I think everyone should not mind of adding extra weight . If
adding or changing of stuff give u better ride just go ahead. If u
really mind the weight can cause lack of power and high fuel
comsumtion. I think u going to ask ur family and frens not take
take a ride in ur car, becos each person will average will add on
55kg, if u fetch 4 person including driving is total 220kg!!! IS A
LOT MORE WEIGHT! then changing to a bigger rims or SP.! ur car
going to drinks man!! when u r taking ur family and frens for a
ride!
If u really want to lighten the car to give u better power and fuel
consumption i suggest u should take off all the seats, dashboard,
side panel and spare tyres, everything only left with the driver
seat. The will really give a perfect power and low
comsumption!
Most important u have to enjoy ur ride, human's needs is always
unable to fully satisfy. When u get use it, u will feel is not
power enough , u want it better! Notting is perfect, lighter car
give u lesser comfort,l ower price and heavier car give u better
stability, comfort and higher price to pay for. Try to balance ur
needs and wants. U going to have a better day ahead.! 
http://www.cardomain.com/ride/2475838.
