You'll need to spare -20 offset with the Porker adaptors but with the amount of tyre sizes available, the 6J teledials should be fine!

So far as i'm aware you can go for skinny (135/70 R15) or narrow+low profile (165/50 R15) Neither of which should cause you much if any scrubbing issues, even with the extra 20mm poke
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It's meant to be like that!