Currently up plating following the advice on this excellent forum

That's a serious increase Jamie. Is your van built on an ALKO light or heavy chassis ?

AFAIK the standard FIAT Ducato chassis has a max rating of 3650kg.
For a GVW of 4250kg rear brakes need to be uprated discs, tyres need to be 225/65/16 or thereabouts (16" wheels) and the suspension and axle need to support the lot.
I'm not sure the standard FIAT Ducato axle can actually take all the necessary modifications needed for such and uprated Axle Weight.
Anything from 3850kg upwards is usually an AlKo Chassis
Maybe I'm wrong though

My Ducato is rated 4000 kg , I upgraded to 121/120 tyres myself, I'm not aware of any other modification although the spring's , shocks and brakes may be upgraded, it's not an ALKO chassis, 2.3 L engine

So I will be getting the paperwork to send to the Irish equivalent of dvla and I should be up plated to 4250. Picture of my original wheels attached.

My van is currently plated at 3650kg.

From van weight engineering; “So again, with these suitably rated wheels fitted, and all our traffic lights showing green, we can go to the MAM limit of 4,250kg.
This should increase your payload capacity from the published 393kg, to approximately 993kg.”

As you appreciate with my payload of slightly under 400kg I’m probably well over when I go for long trips. 993kg is probably overkill but for peace of mind it’s worth it.

I was lucky, able to up plate by 500kg with no modifications

Email them, civil service not trained in the use of phones but good with email

Do you have an email address for them?

Why an I not surprised!
I also had an issue with Shannon and the paperwork. It took 2 attempts to get it right.
I communicated with Maria Philips who got it sorted. Her email is Marie.Phillips@transport.gov.ie

Following an excellent Thread on This Forum it got me thinking about increasing my MGW.

Start to finish of the process.

Up plating, the max gross vehicle weight.
I have a motorhome it came with a max permissible mass of 3650kg (note I have the required C1 licence) this in theory gave me a payload of 393kg. So all the stuff I carry and all fluids etc had to be < 393kg or I would be overweight.

Being overweight can result in a motoring conviction and possibly invalidate your insurance.

I came to the conclusion I wanted to up my GVW and my payload. I contacted Van Weight Engineering in the UK they asked for various photos, copy of my registration certificate a photo of my weight plate and chassis stamp.

They advised it would be possible to up my GVW as a paper exercise. Depending on certain factors I could go to 4250kg on my 2017 Fiat Ducato Chassis.

The suspension needed rear air bags, the front heavy duty springs or air bags. The tyres needed a suitable load rating, the wheels also be suitably rated. In my case the standard brakes were ok for 4250kg. I had the suitable tyres and airbags front and back but I had to get new wheels as my Fiat alloys would limit me to 4000kg.

I completed the forms sent electronically to me and emailed them back. I paid £275 approximately. They sent my all the forms I needed to post to the DOT at Shannon.

On Friday 26 of January I posted the required completed forms, 1 Engineers Report, 2 Design Weight Certificate and 3 RSA Modifications Report. Along with my Registration Certificate to The department of transport for the attention of a named person that Van Weight suggested.

On Thursday 1 of February I received a replacement registration certificate, reference however this was a duplicate of the one I had posted to them.

On 7 of February I emailed the contact at the Department of Transport who said she would issue the revised registration certificate with the new Permissible Mass (F1) of 4250kg. It was originally rated at 3650kg GVW.

There was no charge for changing the registration certificate.

On Monday 12 of February I received the new and correct Registration Certificate.

Van weight have posted me a new stick on metal plate for the engine bay.

I now have a payload of nearly 1000kg so I can eat some more pies without worrying.

I have to say Van Weight Engineering were very easy to deal with. van weight engineering also help with Down Plating but I do not know the process that is involved.

833 bottles approx

Or a Dog sitter, or maybe a Chef to make the pies .