The new white wall tires purchased last year for an old "classic" of mine have inferior whitewalls compared to any set purchased in the last 30yrs. The whitewalls just don't come up as white as I like. There is a Concours D" Elegance judging event coming up that will require a two hour drive to the event. I'll have road grime on the tires and need a quick cleaner that can be sprayed on and wiped off with amazing results...! Any suggestions welcome....TIA