My pig vibrates due to the tyres having flat spots caused by being left standing for long periods ! I only drive it a couple of times a year so its just something I have learned to live with ! The driving will not be anywhere near as refined as any modern vehicle so look a long long way ahead for braking and don't try racing anyone from the lights as it will probably break the back axle ! Gently does it is the order of the day ! Have fun and good luck Andy F. Oh and post some pics in the Pig gallery please !