Hi Doc

Front: 120/ 70 R17 (58H) Up to 236kg; 280kPa, minimum tread depth 0.8~1mm.
Rear: 160/ 60 R17 (69H) Up to 325kg; 280kPa [(?!) weird front and rear same tyre pressures!?] minimum tread depth 0.8~1mm.

so what KPa are you using on your front and back tyres then ? it is fair to say when you are talking about a "car" that has a wider back tyre the pressure is normally less untill you load up the car with people in the back and boot full up with cases then you increase the pressure on the back tyre only . With the TR you should only increase the back tyre pressure with you are 2 up and all loaded with riding gear so i think CF is just playing safe with 280 KPa allround . so should it be 280KPa front and maybe 240KPa back ???? maybe 650TR rider in the UK can chip in with his 2 P worth