How do you pronounce 'wars' and 'laws'?
/-s/ or /-z/?
The final –(e)s of plural forms and the third person singular present simple is pronounced:
/s/ after unvoiced consonants except /s, ʃ, ʧ/: /kɪks, pʊts, kɒfs/
/z/ after voiced consonants except /z, ʒ, ʤ/, vowels and diphthongs: /hʌgz, siːz, leɪz/
/ɪz/(or/əz/) after /s, z, ʃ, ʒ, ʧ/ and /ʤ/: /bɒksɪz, bʌzɪz, wɒʃɪz ruːʒɪz, kæʧɪz, ʤʌʤɪz/