I'd go for 225/45/17, they're generally more available like you said, and usually cheaper. Although, as you said, all the tire sizes you picked would work, 245/40/17 could rub up front if you're really low.
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Hot: 2001 Estoril M Roadster
ZCP 19's, ZHP knob, JL 8W3
Cold: 2002 TiAg M3 6mt
ZCP 19's, ZHP knob, GROM, OEM 18's,