Ive had my stock tires replaced with the same size cooper zeon ltz and ive noticed after 2 years i feel every little bump in the road. The tires have less than 10,000 miles on them since i hardly drive my truck, its a 2005 with only 55,000 miles. Are these tires just that way to begin with or what? I hate the way it feels when i drive

 

You've just turned into Cinderella.





More likely: your tires have gotten hard from lack of driving.

 

I drive it everyday just only about 25 miles a day but it does sit for 2-3 days at a time some weeks. How can i loosen them up?

 

Can't really loosen them up, granted, tires will harden up after a while and will wear better.

 

Just a shot in the dark, but what do you have them at pressure-wise? If they're overinflated it can give a harsh ride...just throwing that out there

 

34 psi

 

I will also state that depending on the tires, being under inflated can cause ride quality issues. I know for a fact that I can feel when my tires need to be aired up. I keep mine at 45/40 fr/rr. Granted, mine have a max rating of 60. lol

 

Shocks can fail that way. Of the ten or so I've replaced, probably four had failed so they wouldn't compress.