After 15 years of owning my 914-6, I finally spent the money to get it right.
It now has a rebuilt 3.2, new brakes, shocks and springs. My 10 year old tires (with about 200 miles) are too old to track. The tires will see 75% track, 20% street and 5% AX.
After reading back threads, I'm leaning toward either Victoracer V700 or MPSC.
I need 205 - 55 - 16 and 225 - 50 - 16 which seems to limit my choices.
I need feedback. Anyone with experience?

I really like the Falken Azenis, they are great for the track as they stick like glue. Not sure if they come in that size but it wouldnt hurt to look into it.

I will check with Tire Rack.

Edit.
Tire Rack does not carry them. Any other source you can recommend?

All the 911 guys are raving about the Toyo RA-1 for the track.

Mine were purcahsed from Tires Warehouse in Fountain Valley. I am not sure where else they are available, I am sure someone here would know.

Try Discout Tire Direct for the Azenis tires (tires.com). It seems like they used to carry them.

Oh, by the way...