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Buy 3 Select Tires, Get the 4th Free Instantly
Buy 3 Tires, Get 4th Tire Free Instantly. Receive a discount equal to the price of a single tire when four tires are added to the cart. Valid on select in stock tires only. Those tires for which discount is available will be identified in search results & product detail pages. All other tires and special order tires are excluded from this offer. Valid when scheduled for installation on PepBoys.com and installation is completed between 4/28/16 through 5/4/16.

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Pep Boys Germantown  20900-A Frederick Rd 
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Manassas, VA
8000 Stream Walk Ln
Manassas, VA 20109

Annandale, VA
7121 Little River Turnpike
Annandale, VA 22003

Frederick, MD
1120 W Patrick St
Frederick, MD 21703

Tire Size
255/55R18
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  • Size: 255/55R18
  • Part #: 19934|
  • SKU: 10001966|
  • (P) Passenger

0
Mile
Warranty

109T
Service
Description

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Cooper Discoverer H/T Plus

The Discoverer H/T Plus is an extension of Coopers Discoverer HT SUV light truck touring line that features sport truck and original equipment sizing in a non-directional platform. It provides an excellent replacement for the 20-inch original equipment fitments on full size pickups and SUVs as well as plus fitments for drivers seeking to upgrade the looks and handling of their vehicles. Promo
  • Plus fitment for light truck users looking to upgrade their vehicles look
  • Optimized pitch sequence on tread elements for a quiet ride
  • See through grooves, wide lateral traction slots and high sipe density for excellent all weather traction
Cooper Tire founded in 1914 by Ira J. Cooper. Cooper is the 9th largest global tire manufacturer and 4th largest in the U.S.A. Cooper Tire's focus is on the replacement market, offering value, quality products and exceptional service to our customers. Cooper Tire manufactures a wide range of passenger, light truck and radial medium truck tires.

Warranty
Tire Size
255/55R18
Tire Type
Speed Rating
Load Index
Load Range

SERVICE DESCRIPTION

Safety Rating is a combination of two values: Load Index and Speed Rating for P-Metric and Euro Metric tire sizes; and Load Range and Speed Rating in the case of heavy duty LT (light truck) sizes.

Speed Rating is based on the speed that the tire is designed to be driven at for extended periods of time. All tires in the in the U.S. are designed to maintain legal U.S. speed limits. The speed rating of tires must match the maximum driving speed of the vehicle.

Load Index is used on P metric and Euro Metric sized tires and denotes a tire's load-carrying capacity at a specified inflation pressure. The load index is represented by a number, the higher the Load Index Value the greater the load the tire can safely carry. Vehicle manufacturers recommend a maximum load capacity based on a recommended minimum load index.
(P) Passenger
T
109
N/A
Tire Class

TIRE CLASS

Tire Class reflects how the tire will be used. There are four major categories: All-Season, Max Performance, Summer-Only and Winter-Use.

All-Season tires are suitable for year-round driving in all weather conditions.

Summer-Only & Max Performance tires are specifically designed for high-performance driving. Tire compound, tread design and speed ratings all combine to hug the road and maintain grip. Summer tires by nature are not ideal for winter driving due to lack of siding to grip winter roads.

Winter-Use tires have tread compounds and patterns that are specially designed for grip on snowy or icy road surfaces. They are not suitable for year-round use. The rubber compound used will wear more quickly on dry, summer roads. It is recommended that winter tires are fitted as a complete set to avoid potential handling issues.
Everday Use
All Season

Off-Road

Summer-Only

Winter-Use
Tread Type

TREAD TYPE

Tread Type is an important consideration when choosing a tire. There are four main types: Passenger, Highway, All-Terrain and Mud-Terrain.

Passenger denotes a tread that is suitable for normal use, a good all-round tread for normal driving.

Highway is a tread type unique to SUV and truck tires. The tread is optimized for normal everyday driving on paved surfaces. These tires can be driven off pavement, but are not ideally suited for off road traction. Highway tread patterns deliver a quiet ride.

For light trucks and specialty vehicles, All-Terrain tread types provide better off-road traction than standard highway truck tires. There more aggressive tread tends to be less quiet on paved roads. All Terrain tires are suitable for everyday use.

Mud-Terrain treads are specifically designed with wider tread blocks and higher void ratios to gain traction in off-road conditions. Mud Terrain tires can generate higher noise levels and tend to carry lower mileage warranties than other tread designs.
Passenger
Highway
All-Terrain
Mud-Terrain
UTQG

UTQG - Uniform Tire Quality Grade

UTQG (Uniform Tire Quality Grade) is made up of three values: treadwear, traction and temperature.

Treadwear is a relative numeric score, based on manufacturer tests, showing how well a tire can be expected to wear compared to other tires. A higher score means a tire could be expected to wear better.

Traction measures the tire's ability to stop a vehicle on wet roads. It doesn't reflect a tire's acceleration, cornering, or hydroplaning performance. Traction grades range from AA (highest) to C (lowest).

Temperature grades the tire's ability to withstand heat build-up, with A being the highest grade and C the lowest.

A - Over 115 mph
B - Between 100 to 115 mph
C - Between 85 to 100 mph
Treadwear: 460
Traction Asphalt - gForce
AA - Above 0.54
A - Above 0.47
B - Above 0.38
C - Less Than 0.38
Temperature
Grades:
A - Over 115 mph
B - Between 100 and 115 mph
C - Between 85 and 100 mph

Drive / Ride Performance Characteristics

All tires have the following six performance characteristics, divided into three sets of trade-offs. In most cases, a tire may perform excellently in one characteristic but only standard in the other.
Standard Ride Comfort & Standard Handling
Handling: Get stiff side wall for precise steering and cornering but settle for a firm ride with increased road noise.
Ride Comfort: Enjoy a quiet, smooth ride but lose some cornering ability.
Standard Treadwear & Standard Traction
Traction: Stop faster in wet conditions but expect a shorter tread life.
Treadwear: Get long, uniform wear across your tread pattern but expect less traction in wet conditions.
Standard Low Rolling Resistance & Standard High Speed Performance
High-Speed Performance: Get increased performance at higher speeds but sacrifice some fuel economy.
Low Rolling Resistance: Enjoy improved fuel efficiency but expect less high-speed cornering ability.
Rated 4.7 out of 5 by 43 reviewers.
Rated 5 out of 5 by Smooth quiet ride. And cost friendly too. I have a 2012 GMC Sierra Denali AWD. The stock Goodyear LS2 tires were begging to come to the end of their life and I had done research on tires for about the last year. So when it came time to replace my LS2s I already had a pretty good idea what I was going to purchase. Initially I went with the Discover AT2 tires. They look nice and aggressive. Had lots of positive reviews. After about 600 miles on them I took them back. Something with them just didnt mesh with my Sierra. I think it was a wheel out of balance. But after talking with the tire technicians I swapped over to the HT Plus all the way around. The service folks unmounted the AT2's and put the HT Plus on within about an hour and half. We did an alignment as well to ensure that wasnt an issue with the feel I was getting. The service I received was top notch. Didnt cost me anything to swap out the tires, the customer must be satisfied they said. I cant say enough how pleased I am with the purchase just from a customer service standpoint alone! I have now put 2000 miles on the HT Plus tires. As it so happens I had an opportunity to test them in every weather condition in those 2000 miles. I had to go up to New York for a family emergency. We left in the rain. And while on the trip we had snow and sleet. I was very impressed with the handling through all the conditions. The ride is very smooth and quiet. The handling is very responsive. And they look good too. I would definitely recommend the tires to a buddy picking them up for their SUV or Truck. April 19, 2016
Rated 5 out of 5 by Great Tires, Good Service I recently put the Cooper Discovererer H/T Plus on my Dodge Ram, 20'' tires. What a difference from the tires that were on the truck. I have put about 1,000 miles on the tires since purchasing them and have driven in two snow storms and a pounding rain storm, the ride and handling from these tires were awesome. Even on dry road, there is a difference in the ride, very controlled. This is the third set of tires I have put on my truck, and by far, these are the best. If your looking for good tire, that is reasonably priced, this is the tire. I had Pep Boys install them, while I waited. They gave me an estimated wait time and finished the job in the allotted time. March 5, 2016
Rated 5 out of 5 by Very Happy with tire I normally don't write reviews how ever I hope this information helps. We live in Michigan and have snowy winters. These tire perform very well in light to moderate snow. On icy roads they grip well. Dry pavement VERY quiet. Cooper has hit a happy medium on these tires. I have had Cooper Discover AT3 on a previous truck they were noisy but had super traction in the snow. So if you have a full size 4wd that is used for all types of driving you will REALLY like these tires. We have these on a Tahoe 4WD with stablia trac and traction control. Tire size 275-55-20. January 24, 2016
Rated 5 out of 5 by Great tires I love my tires, good bang for your buck! October 8, 2015
Rated 4 out of 5 by Good product. Poor service. Good product. Installation of 4 1/2 hours. AYKM ! October 8, 2015
Rated 5 out of 5 by Cooper Discoverer H/T PLUS This is the 3rd set of these Cooper tires I have put on my 2007 Dodge RAM 5.7 HEMI with the 20" wheel option. Best tire for this truck. 50,000K miles easy with even tire wear, rotating every 5K miles. Needed tires in a hurry. Order tires online on a Saturday late afternoon, and had them installed on Sunday morning. It was nice they were open on Sunday. August 29, 2015
Rated 5 out of 5 by quiet and responsive Only have a few miles on them but so far I can hear that they are quiet and steering response is excellent. Hopefully mileage will be good and wear also. August 3, 2015
Rated 4 out of 5 by Cooper tires Have only had them for 3 weeks. Too soon to tell. Everyone at Pep Boys was very helpful and professional. Bryan answered any and all questions I had. Only problem I'm having right now is I'm getting the run around from Cooper tires regarding my $50 rebate. Not too impressed with THEIR customer service at this point. July 14, 2015
  • 2016-05-02 T10:10:58.277-05:00
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