Patent ID: 7870780

Claim:
A method for identifying vehicle wheels having low tire pressure, comprising the steps of: determining the number of revolutions of each wheel of a vehicle over a preselected driving distance; comparing said number of wheel revolutions crosswise by (i) summing said number of wheel revolutions of a first diagonal of opposite front right and rear left wheels and of a second diagonal of opposite front left and rear right wheels, and (ii) calculating a first difference between the sums of said number of wheel revolutions of said first and second diagonals; identifying at least one of said first and second diagonals as containing a wheel affected by low tire pressure based on the sign of said first difference; comparing said number of wheel revolutions of each side of said vehicle by (iii) summing said number of wheel revolutions of a first side of said front left and rear left wheels and of a second side of said front right and rear right wheels, and (iv) calculating a second difference between the sums of said number of wheel revolutions of said first and second sides; and identifying at least one of said first and second sides as containing a wheel affected by low tire pressure based on the sign of said second difference.