[Jmcalhoun22]

I have a NON mrc car.

Originally Posted by BMR Suspension

The rate is the same as the old springs' working rate - 640 lb/in


yes, the drop is identical.


There is nothing wrong with out old springs, the dual rate design can make a little extra noise in some circumstances and we figured out a design change that allowed us to go 100% linear.

Do you have MRC or non MRC? We (and other spring manufacturers) have had a couple of instances where there has been a "floaty" feeling in the rear. We are working on a solution.


Our 2016 Camaro springs were never progressive. The old springs were a dual rate spring - 360/640. This design uses two spring rates for a specific reason. When you design a lowering spring, you have to look at load rating, spring rate, drop amount, and a few other perimeters that define the spring characteristics. One of those things is free height. This is important because when the suspension unloads, the spring can unseat if there isn't enough free height. With linear springs, it can be difficult to achieve the desired drop with the correct load rating, while maintaining enough free height to keep the spring seated with the wheels hanging. So a dual rate springs is an easy way to add free height, while keeping the working rate of the spring linear. The soft rate is low enough to completely compress at ride height, so the car only uses the heavier linear rate. They can be a bit noisy because the soft coils are in coil bind. This is why you see other companies use isolaters around every other coil. to reduce noise from coil-to-coil contact. We figured out a new design to eliminate the soft rate, keep the load rate the same, and have enough free height to keep the spring seated.

As for Jmcalhoun22's floaty feeling, it has nothing to do with our spring design. I assume he has an MRC car since the only time we have ever seen or heard of that kind of issue is with MRC. It is an issue we are working on a solution for, and it will most likely be sensor related.