I have six ultra wheels they are 103 extremes 15x8 with 5x5.5 bolt pattern and factory race drilled to 5/8”. You can still use these on a stock 1/2” stud with the desolate lug nuts.
1 tire is new 4 are 95% all with dated codes 42 week of 2021 the six tire is 25-30% with a mid year 2018 date code . No patches or plugs moved to a different tire wheel package.