[JL8Jeff]

I can definitely say the OEM ZR1 5 spoke wheels are lighter than the aftermarket ones. My old 96 SS had the 5 spoke wheels and I bought a pair of 17x11 AFS ZR1 wheels and I found out one of my stock 17x9 wheels was aftermarket, not OEM. I had the tires dismounted and you could definitely feel the weight difference. 275/40/17 tires will handle a lot better than 245/50/16 tires so it's up to the individual if you want better handling for the added weight. But go with OEM wheels over the aftermarket if possible. OEM 17x11's are the wrong offset so you don't have much of an option if you want to go that wide.