Another point of reference for you. On my '68 I'm running BF Goodrich g-Force Super Sport All Season Radial; 225/45R17 mounted on American Racing Wheel Torq Thrust M Anthracite W/Machined Lip. 17" x 7" x 4" Back Space Tire Part # 245WR7GFASXL-26483; Wheel Part #AR105M7761AML. Tire is 25" tall. Front suspension is basically rebuilt stock, lowered by cutting the spring. I'm using an Addco 1 1/8†diameter front sway bar Part No. ACO-599 with KYB Gas Shocks Part No. KG4515. I'm running Wilwood disc brakes which move the hub out 3/8". Everything fits well. It sounds like you need a little more back space in your wheels or shorter tires. According to BF Goodrich, 215 60R are 25.2" tall, 215 65R 26" tall and 215 70R 26.9" tall.