IS rubber springs

[77cruiser]

How many have had to replace some of them?
I have 2 that look like they should be changed, probably only have 12000 miles.

[JoeUSNRET]

Cruiser, here is the guidance for determining when the shear springs should be replaced, from the LRE manual. I'm assuming the guidance would be the same for Independent Suspension (IS). My IS was installed in 2016 and are fine. Hope this helps.

"The shear springs should be periodically inspected for any tears or
cracks. If a shear spring exhibits a 3” long and 3/4” deep crack or tear, the shear spring should be replaced. This can be checked by using a flat tool such as a putty knife. The putty knife can be used to probe the shear spring in the affected area. If the knife can be inserted 3/4” deep, by at least 3” long, the spring rate of the spring is affected and should be replaced. Note: It is normal to see shear spring weather checking, which is small surface cracks in the rubber. Weather checking does not require a shear spring to be replaced."

[77cruiser]

Yup, that's what I did.

[DQDick]

We had one fail right from the factory, years ago, and then got over 80,000 miles on them before we traded the rig. Got over 20.000 on the set we have now so I suppose experiences vary.

[77cruiser]

2 0f them look like this.