In the past 10 odd years, I’ve run 4 different “all climate” tires on 4 different cars: Toyo Celsius on an ’08 MB R320 CDI (2 sets; high praise for the icy, slushy and heavy rain performance from my wife who used the R-Class as her daily driver). The first set lasted from around 100k miles to 165k miles when they were down to 3/32s. A new set was put on and the car sold at about 180k and the guy who bought it tells me it’s still going strong on those tires at 240k miles (MBs 3.0 td runs forever!). Had similar experience with the Toyo Celsius on an ’09 MB ML350 but only ran those about 25k mi before selling the vehicle. Unfortunately, Les Schwab dropped the Toyo Celsius and it’s a very hard tire to find now.
Bought a 2019 Audi S5 cabriolet new and put Vredstein Quattrac Pro tires on it from the get go. They’re still going strong at 35k miles with 6-7/32s tread left and good performance in slushy snow and a bit of frosty surface ice this winter. They are an all-climate tire with a bit of “sporty” feel to them, and quite complementary to the AWD S5.
Bought a new 2021 Audi Q5 for my wife’s daily driver and put Michelin All-Climates (not the “2”) from Costco on it from the get-go. They performed extremely well in winter conditions and also in hydroplaning resistance but they were kind of NOISY! Drove those tires 70k miles and 3/32s tread and replaced them with Nokian WRG4s which my wife absolutely loved in winter conditions and which were very quiet and well behaved on dry pavement otherwise. Sold the Q5 with about 85k miles on it and lots of tread left on the Nokians.
Just bought my wife a 2023 Volvo XC90 that has Volvo factory 21″ wheels and all-season Pirelli Scorpion Verdes (not 3-peak snow rated). AFA I can find: NO ONE makes an “all climate” tire in 21″ wheel size yet. We’re going to bide our time a bit as we’re out of the season for Oregon Coast Range snow & ice for this Spring. But my wife (who is a VERY high mileage driver–25k/yr–if that wasn’t apparent from the story so far) says she DEFINITELY wants a set of Nokian WRG4 All Climate tires on this car by Fall. Maybe the new WRG5, though I need to learn more about the changes because if it isn’t as quiet and competent as her WRG4s were on her Audi she’ll be upset with me!!
So there’s some “all climate” tire history for you! Generally speaking, I think that seasonal tire changeovers can be put behind us with the kind of driving we do. I’m sure if you go to the high mountains or live in the real cold country, you’d want to put on some fast wearing, “real” snow tires for winter. But for those of us who have 4 seasons, but a fairly mild 4th, I think the all-climate tire has proved its stuff. I’m certainly sold on it for where I live.