We have discussed this with several tire manufacturers and they all have said the same thing.  Tire construction (as it applies to sidewalls especially) becomes more critical the lower the section profile.  Many people do not know that the old school white letter tires use a solid white layer sandwiched into the sidewall that is squeezed outward through raised areas in the tire mold.  Then a cosmetic layer of black is applied to the surface white layer.  Finally a machine buffs away the black cosmetic layer only on the raised portions and that is how the white letter look is achieved.  On modern low profile, performance tires, there is not enough room to sandwich this solid white layer.   Further, the white layer is purely cosmetic, and therefore adds nothing the the strength and construction of the sidewall.  It seems our need for bigger brakes and higher tire performance demands have relegated this tire jewelry accent to the dustbin of history….  Until now!  TredWear has solved this problem with our special patented dual compound rubber used with a patented instant adhesive which together makes a real raised white letter tire out of any black naked doughnut.  Don’t struggle with tire lettering stencils or paint that will turn brown in a matter of days.  Order TredWear kits today and take back the past with a modern flair!