Definately agree, tryes are a key. Theres too many skylines with big power running crap times. All comes down to tyre choice. If you spend the money, spend a little extra and grab some good tyres, Et streets, RA1's, RE55 etc. Theres some pretty quick times to be had.
113mph should be good for a easy mid 12. I done it with normal street tyres with a 2.02 60'