Once L60 X 15s became available, I ran nothing else on the back of our '69 Chevelle. With the proper back spacing, even larger tires would fit without jacking the rear end a mile in the air. Sticky Polyglas would be great.
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Chevelleless after 46 years......but we did find a low mileage, six speed, silver 2005 Corvette. It will just have to do for now.