by the way my old practice was to fill the 28/30 pressure in my baleno tires (13" tire) but after some time i felt that it is giving a heavy impression on car engine..so i changed the routine and get it to 30/32...and i m happy with the pick and suppose the fuel economy would also be increased to a bit..
low pressure tires gives a look to your car and absorb shocks better but you compromise on handling, fuel economy, acceleration (pick) and tires wear and tear increases.
high pressure tire are not good for suspension and give your car a high look but it has all that advantages that are mentioned above as the limitations of low pressure tires
in my opinion 30/32 is a moderate tire pressure...neither high neither low
choice is yours..if i remember correctly you have put new tires in your car...just wait for 2-3 week..i hope it will settle down by itself...i remember when a put new tires in my previous car Alto the wobbling happened and then the problem resolved automatically after a month