I checked my code under SPR this morning to see what I have. Alledgedly, there is supposed to be 2 "digits" uder this SPR.

I have BBFF under SPR, so I assume I have B bars. But why do I have 4 "digits"?

 

Yes, you have "B" bars. Ford started using the doubled characters (4 total) in 2004, I think. Who knows why....

 

Bob, if you don't know why, I don't know who would. Thanx for the confirmation too

 

what's the difference in bars?

 

The spring rate. 1's are the stiffest, F's are the weakest. It goes from B to 2 to 1 at the top end. I have B's which work pretty well with 35's with my relatively light 4x2 with a 3.0.

 

B - front right
B - Front left

F - Rear right
F - Rear left

thats my guess

 

That makes alot of sence. I used to spec out F350's with cranes on the right side bedbox. They would get stiffer springs on the right, and an adjusted alignment.

I wonder if, in fleet use, the Ranger is customized from the factory similarly...

 

i'd still want my vehicle to have the same spring rate side to side

 

The cranes we speced weighed 1,500 pounds, the spring rating needed to be adjusted...