Originally Posted by
wingracer
white is the gripiest of all but usually makes the car understeer badly even in low grip. Might be worth a try but yellow, pinks or magentas will probably be the ticket once you get a groove going.
In fact, white is so soft if the groove comes up at all, the sidewalls will flex and you will lose side bite, though you still get good forward bite. Yellow can have this problem as well, which is why the strip of gray is added to the outside of an Orange. You can also glue the edges with CA along the edge of the rim to prevent this.