Michelin Pilot Alpin 5 315/30R21XL 109V Light Truck & SUV Tire

I've driven 10,000+ kms during the winter of 2019/2020, 90% of my driving is on the QEW/400-series highways in Ontario. Mercedes recommends 17" wheels for the GLK, but having 20" OE wheels with AMG package I opt'd to go with 19" wheels to maintain handling, and I never regretted it. The tires are quiet, comfortable, corner and turn-in well, and soak up the potholes. Although I've never had the opportunity to try it in deep snow conditions, traction in dry and wet/snow is excellent, and able to handle turbo-diesel torque in high boost conditions, allowing seamless thrust with the 4Matic all-wheel drive system regardless of weather. I've also noticed the benefit of quick recovery time when the tire hydroplanes in wet snow/slush/rain. The only downside would be a bit of tread squirm under hard/panic braking, but it's to be expected with the narrow tread blocks (Alpin A4 winter tires did the same; similar tread design); on a SUV it would be more noticeable than on a car due to more weight transfer. If you're a hard braker, then the Pilot Alpin PA4 might be the better choice. For most people, this tire is an excellent choice for urban areas. Previously, I've purchased Pilot Alpin PA2/PA3/PA4's, X-Ice3 and Alpin A4's, and await installation of the X-Ice Snow on another vehicle---I've always been happy with the performance of the Michelin family of winter tires; my number one choice if available in my tire size. Highly recommended!

Big snow fall early Nov. here in Ontario. First time out in snow on these and wow they are awesome. Tried to test myself to see how much glide, slide, grip and stop was on these and I was super impressed. They gripped like a champ and I felt super in control. Great comfortable and responsive ride. SO thrilled I purchased the for my car.