To provide a pneumatic radial tire that does good to improve turning performance of a four-wheel vehicle, while maintaining wet performance.SOLUTION: A pneumatic radial tire 1 for a passenger vehicle includes a carcass 6 of a radial structure, a belt layer 7 and a tread part. The tread part 2 has an outer tread end To and an inner tread end Ti. The tread part 2 is partitioned by a plurality of main grooves 10 into a plurality of circumferential land parts 15. The circumferential land parts 15 include an inner shoulder land part 16 and an inner shoulder middle land part 17. In the inner shoulder land part 16 are provided a plurality of inner shoulder lug grooves 21. In the inner middle land part 17 are provided a plurality of inner middle lug grooves 22. The number of inner shoulder lug grooves 21 are more than the number of inner middle lug grooves 22.SELECTED DRAWING: Figure 2
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