I need to gain ground clearance ... any advice of what size wheels and tyres would give me this without replacing shocks and not rubbing my arches .. ?
Not quite sure on your exact specification of Transporter, the variants across VW sales area must be large. Some T6 came with 16" wheels and small brakes and so on. Mine a 2019 Caravelle that come with slightly lower suspension than a van could have 17" but I choose 18" because I prefer little more space between disc and wheel rim.
I use my T6 off road it is 4Motion with rear Differential Lock. Although I have aluminium wheels that came withe the vehicle I chose 18" steel wheels. They are normally far cheaper, than alloy. For some one driving many miles off road many many miles from normal facilities, steel wheels could also have an advantage in allowing easier repair in simple work shops workshops. Perhaps with a hammer and shaping dolly. In an emergency in the bush or desert that could be vital.
Many of the wheels one sees with the swamper look are just far too fussy a design. They appear to me to be mimicking
Split Rims. Which are specialist wheels designed as the word suggests. Sometimes the rims allow unbolting to facilitate replacement of tyres and sometime they allow a tyre clamp ring to squees the tyre bead to the wheel rim. These are particularly useful when tyres are deliberately deflated to very small psi, perhaps 2psi or less for driving in Swamps which is popular in some parts of the USA. I personally would not buy swamper fashion wheels. Why pay ££££££/$$$$$$ for something that appears to me just a fashion and have little attraction for me. I prefer practical solutions that lead to form. I am not someone who really cares about fashion, in pleasing popular culture or satisfying vanity for its own sake. Some swamper like products may offer some paint or body ware protection and help avoid scratches and so on.
By the way on my 18" Steels Wheels fitted BFG AT 255/55R18XL KO2 which are very good tough off road All Terain tyres with 3 Peaks Mud and Snow rating so are also All Season. While we speaking BF Goodridge are changing over slowly to KO3 which have a slightly different tread design and are promised to be even more affective in the snow. It will take a few years for every size in BFG catalogue to change from KO2 to KO3. The BFG website has published availability and promised production dates for each size. Only limited tests have crossed my eyes, so we will have to wait to see. There are of course many other off road type of tyres All Terrains are a popular option and Wild Peake have a growing popularity and are usually a little cheaper and have a few tread designs and sizes. Not sure exactly what type of terrain you may be hoping to travel on??
Larger wheels might be possible with fitting suspension lifts.
In order to have a better insight into off road World. May I suggest. That it may be a good idea to join or follow some off road platforms or buy some off road magazines on online or print. Unfortunately, although there are some safari and off road adherents in the T5, T6 world much is just for appearance. It is exactly the same for Landrover, Landcruiser and Jeep followers, many if not most never venture anywhere other than the local shopping mal or suke.
Not by enough, unfortunately.
This is my 85kg or so literally jumping up and down on the driver's door step...
If you check out on a tyre comparison site. Compare all the details and specifics, size rim diam, XL, or not VW intended pressure for original OEM tyre and so on. It just might be if you have not, then, the new wild peak tyres just might be overinflated. An example, my OEM 255/45R18 I think 102, Front 44psi to Rear 41psw changed to with BFG AT KO2 255/55R18XL I think without looking 109?, Front 35psi , Rear, 34psi.
However although less psi and somewhat softer because the tyre carcass XL and extremely tough rating they are still harsh at times. It is just a thought.
Sorry for the bold print can't reduce it!