Ok,thanks don4331. My truck has a 84 axle which i guess is a standard 7.5" one.My truck has 4 leaves,including the short one at the bottom. It did have 5 leaves but i had one removed to improve the hard ride i get with it. lt did nothing for it at all. The rear tires are Uniroyal tiger paws,snow tires i believe. The front tires are Hercules mrx plus 1v. My truck has a/c but hasn't worked for a long time. My truck is a supercab with a short box and it's a 2.9 litre auto.
Glenny49:
Your interest in 4 cyl Rangers threw me off. But my response was better than it should have been: you need the whole package. I have 2 Rangers on driveway - one has no A/C, manual and payload pkg #1 while other has A/C, Auto and Payload pkg #2. As a result, there is over 500 lbs difference in GAWR on rear even though engines are same.
To your truck: Interesting - 4+1 leaves were never installed by Ford to my knowledge and certainly not with 7.5". There is an aftermarket pack made in that configuration with rating of 3,500 lbs - each of the 4 leaves being very thick. And thick leaves are known to be very stiff.
If you swap the pack for a 3 +1, you will enjoy a much smoother ride. The 2 +1, while lower in capacity, ride rougher as individual leaves are thicker.
The other "solution" is to "flip" the front spring mounts left for right, and mount them in forward/new holes leaving the original rear holes open. This allows you to run 64" Chev spring with axle still in OEM location, and lightest 1/2 springs, 2+1, are more/less same as Ranger's. The extra 6" of spring length makes for smoother ride. (hopefully, that made sense).
Up front, as you have the SuperCab with A/C, V-6 & auto, you will have the heaviest coils (or maybe one down as it shouldn't have the HD payload pack given the 7.5"). Again, finding a regular cab, with manual/without A/C would net you softest ride.
Note: Softer springs in front and back will have side effect of lowering your Ranger and taking away its functionality as a truck - not sure if you want that or not.
For tires, I was actually trying to find out if you had the stock size - I believe P215/70R14s for you combo or they had been replaced with something heavier, i.e. LT235/75R15s. Again, an LT tire rides much rougher than a P.