I'm looking at some 19" rims for winter tyres (not just for the UK roads as we head across Europe at Easter)

Recommended winter tyres for this size rim are 255/45 R19 100Y

I have found some Sottozero 3 255/45 R19 104V

Lower speed rating (Still to 149mph which isn't going to happen anyway) but a higher load rating.

They are also marked MO - So Mercedes

Does anyone see any potential issues running these tyres? I know Winter Tyres it's quite normal for a lower speed rating. I don't understand why for a 19" Winter Tyre Audi recommends a Y rating yet 18" tyre they recommend a H rating.

Cheers