Don't worry too much about the car hitting speed breakers. I have a Belta as well and any half-baked speed breaker that people get constructed in front of their homes hits the car's underbody. The properly made ones, that are wide and ramp like don't hit the car at all. If you are really concerned about this issue then get bigger tires (e.g. 195 65/R15), like Murtaza ^ pointed out above. There isn't much difference between the road clearance of any JDM car and Honda City (Civic as well for that matter).