Good Morning,
I just spotted this thread and thought I’d post some information I gathered last week. (I know I spoke to you Mr. Downes at the end of last week).
These are the tyre sizes of a gentleman who we did VB 4C Air Suspension for a few months ago.
He had 275/35/ZR20 tyres which I have to say looked very nice.
My California is 235/55/R17. Bog Standard.
When he came down for a measure up, we were a little worried about the size particularly when we put the vehicle in ‘Car Park’ mode and gave it full lock. After quite a while of trying to be clever and work out circumferences and diameters, we decided to take off all 4 of his wheels and fit them to my California.
They didn’t rub and gave me an instant ‘wheel-envy moment’ as they do look great (particularly in Sport Mode).
We did a little test drive and they do run well and a lot nicer than R17 wheels on steel suspension. That said, tyres do offer a certain amount of suspension, and the lower the sides, the louder and less comfortable the ride becomes.
We all know why we’d opt for larger rims and lower profile tyres, so there is a compromise to be had.
If you have a look at a little web site I found, it shows you the exact circumference and height difference between the two tyres mentioned above:
https://tiresize.com/tyre-size-calculator/
It shows a difference in height of 0.4 inches and 1.3 inches in circumference. Although it's not a massive difference, it did get quite close to the inner wheel arches so I wouldn't go too much bigger.
I'd suggest using the tyre measuring tool above and put in the tyre you're looking at to see if it changes too much.
Also bear in mind that both of the above vehicles were T5s. I don’t think there will be any difference with the T6 as that side of the vehicle doesn’t seem to have changed too much at all.
Photos you ask? I know I took a load for exactly this reason, as to where they are.....????
Regards
Ryan.