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Cooper Discoverer STT Pro

Mud Terrain All Season

The Cooper Discoverer STT Pro is an all-season mud-terrain tyre whose owners most consistently praise traction on rock, mud and mixed trails. Road noise and mixed comfort and road manners are the main compromises, with too little winter experience for a firm snow or ice verdict.

The quick answer

Owners say 66% from 8 owner reviews 75% would buy again Read the reviews
Tests say Sorry, we don't currently have any test data for the Cooper Discoverer STT Pro
Strengths & weaknesses Traction on rock, mud and mixed trails Noticeable road noise Summarised from owner reviews

Built from every independent test result and vetted owner review we hold for this tyre - the evidence is all further down the page. Data updated September 2026.

  • 8owner reviews
  • 124,007miles driven
Cooper Discoverer STT Pro 1 photos

Tyre Reviews Score

Cooper Discoverer STT Pro

6.6/10

From owner reviews only: no measured test results yet.

  • Limited Confidence
  • 8 owner reviews

How this score is built

Better than Weight
Independent testsNo measured test results yet – 0%
Owner reviews8 owner reviews · rated 66% 22% 35%
Typical tyreWhere every score starts before its own data counts – 65%
Combined 29% 6.6

A fixed curve turns the combined figure into the 0 to 10 score, so roughly the top 10% of a group score 9 or more.

Confidence

  1. Limited
  2. Medium
  3. High

Owner reviews decide 35% of this score. The other 65% is the typical starting point, and it shrinks as more reviews arrive.

Scored on owner reviews alone, a tyre is High once the reviews decide 90% or more, and Medium from 70%. Anything less is Limited: expect the number to move as reviews arrive.
All Tests

Sorry, we don't currently have any magazine tyre tests for the Cooper Discoverer STT Pro

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Dimensions & Label Scores
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Size Range77 sizes available

30-325Width0-1350Profile15-22Rim2015First On Market

US ratingsUTQG grade and the maker's mileage warranty

Not gradedUTQG grade18-22/32"Tread depth (new)NoneMileage warranty

Popular sizes225/45 R17265/70 R17255/75 R17315/75 R16285/70 R17235/85 R16
Frequently Asked Questions
What treadwear rating and mileage warranty does the Cooper Discoverer STT Pro have?
The Cooper Discoverer STT Pro has no UTQG treadwear grade: winter and light-truck sizes are exempt. Cooper gives it no mileage warranty. New tread depth is 18-22/32" (14.3-17.5 mm), depending on size.
What do owners say about the Cooper Discoverer STT Pro?
Across 8 owner ratings the Cooper Discoverer STT Pro averages 66%. Owners rate Wear highest at 8.8 out of 10 and Ice Grip lowest at 2.3. 2 of those reviews come from owners past 10,000 miles. 67% of owners score it 70% or better.
How comfortable and quiet are the Cooper Discoverer STT Pro?
Owners rate the Cooper Discoverer STT Pro 6.3 out of 10 for comfort and noise across 6 reviews.
How well do the Cooper Discoverer STT Pro wear, according to owners?
Owners rate the Cooper Discoverer STT Pro 8.8 out of 10 for wear across 6 reviews. 2 of those reviews come from owners past 10,000 miles, and the typical review covers 5,500 miles.
Would owners buy the Cooper Discoverer STT Pro again?
75% of owners say they would buy the Cooper Discoverer STT Pro again, based on the 8 owner reviews that answered the question. 50% of them gave it the highest possible answer.
Owner Questions
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Cooper Discoverer STT Pro Owner Reviews

Review this tyre

What owners say summarised from 6 reviews

Off-road traction is the clearest shared positive for the Cooper Discoverer STT Pro, with favourable reports on rock, mud and mixed trails. One owner finds sand performance poor, so the praise does not extend equally to every surface. Road noise is mentioned as a drawback by around a third of the six owners, while comfort and road manners receive mixed comments. One end-of-life owner reports more than 20,000 miles from each of two sets, but most detailed wear praise comes from initial or unspecified-stage reviews and does not establish a general lifespan. Wet-road confidence is less reassuring in a small number of accounts, and there is no meaningful winter-use record.

What owners mention most counted across 6 reviews

Tap one to read only the reviews that mention it.

Owner ratings averaged from 8 ratings

  • Owner score 66%
  • Wear 88%
  • Dry Grip 78%
  • Handling 70%
  • Wet Grip 68%
  • Comfort 63%
  • Road Feedback 61%
  • Snow Grip 60%
  • Ice Grip 23%

Featured reviews

Most helpful 38%

“For a mud terrain tyre this is great. Good wear, great offroad and not bad on Road. Low noise in my case because the noisy dieselengine is louder than the tyres. Downsides are roadfeeling/feedback and rhat the tyres are...”

  • Ford 2001 Ford excursion 7.3 diesel
  • 3,000 miles
Read full review → 914 found this helpful
Most critical 50%

“Not driven in snow or ice so cannot comment. I am on my second set both have done more than 20k miles. for a mud terrain they have good road manners and howl before sliding in dry but are prone to suddenly sliding on...”

  • Land Rover Defender
  • 20,000 miles
Read full review → 7 found this helpful

All 6 Cooper Discoverer STT Pro reviews

Score spread across 6 written reviews
50%
Member
Initial Impressions

Not driven in snow or ice so cannot comment. I am on my second set both have done more than 20k miles. for a mud terrain they have good road manners and howl before sliding in dry but are prone to suddenly sliding on wet tarmac (like all MT tyres). I do 50% road 30% gravel 10% rock and 10% mud. Generally these are very good MT tyres but have stopped representing value at the available price point available in the UK. I have been offered some BFG MT for less per tyre. I replaced with Maxxis Bighorn 764`s which are louder, The performance between the Maxxis and Cooper are similar overall. (but only done a few hundred miles to compare so far.) Note both sets cracked (to the point of UK MOT failure) in the sidewalls before wearing out. Both sets at around 5 years old.

This owner's scores
  • Dry Grip 5
  • Wet Grip 4
  • Road Feedback 3
  • Handling 7
  • Wear 7
  • Comfort 4
  • Buy again 5
  • Snow Grip 5
  • Ice Grip 5
Helpful 7
38%
Member
For a mud terrain tyre this is great. Good wear, great offroad and not bad on Road. Low noise in my case because the noisy dieselengine is louder than the tyres. Downsides are roadfeeling/feedback and rhat the tyres are heavy because of stiff sidewalls. Great for offroad, but the comfort really suffers. Not bad tyre in itself, but its more my preferances and use make me want to buy bfgoodrich ko2 in 285/75r16 next time.
This owner's scores
  • Dry Grip 5
  • Wet Grip 5
  • Road Feedback 3
  • Handling 3
  • Wear 8
  • Comfort 3
  • Buy again 3
  • Snow Grip 3
  • Ice Grip 1
Helpful 914
79%
Member
Northern Ontario, Canada. Two lane highways, bush roads, lots of trails, and made a couple new trails. 2014 Jeep Wrangker 2 door. All stock. Just ran these for a season April - November. Mix of road and trail. They did very well in mixed off road, sharp rock, gravel, mud, rust, smooth rock, wet/dry, bush roads. No issues. Clawed their way through everything. No cuts, no punctures, no issues. On road, not bad either. I didn’t experience an hydroplaning on highway (55mph/90kmh). Wearing very well, light feathering. 12,000 kilometres / 7,500 miles. Rotated once at 7,500 Km’s. 5 tires rotation. Swapping out to winter tires now. Wouldn’t use them for winter. Snow maybe, but not cold temps or ice. Less noise on pavement than I expected, that is subjective, but I expected worse from these. All in all, I would buy these again and recommend them.
This owner's scores
  • Dry Grip 10
  • Wet Grip 9
  • Wear 10
  • Comfort 8
  • Buy again 10
  • Snow Grip 7
  • Ice Grip 1
Helpful 911

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788 reviews submitted this month Earn your Contributor badge No account needed
86%
Member
one of ny best sets super happy with them
This owner's scores
  • Dry Grip 9
  • Wet Grip 9
  • Road Feedback 7
  • Handling 9
  • Wear 9
  • Comfort 7
  • Buy again 10
  • Snow Grip 9
Helpful 813
74%
Member
Very tough tires. I have been extremely happy with them over the 3000 miles I have put on them. I have ONE big issue though, they suck in the sand. Doesn't matter how low you go with pressure, they just dig and dig and dig into the sand. It is for this reason that I have to find another tire. Great otherwise on rocks in Moab, washboard in Death Valley and dirt and mud elsewhere. Drove all the way to Moab from Los Angeles in the a thunderstorm for several hours and now issues at all. Always felt stable. And this is in a 1993 Range Rover.
This owner's scores
  • Dry Grip 8
  • Wet Grip 7
  • Road Feedback 7
  • Handling 6
  • Wear 9
  • Comfort 7
  • Buy again 8
Helpful 887
81%
Member
great all rounder built strong for off road /mud/ rock these tyres just don't want to get stuck . on the road there is a little noise but you soon get used to it , be aware the road holding will not match all terrains because of the large block tread pattern so on wet roads these will not grip aswell . as for wear my tyres have covered about 8000 miles and are still like new I used to use wrangler at's tyres and find the wear and ride quality is no worse with the stt pro's , in my opinion these tyre are a great all rounder hard wearing and can be found for very reasonable price you cant go far wrong ,
This owner's scores
  • Dry Grip 8
  • Wet Grip 6
  • Road Feedback 8
  • Handling 8
  • Wear 9
  • Comfort 8
  • Buy again 10
Helpful 764
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