QUOTE(istoreusj4 @ Nov 14 2012, 10:07 AM)
what is the advantage of using 15 or 16 inch rim?
Provided that u buy a lighter (lightweight) rims, u will get significantly comfy ride, better acceleration, better FC especially for town driving & not to mention the cheaper tire price than the 17" tire. Also i'm less fear if got hole on the road now..last time when use the stock 17" rims, in order to save my rims, i keep swaying left & right to avoid the holes on the road (which is a dangerous maneuver sometime).
But..there is always a but, by downgrading the rims & tires, u might sacrifice a bit on road grip & handling & also the overall styling (looks) of the car

Added on November 14, 2012, 10:44 amQUOTE(istoreusj4 @ Nov 14 2012, 10:18 AM)
For the tire profile, is that the standard profile for Forte? Or can I change to another type of profile which give more protection? If yes, what will be the profile?
My spare rim is still good. I am now using the spare rim. For the 2nd hand backup rim, I can just buy any 17 inch rim or what is the specification?
Yupp..that's the recommended profile for the 17" rim. Increasing the tyre profile (while still using the 17" rims) will give an effect to the car's speedometer & odometer reading, might also alter with handling characteristic & the risk of the tire 'touching' the fender in some situation. The car might look weird also i believe...

If u want to increase tire profile, downgrade to 16" is the way to go in which u can use 55 profile tire...
To replace the spare rims, buy any 17", 16" @ 15" rim with PCD 114.3 x 5 stud (holes) will do (of course with suitable tire profile)..it's meant for temporary use anyway.
This post has been edited by izputra: Nov 14 2012, 10:53 AM