68 camaro tire size

[Aaron0668]

I want to get some tires orderd soon. I have a 68 camaro with stock tubs. running hotchkis 1.5" lowerd leafs. I dont mind trimming the outter lip to get the widest tires possible will a 285/40/18 work or should i play it safe and run a 275. the car will mostly just see the road and not many track days. thanks.