Haven't had experience with either the FK451 or the new FK452, but have had Toyo T1-S and T1R. The T1R was great in the rain and aggressive driving, but don't work too well for AutoX.

 

Where is everyone purchasing their tires for the OEM 19" rims????

 

Looks like shopping around is the best deal.
Some places are good today but bad tomm...

 

The t1r's are noisy also if you plan to take them to the track there not that good of a track or mountain run tire. I would either go with the Falken FK-452's or the Dunlop Direzza DZ101 or Michelin Pilot Sport A/S. These are the three tires my buddy who works at Goodyear has recommend. If you have any questions about them I've driven on all these. Just let me know