Leafspring (steertek)

depends on the truck the way it has been maintained with proper grease if there is any does it have bags in the front or not personaly i wouldn't say anything over 750K to be generous you loose a lot in ride quality besides this nothing else really if bushing or anything else go to #### you will know but spring itself would be around that with proper maintenance and normal driving not taking the truck off roading which happens a lot nowdays.

 

Nasriza is right on. At the age of your truck, you will notice a greatly improved ride if you are changing everything.

 

if you have airbags make sure your leveling valves are working properly i have had a few lately that do not adjust accordingly and the truck seems to hit once you hit a bump but it will stay spot on when you leave in on level ground just valves not doing proper adjust job causing truck to hit.