Just for fun I checked with Discount and Tire Rack. Both suggest a 7" wheel with a 275/60-15. They also have 8", 8.5" and 9" as recommendations, but they recognize that people may want to stay with what they have.
From:
http://www.tirerack.com/upgrade_gara...=wheels#wheels
SIZE: 15x7
American Racing AR767 Steel Black Painted Product Details
Product Image Size Selected: 15x7
Recommended Tire Size: 275/60-15
Price: $88.00 (each)
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