My new Hankook Ventus v12 Evo tires are very dull compared to the Michelins they replaced. I have never used a tire dressing and have read years ago that some of them actually damage the tire by hardening the side walls. What is the truth about tire dressings and are there better ones that protect the tire and last longer? I am not looking for super glossy, but a nice slightly glossy look would be much appreciated. Thanks.