---------------------------------- My '87 LSC (El Camino chassis) has 14" wheels and tires. I would like to change to 15". Has anyone changed their GM chassis Avanti to 15", and if so, what size tires will work best? Thanks for your input. Bob Ziff - Langhorne, PA '63 R-2 4 speed '67 327/300 4 speed '87 LSC ------------------------------------ 1987 Rims 15 x 7 : Front = 205 x 60 x 15 Rear = 215 x 65 x 15 The stock tires were 205 x 65 x 15: When we put on 2" Bell dropped spindles on the front we changed to a lower aspect ratio of 60 ( to clear the front fenders and modified front sway bar ), The 215's on the front and rear will work fine on the LSC .