Suspension Tech General discussion of suspension for the Ford Ranger.

99 Ranger 4.0 rear springs

Old 02-11-2019
Thread Starter
Join Date: Feb 2018
Location: Wakefield, NE.
Posts: 23
99 Ranger 4.0 rear springs

My rear leafs appear to be worn out. I'm trying to decide between the 4 leaf pack rated at 1,250 lbs and the 5 leaf pack rated at 1,750 lbs. I'll be driving on the highway some but I will be driving on gravel a lot also. Generally I won't be hauling much weight but sometimes I might haul a 1000# for shorter distances. The OEM springs that are on there now are 3 leaf whereas the ones at Rock Auto are 4 or more.
Any input would be appreciated!
Old 02-11-2019
RF Veteran
iTrader: (1)
Join Date: Jan 2014
Location: Vancouver, BC
Posts: 12,191
Best setup for any pick up truck is soft leafs(light weight rating) and an overload leaf

For best power, steering, braking and general control you want all 4 wheels flat on the ground
Over sprung axle will cause a bad ride but will also cause weight to be lifted off that axle after a bump.

The spring rating needs to match weight on that axle so spring has something to push against, so it can act as a spring, absorb bumps, if spring rating is too high then you might as well just install a steel rod between axle and frame, spring can't act as a spring, when you hit a bump it just pushes up the weight like its not there, and wheels leave the road surface.

So spring rating you use should be for empty bed
An over load leaf doesn't touch the frame, until extra weight is added to the bed or trailer hitch, so you still have the 1/2 ton rating, or more, but better control when empty or half loaded

Cost is more but ride improvement and safety is worth it
Old 02-11-2019
cliffdog2004's Avatar
Join Date: Jul 2018
Location: Irvine
Posts: 327
^^^ +1 ^^^

The 5-leaf setup will make your teeth chatter during your times when you don't need that weight rating.
You will not like the non-maintained roads in your area with these. Ow.
Related Topics
Thread Starter
Last Post
2.9L & 3.0L V6 Tech
05-26-2018 03:40 AM
Suspension Tech
03-14-2014 10:17 AM
Suspension Tech
05-27-2011 03:36 PM
Suspension Tech
11-07-2009 02:50 PM
Suspension Tech
03-19-2006 01:12 PM

Thread Tools
Search this Thread
Quick Reply: 99 Ranger 4.0 rear springs

Contact Us - Sitemap - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to and affiliated sites.