Hello
There’s a great ‘happy new-ish owner snap!’ Great to read the service news.
On tyres, I think the starting point needs to be the ‘load rating’ (number) of those currently fitted. I used to think this was country-specific, but I’ve been told this is universal. See (for example):
https://www.theaa.com/driving-advice/safety/tyre-speed-rating
There’s the speed rating (letter), too, but I think this is less relevant…
I'm sure you have a local source...
Having got this said, I use “Hankook Dynapro ATm RF10 195/80 R15 T (96)”
And they have been great. These are thinner and taller than yours but plenty of grip and decent across a range of surfaces.
You can see these in my ‘Show us yours’ page, if you wish:
https://hiace-super-custom.forumotion.com/t4317-my-lh119There’s now a RF11 (or 12?) that’s supposed to be better (grippier and quieter, but also more expensive).That’s progress.
I need to replace two (nominally on the rear) and I will get like for like.
BTW having had a few dramas with garages and date codes and the like I tend to buy new tyres and get them delivered to a local place who fits them to rim and balances. Anything with a >18 mo old date code should be not accepted (can you make a condition of purchase if poss?) but with supply chains as they are, sometimes <24 mo could be considered, just my opinion.
You can compare the different sizes on:
https://tiresize.com/calculator/
And impact on gearing etc here:
https://www.blocklayer.com/rpm-gear
Even with a 3L engine the 195/80/R15 have been fine.
A few extras...
1 - If you are going really snowy you might want to consider chains. I understand on a 4X4 (part time) these should be fitted to all four wheels and I presume the same for full time 4WD.
2 - For a set of winter tyres I’d get them fitted to a separate set of steel wheels, Therefore, much less likely to cause problems, especially if the roads are salted. Alloys, especially those on the rear suffer to the point of leaking.
3 - If the roads where you are going are salted take a look at the underside of your van. I’ve been told that they don’t use road salt in Japan and Japanese domestic vehicles do not have the same underbody protection that export (or European for example) vehicles have (or claim to have).
4 - PM @Merlin_. He’s uploaded a few YT vids of driving in the snow and will probably have great advice. He’s also fitted a front winch.
HTH.