As we've got the Fiat Maxi Heavy chassis, which as standard can go up to 4250kg without any mods, that's what we asked the dealer to see if he could register it at that and he did, if not we'd have just uprated again like last time (via John Ruffles) and done it afterwards.
I'm awaiting delivery of a PVC on the Maxi chassis that's plated at 3500kg MAM. Is there any extra charge for the dealer to register it with a higher MAM? Do you need to have new plates with new weight on them?
Like you I was going to go the John Ruffles route when I took delivery of the van, but it seems much simpler to do it on initial registration. Thanks.