I went about 2 months on svt struts that had 50k miles on them with roush springs before they completely blew (which doesn't mean I couldn't drive on them, which is what anyone that says svt struts + lowering springs are fine are doing). Roush is like the highest lowering spring. So 2 months w/ the least drop available. I imagine new struts will last a bit longer. So in 4 months.........
