What's this? Overall score emphasizes safety-related tests, including braking, handling, and resistance to hydroplaning. Displayed scores are rounded; models are listed in order of precise overall score.
Approximate retail price:
Summary:An all season tire designed for light duty pickups and SUVs. It has a 70,000 mile treadwear warranty.
The Cooper Discoverer CTS is part of the tire
test program at Consumer Reports. In our lab tests, all season truck tire
models like the Discoverer CTS are rated on multiple criteria, such as those listed below.
Dry braking is from 60 to 0 mph.
Wet braking is from 60 to 0 mph.
Handling includes how well the tires gripped in an avoidance maneuver involving a swerve into the left lane and back into the right lane; wet and dry cornering grip on our skid pad; and subjective steering feel.
About This Brand
One of the few independent tire manufacturers in the U.S. with origins going back to the early 20th Century, Cooper is among the world's top-10 tire makers. Based in Findlay, Ohio, Cooper Tires offers a full array of tires, including the Avon, Mastercraft, and Starfire brands. Cooper tires are most often sold by independent dealers, though they can be found online. In the past, Cooper has been a standout among light-truck tires.
Features & Specs - Cooper Discoverer CTS
Size tested The size of the tested model.
Speed rating Speed rating. This letter denotes the maximum sustainable speed and is found directly after the load index. For S-speed-rated tires, it's 112 mph; for T, 118 mph. Speed ratings for other tires include Q, 99 mph; H, 130 mph; V, 149 mph; and Z, 150 mph plus. While such speeds may seem wildly impractical, tires with higher speed ratings tend to provide better handling at legal speed limits. Choose tires that have a speed rating at least as high as the one specified on your vehicle's placard.
Treadwear warranty Commonly used by tire manufacturers to market tires, the warranty describes the typical tread life of the tire. Consumers should view the warranty an indicator of tread life only. Actual mileage will vary with vehicle type, driving style, road, and weather conditions, just to name a few variables. Nearly all treadwear warranties are based on pro-rated amount based on the usable tread worn off the tire.
UTQG treadwear UTQGS, which stands for Uniform Tire Quality Grading System, is a federal government required grading system for passenger tires excluding winter tires. Key information includes Treadwear, Traction, and Temperature appearing on the sidewall of a tire. UTQG treadwear, an index developed by the government, compares a tire's tread life with that of a reference tire graded at 100. A tire with a grade of 300 is predicted to last three times as long as one graded at 100. Treadwear grades are just one indicator of tread life, but actual tire life will vary due to a number of factors including road conditions, driving habits, vehicle, and maintenance.
UTQG traction UTQGS, which stands for Uniform Tire Quality Grading System, is a federal government required grading system for passenger tires excluding winter tires. Key information includes Treadwear, Traction, and Temperature appearing on the sidewall of a tire. UTQG traction indicates the tire's ability to stop on a wet surface with Government grades of AA, A, B, C, from best to worst.
UTQG temperature UTQGS, which stands for Uniform Tire Quality Grading System, is a federal government required grading system for passenger tires excluding winter tires. Key information includes Treadwear, Traction, and Temperature appearing on the sidewall of a tire. UTQG temperature indicates the tire's ability to resist heat build-up under test conditions with Government grades of A, B, C, from best to worst.
These are good tires until you figure tread wear. They are quiet, handle well in all conditions including ice and snow. The downside is tread life. We have about 45,000 miles on them and will need to be replaced shortly. The dealer blames it on poor rotation schedule except they have been rotated every 6000. The recommended is 7500 so I guess I rotated them too much. Also, they state Cooper will not honor warranty unless you have proof of each rotation meaning you need a receipt so you can't rotate them yourself. If you skip or are over on one rotation then the warranty is not allowed. Best I can see is these are a good 50,000 mile tire and should be marketed as such. The price is typically about $30 less than a comparable Michelin with a true 65000 wear out so they probably figure out to about the same overall value.
How long have you owned it:
More than six months
No, I would not recommend this to a friend.
One of the Best
going for my second set after getting 74000 on the first. Great tire that got me threw the winter of 2010!
How long have you owned it:
More than six months
Yes, I would recommend this to a friend.
By Green Mountain guy
from Rutland, VT
Not too happy
Mounted on my 2007 Toyota 4Runner. First noticed that the tires tend to want to pull the vehicle into road track depressions, the lower tracks in the road that are caused by vehicle traffic. They also pull the vehicle across some ridges or cracks in the road. In other words, it feels like the tires are trying to take steering control away from the driver in these conditions. They don't feel safe.<br />Gas mileage took a big dive. The 4Runner dash display always showed around 17.5 mpg in city driving and around 19.6 in mixed city/highway driving. Since mounting these tires city mileage averages 14.4 mpg and mixed mileage averages 16 mpg.<br />I was offered the opportunity to take the tires back to the dealer within 90 days if not satisfied. At around 70 days, they're going back.