i guess it depends on your purpose. if your wheelin, and rock crawlin you want that flex, ya the springs will go way past flat. that's the idea. and yes, they won't last. when i go on a good hard weekend of crawlin, the jeep is probably 1/2 inch shorter each time. i used to replace springs every year or two. back in those days they had lifetime warranties, i think i got a couple sets of sky jackers free. i don't know if they still are.