Just to share, abt 1 mnth since 5K servicing never bother to check tyres, then the steering feel very heavy, then I go caltex air pump check Wah piang Horrified.!!
Front tyres 170-183Kpa
Rear tyres 150-160+ kpa
then during this period, my FC like KNS, 11-12, quickly pump front to 245 rear 225, then now driving feel shiok, my last quater tank then I go pump air but due to making whole work week to tuas from changi, my FC was like 14.5 having 3/4 of my tank wasted on lousy tyre pressure!

now on good tyre pressure FC seems to increase tremendously......looks like its the tyre pressure all along..