Im wondering if any one here has had a similar issue as this with H rated tires. I bought a set of my favorite tires from Tire Rack And had a shop put them on the car. They are OEM size General Altimax RT43 H speed rated. Tire Rack didn't have the T rated tires that I'v bought several times in the past for a variety of vehicles. All of which balanced out perfectly first time around. The counter guy at the shop (whos been there over 20years) all so praised the Altimax as one of the very best tires on the market today. The shop uses Hunter Road Force Elite balancing machines. Wade, the counter guy comes out and shows me a spec sheet with balancing results. 3 tires were in the mid 20's and one was 37. I never knew that tires had a numerical balance value! Wade said the one tire simply would not balance out good enough but "might" pull in after running it for a sort time. The vibe at 75 mph was way more than I could deal with so I had them order another H and that one balanced OK. Even at OK the car still has a very slight vibe at speed so I will re balance after a thousand miles. After a call to Tire Rack CS, they sent UPS out with a pre paid tag and I should get a full refund on the bad tire. After a little research, I find the speed rating on a H tire has a much tougher casing than the T's and even the rubber compound is different in addition to the fact that they will not last as long as the T's. Question is, has any one else had balance issues with H rated tires? This seems weird.