Discoverer M+S™

Fits SUVs/CUVs and Trucks/Pickups Winter

Discoverer M+S™ is rated 4.3 out of 5 by 46.
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Standard Limited Warranty
Free 45-Day Road Test
Severe Weather Rated
Studdable

The Discoverer M+S™ is the winter tire specifically designed for SUVs and light truck vehicles.

  • Pinned for studs
  • Severe weather rated
  • Extensive size coverage

M+S Rated

Features

Dry Performance

The tire’s ability to grip the road in dry conditions.

Wet Performance

The tire’s ability to grip the road in wet conditions.

Tread Wear

The wear rate of the tire.

Quiet Ride

The measure of how quiet a tire is while driving.

Handling

How the tire is able to respond to driving such as accelerating, braking, steering and turning.

Off Road

The tire’s ability to have grip on unpaved surfaces such as dirt, mud, sand, rock or gravel.

*When compared to other Cooper® tires.

Tire Design

  • Patented Snow Groove™ Design

    Creates increased traction through snow-on-snow grip.

  • Sawtooth Center Rib

    Increases stability, maintains even treadwear, and aids in acceleration and braking.

  • "D Squared" Sipe Technology

    Adds sipe density and depth for improved winter traction through-out the tire's life.

  • Strategically Placed Stud Pin Holes

    Studs deliver optimum traction on ice.

Full Specs

Tire Size Service Description UTQG Load Range Sidewall Approved Rim Width Measured Rim Width Section Width Overall Diameter Tread Width Tire Weight Max Load Tread Depth (1/32")
225/70R14 99S STD BLK 6 - 7.5 6.5 9.1 26.26 7.01 27 1709 15
235/75R15 105S STD BLK 6 - 8 6.5 9.6 29.02 7.13 33 2039 15
235/75R15 109S RE BLK 6 - 7.5 6.5 9.4 29.02 7.2 36 2271 15
265/75R15 112S STD BLK 7 - 9 7.5 10.7 30.59 8.11 37 2469 15
235/70R15 103S STD BLK 6 - 7.5 7 9.6 27.99 7.4 30 1929 15
265/70R15 112S STD BLK 7 - 9 8 10.4 29.45 7.99 36 2469 15
225/75R16 104S STD BLK 6 - 7.5 6 8.7 29.17 6.81 30 1984 15
235/75R16 108S STD BLK 6 - 8 6.5 9.3 29.84 7.01 33 2205 15
245/75R16 111S STD BLK 6.5 - 8 7 9.6 30.39 7.4 36 2403 15
265/75R16 116S STD BLK 7 - 9 7.5 10.6 31.61 8.11 40 2756 15
215/70R16 100S STD BLK 5.5 - 7 6.5 8.8 27.76 7.2 28 1764 15
225/70R16 103S STD BLK 6 - 7.5 6.5 9 28.31 7.01 30 1929 15
235/70R16 106S STD BLK 6 - 7.5 7 9.4 28.86 7.4 32 2094 15
245/70R16 107S STD BLK 6.5 - 8 7 9.8 29.49 7.72 35 2149 15
255/70R16 111S STD BLK 6.5 - 8 7.5 10.3 29.88 7.99 35 2403 15
265/70R16 112S STD BLK 7 - 9 8 10.8 30.39 7.99 38 2469 15
255/65R16 109S STD BLK 7 - 9 7.5 10.2 29.17 8.27 35 2271 14
245/70R17 110S STD BLK 6.5 - 8 7 9.8 30.51 7.72 35 2337 15
255/70R17 112S STD BLK 6.5 - 8.5 7.5 10.3 31.22 8.19 41 2469 15
265/70R17 115S STD BLK 7 - 9 8 10.7 31.42 8.31 39 2679 15
235/65R17 104S STD BLK 6.5 - 8.5 7 9.4 29.06 7.76 33 1984 14
245/65R17 107S STD BLK 7 - 8.5 7 9.8 29.53 9.25 34 2149 14
255/65R17 110S STD BLK 7 - 9 7.5 10.1 30.2 8.5 37 2337 14
255/70R18 113S STD BLK 6.5 - 8.5 7.5 10.3 32.2 8.19 41 2535 15
275/65R18 116S STD BLK 7.5 - 9.5 8 11 32.17 9.09 44 2756 14
255/55R18 109S RE BLK 7 - 9 8 10.4 29.13 8.9 38 2271 14
275/60R20 119S RE BLK 8 - 9.5 8 10.9 33.03 9.21 48 2998 14
275/55R20 117S XL BLK 7.5 - 9.5 8.5 11 32.05 9.41 44 2833 14
LT235/75R15 104\101Q C BLK 6 - 7 6.5 9 28.82 7.2 35 1985 17
31X10.50R15LT 109Q C BLK 7 - 9 8.5 10.5 30.24 8.19 42 2270 19
LT215/85R16 115\112Q E BLK 5.5 - 7 6 9.1 30.28 5.91 37 2680 17
LT235/85R16 120\116Q E BLK 6 - 7.5 6.5 9.3 31.77 6.93 41 3042 17
LT225/75R16 115\112Q E BLK 6 - 7 6 8.9 29.29 6.69 35 2680 17
LT245/75R16 108\104Q C BLK 6.5 - 8 7 9.6 30.43 7.44 40 2205 17
LT245/75R16 120\116Q E BLK 6.5 - 8 7 9.6 30.43 7.44 43 3042 17
LT265/75R16 123\120Q E BLK 7 - 8.5 7.5 10.5 31.54 8.15 47 3415 17
LT265/75R16 112\109Q C BLK 7 - 8 7.5 10.3 31.54 8.15 43 2470 17
LT285/75R16 126\123Q E BLK 7.5 - 9 8 11.4 32.56 9.02 54 3750 17
LT235/80R17 120\117Q E BLK 6 - 8 6.5 9.4 31.85 7.01 43 3085 17
LT245/75R17 121\118R E BLK 6.5 - 7.5 7 9.9 31.81 7.64 46 3195 17
LT245/70R17 119\116Q E BLK 6.5 - 8 7 10.1 30.43 7.44 44 3000 17
LT265/70R17 121\118Q E BLK 7 - 8.5 8 11 31.65 8.39 49 3195 17
LT265/70R18 124\121R E BLK 7 - 9 8 10.7 32.64 8.62 52 3525 17
LT275/70R18 125\122R E BLK 7 - 8.5 8 10.9 33.15 9.02 54 3640 17
LT275/65R18 123\120R E BLK 7.5 - 9.5 8 11.1 32.09 8.9 52 3415 17
LT275/65R20 126\123R E BLK 7.5 - 9.5 8 11.1 34.17 9.02 58 3750 17

Reviews

Rated 3 out of 5 by from Good in snow but don't last. These tires are good in snow, that's why I bought them. I snow plow and I never got stuck. I have had them for about 2 years and less than average mileage on them. Last year I had to replace one for hitting a pothole. The cords could not it. Now I have to replace another one I believe for the same reason. So I wouldn't recommend these tires unless you drive on perfect roads or are able to swerve in traffic to be able to miss the potholes.
Date published: 2019-08-24
Rated 5 out of 5 by from Absolutely top notch On our 4th winter season on these tyres they still perform very well. Ours are not studded, and we don't miss the studs at all, even when "everyone" says studs are mandatory on SUVs where we live (Norway). Very precise in all maneuvers: Ice, hard snow, dry snow, wet snow, wet or dry tarmac. They gets very soft in temps above +10°C, so not meant for several plus degrees, can't complain on this as they are pretty much the perfect winter tyre. Quite high rolling resistance, so they reduce mpg by approx 10%. Now I cannot find them anymore at tyres stores, so I'm afraid I will have to buy something else next time :-( '06 Mitsubishi Pajero/Shogun/Montero LWB 3.2 DiD, 245/70-17.
Date published: 2019-02-25
Rated 1 out of 5 by from Worst snow tire ever! I have a 2015 Chevy 2500, and was told these tires were as good as Goodyear Ultra grip ice WRT. Not even in the same league. I should have waited till the Goodyear were available. As I live in winter most of the year, and have owned many different snow tires, I can attest these are the worst I have ever owned. With the Goodyear, I almost never had to put in 4WD, and with the Coopers, I can never take it out, on simple packed snow. Thanks Cooper!!
Date published: 2019-02-09
Rated 5 out of 5 by from Great for towing in mountain passes These tires on an F-250 4x4 are terrific in the mountains of WA & ID. I tow a 7000lb bunkhouse travel trailer to the ski hill as often as time will allow. The M+S are mountain snowflake rated and they have carried my family home from some of the best skiing / worst driving conditions imaginable. I’ve seen pileups, pass closures and safety checkpoints and the snowiest conditions I’ve ever seen and still hauled my family home safely. I run them without studs and use common sense in the iciest conditions. They wear fast in the warmer months so if you live in a warm climate take them off after the last frost. I am on my second winter of my second set of these tires. I got 4 winters and 1 summer on the first set. (They get soft and sticky when it’s 100 degrees outside). I just decided to leave them on when I knew I’d replace them in the fall.
Date published: 2018-11-30
Rated 5 out of 5 by from 3rd set & Love em' I just bought my third set and run them all year round on a Toyota Rav4 AWD. I have been getting about 65 - 70,000 km using them this way. They work great in winter and hold up decent all year. Great value tire!
Date published: 2018-11-24
Rated 5 out of 5 by from These tires are amazing! I live in Northern New-Brunswick where we have some of the harshest winters. My All-Terrains (Goodyear Wrangler Duractracs) were getting a little worn out so I decided to get myself some Cooper M+S tires for Winter only. I got them in a 275/65R20, which is slightly bigger than the OEM size of 275/60R20. I got them studded and installed on the stock Ram wheels. The extra height is nice and they look great on my truck. These tires are technically designed for 3/4 ton trucks so they're slightly overkill for my truck but I love them cause they look good, give me extra clearance and they handle really well (probably cause they are a little stiffer to handle more weight). So far I'm really satisfied, they're well balanced and not noisy at all (quieter than my duratracs). I'm hoping to be able to run them for 4 or 5 years during winter only and swap back to All-Terrains for summer. If I can get at least 4 years out of them I'll be happy with the extra I paid for the 34" tires. The highway this morning was covered with packed snow and the wind is gusting 60-100 km/h. I usually white knuckle my way to work hoping the wind doesn't push my truck in the opposing lane. Not with my new Cooper M+S tires, I've never felt so confident at the wheel during/after a winter storm. I'm a new fan of Cooper Tires, I'll be replacing my Duractracs with the new AT3 XLT next summer.
Date published: 2018-11-14
Rated 5 out of 5 by from Great winter tire Live in the Keweenaw Peninsula of UP of Michigan. Get at least almost 300 inches of snow in the winter. I just have a FWD SUV and it outperforms AWD's. For example going up this one icy hill and I got up it without trouble even passed two AWD SUV's that got stuck on the hill.
Date published: 2018-10-28
Rated 5 out of 5 by from Best Winter Tire I've Owned I live in Canada and have driven a pickup truck for most of my driving years. I used to be very attached to the BF Goodrich TA All Terrain tires and used them year round. They are an amazing tire and, if I had to choose just one tire for year-round wear, I may still go with them, but there really is no substitute for good summer and winter tires. I've run these tires for two winters now and just put them back on for a third. I expect to see at least two more winters out of them before I wear them for a summer to burn them right out. I'll get 100,000K out of them for sure before I have to buy more...and I will definitely buy these again. Anybody looking for a good WINTER tire should look into these. If you want an all terrain, I wouldn't suggest these as they wear a little worse in warm weather. Thanks Cooper, you make a great piece of rubber.
Date published: 2018-10-26
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Warranty

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