On a 12 year old vehicle it would not be unreasonable to expect that the shock absorbers are worn out.
Replace the shocks all the way around and your problem should go away. If you use this vehicle for highway use select the appropriate shocks.
Also, if you have increased the size of your tires you may need larger shocks. This is because you have increased the mass of the tires and rims and you would need larger shocks to handle this added mass.
Replace the shocks all the way around and your problem should go away. If you use this vehicle for highway use select the appropriate shocks.
Also, if you have increased the size of your tires you may need larger shocks. This is because you have increased the mass of the tires and rims and you would need larger shocks to handle this added mass.