I have factory NSX chromed wheels and am only replacing the rear 245/40 -17 inch tires.
(I have fairly new OE Bridgestones on the front)
I am a weekend driver not a serious racer so I think the Michelin Super Sports will work for me.
I think the Michelin Pilot Super Sport is not a good choice for you.
It's extremely desirable to have four matching tires (same make and model) on all four tires. I can understand that there are times you can't do that, such as when only two tires need replacing. But that should be your goal at all times.
Right now you have two Bridgestone Potenza RE010 OEM tires for your 16" front tires. Of course, you can get two new RE010 tires for the rear, and you'll still have four matching tires.
Maybe you want to use some other tire on your car. I'm not sure why you wouldn't get more RE010, since you haven't mentioned it, but that's not the point here. If you're going to replace two tires and mix a different make/model with your fronts, you should get tires (a) whose performance characteristics are as similar as possible to the fronts, and (b) for which you can get front tires when you need them. The Michelin Pilot Super Sport flunks that latter criterion, because it doesn't come in 16" sizes for your front wheels. So
if you get the Super Sport for your rears, you are never going to be able to get front tires to match the rears. BAD IDEA.
If I were you, I would do one of two things instead. (a) If you like the OEM tires - again, you haven't said why you would switch to something else - then I would buy a pair of rear OEM RE010, and use them with your fronts. (b) If you want to switch to something that lasts a little longer and costs a little less, I would buy a set of four Continental ExtremeContact DW tires, in 205/45-16 and 245/40-17. You can put the 245/40-17 on the rear and mix them with the RE010 until the fronts wear out, then switch to the Continentals in front as well and you'll have four matching tires. The reason I would buy all four Continentals now is that they are going to be discontinuing them in the 205/45-16 size, but they are still available at the moment. Besides, you get a free Nook with the purchase of four.