Review update.
I've don't 7500 miles on these tyres now and have just rotated them. After 7500 miles the front tyres tread depth is 6.5mm and the rear tyres tread depth is 7mm. Original depth was 8mm. So they are wearing well and evenly. Better than other winter tyres I've used in the past.
Wet traction over the last month has been very impressive both handling and braking are sharp and precise. The last few weeks has allowed me to test them on ice. Again very good, offering good steering feedback when accelerating and cornering. Ice braking is quite impressive for a non studded tyre (around 25mph). Not yet tried it on snow.
Only down side would be fuel consumption. But it could be due to fitting heavier steel wheels. Fuel consumption has dropped 3.5mpg over summer tyres.
Still joint top safest tyre for winter I've used. 9/10

I use these tires on a tuned 400hp BMW 3-series with rear-wheel drive traction. Let me tell you, I am simply amazed by these tires for the price. Snow grip is incredible, effortless in any type of snow, but what's shocking is that the dry and wet grip are almost on the same level too ! The only real con for this tire is the braking distance on both dry and wet, it is below the stellar traction characteristics. Fuel consumption is also not stellar, but it's in line with other tires that I have used. Just make sure you inflate your tires as recommended in order to maintain optimum mileage.

All in all, I would recommend this tire if you need a good winter tire that has great traction in any conditions.

An update on my previous review.
I've done just under 20,000 miles on these Polaris 3 tyres now and they've been nothing short of incredible.
Rear tyres are down to 4mm, the sipes in the tyre are just about visible.
Front tyres are down to 3mm and there are no more sipes visible.
The tyres are perfectly drive able, still perform well in the wet and dry. I have just ordered a replacement set because the sipes in the tread are pretty much worn and from previous experience this can severely impact the traction and braking on snow and ice. Although the tread depth and the tyres could safely go on for a few more thousand miles.
To sum these tyres up there a perfect mix from the motorway to the snowy hills.
Last winter I drove from the south of Devon through sheet rain for 7 hours then further on to Inverness through a pretty nasty snow storm. The last 50 minuites of the trip in particular were through 4" of fresh snow up and down hills. Did not at any point feel out of place in those conditions. Really designed well and when your commuting at 50mph+ there quiet and comfortable.
Only bad points is the fuel consumption. It's not really bad, but going from Goodyear efficient grip performance tyres with a fuel B rating to these barum Polaris 3 tyres that are a fuel E rated tyre it's about 3-5 MPG less depending on speeds.
But seriously for cold wet weather safety there great!
Shibby

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I've bought them in january 2016 for my winter set on steel wheels. Seat Ibiza 1,4 86HP. First two seasons very good,after that they are a bit harder but quite ok. Driving on them here in Vojvodina(Serbia) and Hungary from oktober to march. During january 2019 tested in very hard snow and icy roads,job well done. Satisfied. They are cheaper brand of Continental-made in Slovakia,for my dimensions, but they are Czech brand. Wear is excellent. Not loud tyre. Good choice for normal drive. Recommendations. Closest relatives are Viking,Matador,Sportiva and Gislaved tyres...mid range,should buy it. Winter is not for sporty drive. I wish u all many happy kilometres and drive carefully.

The basic tyre for moderate driving. When I want to push it to the limit, it isn't perfect. But for 90% of journeys it is OK. When you want cheap and good tyre, Barum is the right choise.

Bought winter 2017. Snow grip was ok and I was able to get up steep hills covered in snow.
Dry and wet grip was adequate on the move, but the rear tyres would often struggle to grip from standstill in wet or dry.
Tyre wear was poor with the rears only having 3mm tread after 6,000 miles. The fronts had 6mm remaining.
I will use the fronts for another Winter, but the rears need replacing.

price is ok not bad at all

Got the tyres brand new and used for 1 winter. Quite good grip on wet, snow, and around curves. Excellent breaking qualities even on wet, so one could rely on that too. Safely took me home when the highway was closed and most cars could not or barely moved through the snow. I drove with 60km/h and felt the car rather stable through the blizzard. Definitely recommend!

Quiet
Very good value for money

Haven't run them for a long time. The tires seem comfortable and stable on small patches of ice. A little bit noisy, but it doesn't bother me. For now , I would recommend .
Bought them at a sale for 28 GBP each.

I am on my second season in Ontario Canada and at about 20,000km driven on this tire. They have performed well and I feel comfortable driving in all conditions. Especially better in the dry cold than other winter tires I have used in the past.

Exceptional winter Tyre. Best Tyre I've used yet on wet roads and offers lots of traction and safety on snow and ice. Only covered 3000 miles, but Tyre looks like new. Easy and comfy to drive on, but also surprisingly agile and sure footed when pushed. Best winter Tyre I've used to date, ideal for cold wet British roads.

Fitted to our Mazda 6 from November 2013 to present, on 16 inch steels.

Wouldn't hesitate to recommend these. We haven't had any snow this year but LOTS of rain. The car feels extremely sure footed and these tyre really inspire confidence in the wet and at low temps. They are excellent when you hit standing water; they just cut through with no fuss.

Exelent grip on dry, wet and wet snow. Couldnt try them in deep snow but they say it is where they are best. Not very noisy. And for the price of 37 euros per tire fitted! Highly recomended!

The best WINTER tire !The grip is so good.Excellent on snow and ice, moderate performance at temperature above 10 degree C.Highly reccomended!!