Multiple pitch sequence optimization

A tire having a tread with a plurality of base pitches arranged in at least two separate circumferential sections around the circumference of the tire, the base pitches in each circumferential section having at least two different pitch lengths which form preselected pitch sequences about the circumference of the tire, the pitch sequence in each of the circumferential sections being arranged relative to each other according to the following technique:

• ##EQU3## Where:
• x=Distance around tire circumference stepped in preselected increments
• Circ.=Tire circumference
• ABS=Absolute Value
• YA=Pitch length in a pitch sequence A of a first circumferential section at a given x value
• YB=Pitch length in a pitch sequence B of a second circumferential section at a given x value
• Ydiff=Total difference between height of individual pitch sequence rectangle functions
• Where a higher Ydiff indicates better match,
• and the relative arrangement of the pitch sequences in the circumferential sections have the greatest Ydiff value compared to all other incremental stepped arrangements of pitch sequences for the tire tread.