I have the spikes on my work truck and they don't fly out at freeway speeds you just can't take corners at Mach 1 or they will pull out.LOL!Nope, I think you can only go like X mph until the spikes fly out. There is no need in my mind for spikes, probably only ruin the roads.
I'm all for studdable tires/studless tires. I got a performance winter tire on another car, I thinking I should have gotten a true winter tire like the Ipikes.
I'm thinking of mounting some I Pikes w/spikes on my OE 18 wheels.