I have +2 inch shocks and springs front and rear. 2 years ago the rear air pump gave up in -30c weather and I had been planning on converting to coils in the back, I got a cheap chinese "medium load" coil conversion kit from a local shop in a hurry. The ride quality ended up being quite nice compared to the air bags.

now 2 years later the rear is sagging quite a bit. What rear springs are you guys running in the back and what kind of loads ratings should I be looking at?

DiscoEsko said:

The ride quality ended up being quite nice compared to the air bags.

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^^^ that's named cognitive dissonance, unless your SLS was not working well from the beginning ... though if you want something really good i recommend THESE but never expect to have the ride quality of one with air springs despite of your biased conclusion