QUOTE(Dias @ Aug 21 2011, 12:31 AM)
Huh? A high tire pressure doesn't cause bad FC. It does kill the tires prematurely though besides a noisier stiff ride.
QUOTE(John91 @ Aug 21 2011, 12:45 AM)
I know right! In fact its quite the contrary. Underinflated tires only give worse mileage. But I tested out my fofi on the Federal, speed all the way back with ETC SP7 with one passenger. FC remained at 8.5l/100km throughout. Usually if I do that alone, the fc will increase around 0.3l/100km... so... I'm quite pleased too haha.
And yes @confuzan, no more bumpy ride, its SOO much better now.

hm..
actually under inflated and over inflated does effect the FC and performance of tires.
under inflated tires gives u terrible FC, it causes faster wear n tear on the side walls and heavier steering feedback.
over inflated tires may give u not so good fc due to the rotational mass of the wheels have increase. it takes more power n rotation to go one round. u get much lighter steering feedback BUT u get lesser grip. especially when u going over those yellow stripes. u will start skidding over them when u brake. n not to mention super duper bumpy ride.

haha i have tested n experience the above when i had my previous ride.