I personally did not like the product. I aborted the matter after the first letter, and it cleaned laboriously. Why? About the optics can be argued - everyone feels good different ... therefore I would not comment on that, maybe I have not even done it right 100%. In my opinion, the product is not user-friendly. It is there on the cover and it is a relatively long rod (which is smeared to the brim with the color) it with the brush hairs. Dealing is therefore very uncaring and the flexible hair also very inaccurate. I do not personally was possible the Goodyear tires writing on reasonable reproduce long without smudging. The color could not convince myself that I could have imagined otherwise. Maybe I also have the tires not properly cleaned ... I vacillate between one and two stars - but opt for 2 because I can hammer out a sensible result would assume with a great deal of tact.