Looking for a lil advice/recommendations, i'm thinking of replacing my old 15's and go to 17", one has a hammered lip, they are little too tucked in and size is getting hard to get good performance tires. Current tires keep flat spotting unless i keep the car jacked

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I'm wondering what offsets and rubber would work in a stock suspension URQ? Should i go 8" or 7.5"? Rears are not rolled.