Compression coil springs were made to be durable. If this answers your question, then yes, it is compression because of the type of springs it has.
-spring scales -the spring inside a pen -coil springs inside a mattress
The total number of springs in a mattress differs from mattress to mattress, but the important part of a mattress is not the number of coils, its the size of each coil. Higher quality mattresses tend to have thicker coils, which more firm mattresses tend to have smaller coils.
You are talking about the coil count here. Generally speaking, the more coil, the better it is. But today, the coil design and construction plays an important role as well. See the link to bestbedguide.com
A mattress made of solid foam, either memory foam or latex would bend the best. It is not advised to bend a mattress with open coil springs at all; pocket springs will bend better though it isn't ideal, especially not for prolonged periods.
First, get new shocks and struts...on that vehicle, not entirely sure, but probably struts in front and back, no shocks. Check for coil springs in rear. If rear springs are coil, then struts. If rear springs are leaf, then shocks. While you're at the parts store, rent or borrow a coil spring compression tool. You'll need to compress the coil springs to remove/reinstall new struts. Other than the compression tool, standard garage mechanics tools will do the job.
rear leaf front coil springs
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How do I install rear coil springs on a 1996 Camaro?
coil springs and independent suspension replaced leaf springs to give a better and smoother ride
Coil springs in the front, leaf springs in the rear.
A 2002 Jeep Wrangler has coil springs.
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