It depends what size your wheels are.
I have 18in rims and after a bit of research and advice on here opted for ACCELERA tyres, which I've used for 2 years. Fantastic tyres for general use and really good value.
For winter tyres I opt for Nangkangs, again cracking tyres that come with the snowflake symbol for snow use!
I have used the internet tyre sellers and also gotten advice from independent fitters. The crucial thing to remember is your load rating for the bongo; a minimum of 96H is acceptable from what I believe or XL rated tyres. Some people opt for the load rated tyres and others (inc my mechanic) recommend van tryes (as he reckons with the size and drive the bongo should be shod that way).
There is plenty of info on here. Have a search and look at what others are using. Going to a fitter without some knowledge can be a gamble. That said, I turned up to a local one a few months ago and they were fantastic, relying on word of mouth and repeat custom!
try
www.blackcircles.com and other such websites for research.
hope this helps
Oz..
