Are you for real? That's the second dumbest thing I've heard. Springs wear through cycles and over compression, and that's about it. Jacking up your car is ridiculous, and more likely to cause harm than any pitiful benefit it may have.
You are all entitled to your opinions but keep the rhetoric to yourselves.
The only way a spring is not affected is when being stored in it's natural state, if the spring is
compressed or elongated it will be affected. End of story.
To what extend well that is a topic for another discussion.
I will give an example, I have some shotguns that I collect, they are recoil operated and have large powerful
springs, assuming proper ammo is used about the only regular maintenance they need for proper functioning is replacing
the springs when they no longer function reliably and lubrication, I ordered new springs to keep as spares
and when I measure the new springs to the existing springs the new springs are longer, my guns have
minimum wear of collector grade quality and definitely not worn just sitting around, they are factory springs not aftermarket.
I am not suggesting that we dismantle our guns for storage but at a minimum I
uncock the cocking piece on the bolt which at times
represents up to 3/4 of compression on the firing pin spring, is it in it's natural state NO but 3/4 inch of compression is a lot on such
a short spring. If you keep your guns shooting every month I would not bother.
BB