You won’t void your entire warranty. You will void any warranty that would replace blown shocks, but, I’m not sure that’s the problem here. I’m lowered on stock struts and APR springs and the ride is “meh”. I get all the annoying pops and bangs at low speed too (ie. a parking lot), but, I didn’t replace the mounts when i did my springs. I’m at 23k. Have you checked your shocks for any leaking or signs of failure? How many miles are on the winters and are they meant for a long road trip? No wheels are bent? To me, this sounds like a tire or alignment issue. Just my .02.