(SP?) are only an inch drop and go for 140 on amazon.
Other than adjusting your tire psi, try a rotation and or balance. I did that to my sidekick and it helped its feel. I also did this at 20k miles on the insight between tire replacements and it helps and yes, the tires needed rebalancing.