For my '79 RX-7, I'm sticking to the stock rims, basically because I can't afford new ones at this point. Because they're 13's I have very little to choose from for a good summer tyre. I'm giving the Sumitomo HTR 200 a try this summer. At $92 CDN a tyre, they're not particularly expensive, but they have good ratings at TireRack.

 

To clarify, I use those pressures at the track/auto-x only.. on the street I use about 38F/34R.