changing to low profile tires will sacrifice the comfort..
for which size? 15"? 16"? 17"?

how can we know how much weight u can reduce if u not giving us your current wheels specs & size!

y u all so lazy use search button..
you have to understand what contribute to the weight your talking about.. as not only the rim.. there is also tyre weight.. also amount of air in the tyre is weight.. also higher profile tyre will also contribute alot of weight as the thicker the tyre+mass of rubber.. so to say sometimes even changing rim would not give what u aiming for.. i don't know the stock pesona rim weight but some aftermarket rim on the same size is lighter.. but u have to find the right 1.. or else ur not gonna lose any weight at all.. also may i know why izzit that ur aiming for as if to lighten ur car sumore?

---

Added on September 28, 2012, 12:05 am
what car are u using? if ur talking about bouncy.. ur on any lowered springs or coilover? if no then don't have to worry on the bounciness.. the thing u have to worry is ur handling.. as changing to bigger size rim will make ur car higher and when thats happened ur handling gonna go off..
55 or 50 series profile are heavy.. also 45 is the ideal series as its not to thin and most malaysian car have issue of tyre hit the fender with 17" 50/55 series..

go change to those advanti light weight series.. weights 5+ kg..

i dunno how heavy is persona stock rims, for sure hell the advanti is lighter than ur persona stock rims..

got budget go search for used forged rims.. lighter than casting wheels