Crr question

[Rusty Shackleford]

Hello everyone.

Long time listener, first time caller.

My question is this, I know from http://www.bicyclerollingresistance.com ... rt-ii-2015 that the Crr for my tyres is 0.0044 for ONE tyre loaded with 42KG. Me + bike is about 81KG (so roughly 42kg per tyre). I also know from the same site that the Crr is only very slightly less than gp4000s' so naturally i selected premium when setting up my New PP. the problem is the default is about 0.003 or 0.004 (i forget which) and as i have two tyres, it should be 0.0088 (2*0.0044). what value should i be using?