Brother, I owned suzuki alto 2010 model for more than 7 years.
Stock tire size was 145/80 but I installed 155/70 since I bought Alto.
In more than 7 years of period, I never had any Issue with suspension of my car. It all depends on your driving style.
Even with stock size tyres you can damage your suspension within months, If you don't care while driving on bumpy roads, breakers and cat eyes etc.