I ran my 195/60-15 Arctic 12s (on 15x7 methods) @ almost 45 PSI on dry summer roads traveling to rallies, and out to the stages, (as well as on rough forestry stage roads working those rallies) and they did not wear unusually at all.
But then I do not put anywhere near as many miles on them overall, or in total, as you probably put on your low profile, 17" setup.
(I'm guessing that something 100+ miles away is considered 'around the corner' out there in Ian Tyson country. LOL)