I don't think so?!?! Replacing the T1-S.
T1-Sport is a KU31 like tire (or the KU31 is a T1-S like tire...either way, hankook evo etc etc). So good overall life and grip on the road. Ok for light track days, 2-4 seconds a lap slower than R1-R.
R1-R is a KU36 / 595RSR / AD08 like tire. Fantastic dry grip on the road, standard wet grip on the road. Will wear faster than T1-Sport, but super grippy on the track. Harder sidewalls for better cornering, compound built to last with heat.
Generally lower means softer, means faster on the track, means more wear on the road. so 10-15,000km instead of 15-25,000km.
T1-Sport
UTQG = 240
R1-R
UTQG = 140