Hi, my Pajero Mini has developed a 'noise' when going over pot holes or off road. It's a short, almost like squeeky spring sound when going over bumps. But at the same time if the speed gets avove 50km/h on a flat road with no bumps, the steering wheel vibrates wildly. There are lots of pot holes where I live so it's almost impossible to avoid them. Any ideas on what the noise and vibrating steering problem could be? Thanks.