What should be the best rim size for Vitz for driving on Roads of Karachi, considering Speedometer reading,economy and impact on suspension.
nothing bigger than 185/55R15's for your requirements. You could go 205/50R15 but you will experience slight rubbing on your front and rear wheel arches (unless you grind away the inside lips)
search for the tire size calculator...or read some reviews in the wheels and tires section. compare ur stock size with the higher size rim and ull get ur answer.
Best size is 185 with 13 rims, as 14 are a little heavy for vitz, 185 on alloy 13 rims will give you a slightly better bottom clearance and no load on suspension, speedo meter change is hardly noticeable (about 1.7 percent decrease). I am talking personal experience
@deloyi understand that you are trying to help but you should also state what profile the person should buy otherwise they might end up buying 185/45R13's which would ruin his ride & speedo reading. Just for future refference.
@mnaeemin this case (as @deloy suggested) you'd need 185/70R13's to keep your overall tyre diameter close to stock (4mm larger)
good response storm
@storm.......you the man.
oops,sorry, missed out a critical factor,Yup, agree, the size is 185/70R13'sthanksdeloy