What do you mean? Like R5 is RSS and R4 is RS?
in that case:
N1=E
N2=COM
N3=RD
S1=SH
S2=SM
S3=SS
R1=RSH
R2=RH
R3=RM
R4=RS
R5=RSS
Edit:
E=Economy
COM=Comfort
RD=Road
SH=Sports Hard
SM=Sports Medium
SS=Sports Soft
RSH=Racing Super Hard
RH=Racing Hard
RM=Racing Medium
RS=Racing Soft
RSS=Racing Super Soft