Thanks Ravi_M!!! Regarding washing my car, I do it myself once a month using normal water and other days I just dust it using the duster. If its very dirty after any long drives, then I take it to 3M or any local guy. Never done it at FASS. Some time back when i was crossing a section of road where road work was going on, I got lot of black dots all around the car. Same as you, normal wash didn't help. Hence I took it to 3M and they were able to remove it through detailing. May you should find some good detailers Thanks 5u3zEr0!!! Yes, I totally agree with you that 3ST is the quietest tyres out there. I was on the highway couple of weeks back and the cabin noise was totally different and the ride quality was very comfy.