Pneumatic tire

A pneumatic tire, comprising:

• a carcass layer;
• a belt layer disposed on an outer side of the carcass layer in a radial direction;
• and
• a tread rubber disposed on an outer side of the belt layer in the radial direction,
• the carcass layer having a cord angle of 80° or more and 100° or less with respect to a tire circumferential direction,
• the belt layer being formed by layering a first reinforcing belt, a second reinforcing belt that is narrower than the first reinforcing belt, and an auxiliary belt that is spaced apart from a tire equatorial plane and disposed between the carcass layer and the first reinforcing belt,
• the first and second reinforcing belts being made by performing a rolling process on coating rubber-covered belt cords made of steel,
• the first reinforcing belt and the second reinforcing belt having cord angles of 11° or more and 30° or less with respect to the tire circumferential direction, and
• the auxiliary belt having a cord angle of 55° or more and 70° or less with respect to the tire circumferential direction, wherein
• the belt layer comprises a protection belt disposed on an outer side of the first reinforcing belt and the second reinforcing belt in the radial direction,
• the protection belt has a cord angle of 11° or more and 30° or less with respect to the tire circumferential direction,
• the protection belt comprises rubber-covered belt cords made of steel and is made by performing a rolling process,
• a distance De3 from the tire equatorial plane to an end portion of the protection belt has a relationship De1<De3 with respect to a distance De1 to an end portion of the first reinforcing belt and a relationship De2<De3 with respect to a distance De2 to an end portion of the second reinforcing belt,
• a distance De5′ from the tire equatorial plane to an inner end portion of the auxiliary belt in the tire width direction has a relationship 0.05≤De5′/De5≤0.30 with respect to a distance De5 from the tire equatorial plane to an outer end portion of the auxiliary belt,
• an outer diameter of the belt cord forming the first and second reinforcing belts is in a range of 2.0 mm or more and 4.5 mm or less,
• a number of ends of the belt cords forming the first and second reinforcing belts is in a range of 14 ends/50 mm or more and 22 ends/50 mm or less, and
• a cord diameter of the belt cord forming the protection belt is narrower than the cord diameter of the belt cords of the first and second reinforcing belt.

A pneumatic tire, comprising:

• a carcass layer;
• a belt layer disposed on an outer side of the carcass layer in a radial direction;
• and
• a tread rubber disposed on an outer side of the belt layer in the radial direction,
• the carcass layer having a cord angle of 80° or more and 100° or less with respect to a tire circumferential direction,
• the belt layer being formed by layering a first reinforcing belt, a second reinforcing belt that is narrower than the first reinforcing belt, and an auxiliary belt that is spaced apart from a tire equatorial plane and disposed between the carcass layer and the first reinforcing belt,
• the auxiliary belt being made by performing a rolling process on coating rubber-covered belt cords made of steel,
• the first and second reinforcing belts being made by performing a rolling process on coating rubber-covered belt cords made of steel,
• the first reinforcing belt and the second reinforcing belt having cord angles of 11° or more and 30° or less with respect to the tire circumferential direction, and
• the auxiliary belt having a cord angle of 55° or more and 70° or less with respect to the tire circumferential direction, wherein
• a distance De5 from the tire equatorial plane to an outer end portion of the auxiliary belt in a tire width direction has a relationship 0.75≤De5/De1≤0.99 with respect to a distance De1 from the tire equatorial plane to an end portion of the first reinforcing belt,
• a distance De5′ from the tire equatorial plane to an inner end portion of the auxiliary belt in the tire width direction has a relationship 0.05≤De5′/De5≤0.30 with respect to the distance De5 from the tire equatorial plane to the outer end portion of the auxiliary belt,
• a distance De2 from the tire equatorial plane to an end portion of the second reinforcing belt is less than the distance De5 from the tire equatorial plane to the outer end portion of the auxiliary belt in the tire width direction,
• an outer diameter of the belt cord forming the first and second reinforcing belts is in a range of 2.0 mm or more and 4.5 mm or less,
• a number of ends of the belt cords forming the first and second reinforcing belts is in a range of 14 ends/50 mm or more and 22 ends/50 mm or less,
• a cord diameter of a belt cord forming the auxiliary belt is in a range of 2.0 mm or more and 4.5 mm or less, and
• a number of ends of the belt cords forming the auxiliary belt is in a range of 13 ends/50 mm or more and 20 ends/50 mm or less.