Patent ID: 7513144
Filing Date: 2009-04-07
Classification: G01L

Abstract:
1. A pneumatic tire comprising a tread portion, a pair of bead portions, and a pair of sidewall portions, at least one of the sidewall portions provided with at least three strain sensors disposed at least three mounting positions, respectively, said at least three mounting positions arranged around the tire rotational axis at intervals in the tire circumferential direction, said at least three strain sensors oriented at angles θ with respect to tire radial directions at the respective mounting positions, wherein the orientation angle θ is defined as being a plus value when oriented towards one tire circumferential direction, and a minus value when oriented towards the other tire circumferential direction, wherein the orientation angles θ of at least two of said at least three strain sensors are different from one another and their difference(s) is(are) not less than 20 degrees in absolute value.