Pneumatic tire with sealant layer

A pneumatic tire comprising:

• a reinforcing ply structure extending between a pair of annular bead portions;
• a pair of sidewalls, each sidewall located radially outward of one of the pair of bead portions;
• a tread radially outward from the reinforcing ply structure;
• a belt reinforcing structure located radially outward from the reinforcing ply structure and radially inward from the tread;
• and
• an innerliner structure extending along an inner surface of the reinforcing ply from a position adjacent one bead portion to a position adjacent the other bead portion, the innerliner structure comprising between ten and twenty layers alternating layers of rubber compound and sealant,
• the rubber compound layers and the sealant layers having graduated thicknesses that decrease as the layers move radially away from the tread.