I had Turbo Lazer +4HRs on my old 5L. All four experienced failure. They told me it was my fault for driving too fast?! WTF - the tyres were speed rated for way beyond legal limits and they told me at Crappy Tire I would have had to have driven at those speed constantly for at least an hour to have deformed the tyres.
What a load of crap! I bought brand name tyres from the Wheel Rack and have never had a problem. And this time I have a "Z" speed rating.
I'd never let my car go into a Crappy Tire again. I go there for tools, small appliances and other such things. Those twits tried to void my warranty with no proof and in doing so lost a customer who's spent tens of thousands at other places instead.
Perhaps they should have just realized I had four defective tyres and given me some of that pro-rated warranty money back. Oh well, after those I picked up a set of Goodyear GT+4s that lasted years (same as Turbo Lazer +4's) with no "high-speed" delamination.