vibrate

I'm the new owner of a 1995 T4 with a 2.5l petrol and automatic trans. Drives well, shifts smoothly. My question is when I have it in drive at a stop the whole van vibrates. If I take it out of gear it idles smoothly. My thoughts are the transmission is pulling against the brake causing this...

Hi can anyone help, my T5 LWB 2.5 shakes at 60mph and sometimes even at 40mph. The steering wheel vibrates and so does the dash. Do I need to worry? I have 18" RR wheels and 255's. I wondered if it was to do with the wheels I took the bolts out and I think they are the original vw. They were...