Hi Rpa07
I drive a 3.5 ton, med length, low roof in white. In the past I have had 3.0 ton vans [1.0 ton payload] and found that I was regularly 100 kg to 200 kg over weight especially when I had a lad working for me. I have a customer with a weighbridge so regularly weigh the van
Then started to connect up turbines [5KW] for a customer and used to pile on everything I thought might be needed, and did not want to risk being pulled in by the ministry as we were travelling up to a 100 miles from home.
Hence the bigger van but even now that I am working on my own the van weighs about 3200KG. It is surprising what tools, cable etc add up to.