Tread or belt separation appears in 24% of these reports; about 1.8× as often as across all tire complaints. Percentages are shares of the 759 reports covering every model year of the Cooper that include a written account; a single report can describe more than one problem, so they do not total 100%.

Reported problem	This subject	All tire complaints	Relative
Tread or belt separation	24%	13%	1.8×
Blowout or sudden deflation	21%	20%	1.0×
Sidewall failure	21%	15%	1.4×
Bubble or bulge in the tire	12%	6%	2.0×
Loss of control, rollover or collision	9%	8%	1.0×
Cracking or dry rot	7%	9%	0.7×

Mileage at failure

446 of these reports state an odometer reading. The middle report is at 42,999 miles, with 8 in 10 falling between 5,219 and 155,000 miles.

In owners' own words

Verbatim excerpts from complaints filed with NHTSA about Cooper. Reports are published by NHTSA as filed and are lightly cleaned here only to remove intake codes.

THE CONTACT OWNS A 2007 DODGE RAM 2500 WITH COOPER DISCOVER ST TIRES, SIZE: 35X12.50R17LT. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 70 MPH, THE REAR DRIVER'S SIDE TIRE DELAMINATED FROM THE CORE TREAD AND PEELED, CAUSING BODY DAMAGE TO THE VEHICLE AND DAMAGE TO THE PARKING BRAKE CABLE MOUNT. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE TIRE WAS REPLACED. THE APPROXIMATE FAILURE MILEAGE OF THE TIRES WAS 25,000. THE VEHICLE FAILURE MILEAGE WAS 30,000.

NHTSA complaint 1007503

THE CONTACT OWNS A 2007 DODGE RAM 2500 WITH COOPER DISCOVER ST TIRES, SIZE: 35X12.50R17LT. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 70 MPH, THE REAR DRIVER'S SIDE TIRE DELAMINATED FROM THE CORE TREAD AND PEELED, CAUSING BODY DAMAGE TO THE VEHICLE AND DAMAGE TO THE PARKING BRAKE CABLE MOUNT. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE TIRE WAS REPLACED. THE APPROXIMATE FAILURE MILEAGE OF THE TIRES WAS 25,000. THE VEHICLE FAILURE MILEAGE WAS 30,000.

NHTSA complaint 1007504

THE CONTACT OWNS FOUR COOPER ZEON SPT TIRES, SIZE 205 55 R16. THE CONTACT WAS ROTATING THE TIRES, WHEN HE NOTICED THE FRONT DRIVERS SIDE TIRE WAS BALD. THE TIRES WERE INSPECTED AND THE CONTACT WAS ADVISED THAT THE TIRES WERE DOWN TO THE WEAR BAR. THE TIRES WERE NOT REPLACED. THE TIRE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE CURRENT VEHICLE MILEAGE WAS 100,00 AND THE APPROXIMATE TIRE MILEAGE WAS 8,000.

NHTSA complaint 1016065

THIS IS THE SECOND SAME SIZE COOPER TIRE THAT HAS FAILED THE SAME WAY IN THE SAME TIME FRAME. THE TIRE WAS PROPERLY INFLATED AND BEGAN TO LOSE AIR EVEN THOUGH IT HAD NO PUNCTURES IN THE TIRE. THE TIRE STARTED TO RUN LOW AND THE SIDEWALL CRACKED AND DID NOT DEFLATE BUT RAN WITH LOW PRESSURE. I NOTICED THAT THE TIRE WAS LOW BUT NOT DEFLATED. UPON EXAMINATION OF THE TIRE THE SAME CRACKS APPEARS ON THE SIDE WALL AND NOTHING WAS HIT THAT HAD ABRADED THE TIRE. BOTH TIRES WERE SIZE 215/50 R17 CS4 V XL BW 95 TL. BOTH TIRES LASTED APPROX 15-17K MILES BEFORE FAILING AND APPROX 2 YEARS IN EACH CASE. ONE WAS REPLACED BY THE TIRE DEALER ONLY BECAUSE I HAD BOUGHT THE TIRE PROTECTION POLICY AND THE OTHER WAS NO LONGER COVERED AS REPLACEMENTS ARE NO LONGER COVERED AFTER 12K OR 1 YR. BOTH TIRES COULD NOT BE REPAIRED AS THE SIDEWALL HAS FAILED.

NHTSA complaint 1024001

Complaints are voluntarily submitted to the NHTSA Office of Defects Investigation and are not verified by NHTSA; they represent owner-reported problems, not proven defects. Counts can be useful as a relative quality signal across comparable tires or vehicles.

Specs

Brand	Cooper
Model	Discoverer HT3
Season	N/A
Type	N/A
UTQG treadwear	N/A
UTQG traction	N/A
UTQG temperature	N/A
Mileage warranty	N/A
Noise (dB)	N/A
Introduced	N/A

Live prices

Live prices for this tire are being verified. Use the shop links below to compare across our online retailer partners.

Shop online → Compare prices → Get a quote →

Available sizes (15)

Cooper discoverer HT3: what the numbers tell you

Manufacturer treadwear data for the Discoverer HT3 is not publicly listed. This is common for OEM-only or track-day tires that don't carry a US treadwear warranty. No mileage warranty is published for this tire, which is typical for performance summer and track-day rubber where the manufacturer doesn't make wear-life claims.

Cabin noise data for this tire is not published by the manufacturer. As a general tire built for the passenger segment, the Discoverer HT3 is positioned against direct rivals within the same category. Comparing it to a tire in a different category (e.g. summer vs all-season) makes the spec sheet misleading because the design targets are not the same.

Introducing the Cooper Discoverer HT3, a high-quality tire designed to enhance your driving experience with outstanding performance and reliability. This tire is engineered by Cooper, a trusted brand known for its commitment to excellence and innovation in the tire industry. Whether you're cruising on the highway or navigating city streets, the Cooper Discoverer HT3 is built to deliver exceptional performance and durability. The Discoverer HT3 features an advanced all-season tread compound that provides excellent traction on various road surfaces, ensuring reliable grip and confident handling in both wet and dry conditions. This tire is designed to maintain stability and responsiveness, offering a smooth and comfortable ride for you and your passengers. One of the key highlights of the Discoverer HT3 is its optimized tread pattern, which incorporates multiple sipes and grooves. These features work together to enhance traction and channel water away from the tire's contact patch, reducing the risk of hydroplaning and improving overall wet weather performance. Durability is a top priority in the Cooper Discoverer HT3. The tire is constructed with a strong internal structure that enhances its resistance to cuts, chips, and other forms of damage. This ensures that the tire maintains its integrity even in demanding driving conditions, making it an ideal choice for light trucks, SUVs, and crossovers. Does the Cooper Discoverer HT3 excel in performance and durability and it also offers a quiet and comfortable ride. Its advanced noise-reduction technology minimizes road noise, allowing for a peaceful driving experience on any journey. With its exceptional performance, durability, and comfort, the Cooper Discoverer HT3 is a versatile tire that meets the needs of drivers seeking reliability and longevity. Whether you're commuting to work, embarking on a road trip, or simply running daily errands, this tire provides the confidence and peace of mind you deserve. Invest in the Cooper Discoverer HT3 and experience the perfect blend of performance, comfort, and reliability on your next adventure. Drive with confidence and enjoy every mile knowing you have a tire that can handle whatever the road throws your way.

For an apples-to-apples comparison against direct rivals, see the comparison pages linked from this tire's brand index.

OEM fitment

Vehicles that ship with this tire

1993

Top tires that fit

ACTN

Ap 580

ACTN

Dr 680

ACTN

Dr 780

ACTN

Tr 280

AFW

Discoverer HT3

Retailer pricing & reviews

NHTSA-reported issues for cooper discoverer HT3

What owners described

Mileage at failure

In owners' own words

Specs

Live prices

Available sizes (15)

Cooper discoverer HT3: what the numbers tell you

Vehicles that ship with this tire

Toyota T100

Toyota T100

Toyota T100

Toyota T100

Toyota T100

Toyota T100

Honda passport

Honda passport

Ford bronco

Ford bronco

Ford bronco

Ford bronco

Top tires that fit

Ap 580

Dr 680

Dr 780

Tr 280

Octane