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Cooper

Cooper Discoverer STT Pro All-Season LT305/60R18 126/123Q Tire

Based on 2 reviews
Condition: New
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$492.99

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Availability: Only 2 left in stock, order soon!
Fulfilled by Autoplicity ✅
Arrives Monday, Nov 9
Order within 4 hours and 43 minutes

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At a glance

Condition
New
Size
LT305/60R18 126/123Q
Dimensions
32.68 x 32.68 x 12 in
Weight
66 lb
Rim Size
18 in
Section Width
30.5 cm
Speed Rating
Q
In the box
Tire Only

Features 5

  • All-Season Off-Road Traction Tire
  • The most extreme all-season, off-road tire Cooper offers to date
  • Provides remarkable off-road performance without sacrificing on-road traction
  • Tread design helps to prevent stone retention

Description

The Cooper Discoverer STT Pro All-Season LT305/60R18 126/123Q Tire is the most extreme all-season, off-road tire Cooper offers to date, providing remarkable off-road performance without sacrificing on-road traction. The Discoverer STT Pro tire delivers best-in-class off-road performance, empowering the extreme off-roader to take on the toughest challenges. Patented Armor Tek3 tire technology adds strength to the tire sidewall, providing increased resistance to damage while driving over boulders and uneven, tough terrain. The Discoverer STT Pro comes with rubber formulated to combat shredding and damage from stones and off-road obstacles. The ROCK CLIMBER SIDEWALL gets max traction to help conquer even the toughest obstacles with deep ‘Climber Cleats’ and Flex Grooves built into the side of the tire that grip jagged rocks and power through thick mud. The MUD SLINGERS 2.0 are deep, wide trenches with additional notches throughout the tread combine to give you more grip to power through and help continuously clear thick mud from the tire. The EARTH DIGGERS can tackle tricky terrain with large blocks with alternating mud scoops that forcefully dig into loose dirt, sand or sticky mud. The STONE ARMOR TECHNOLOGY provides the ultimate durability with channels, ridges, and edges designed to help defend against sharp rocks and debris while expelling lodged stones.

Specs 33

Brand Cooper
Size LT305/60R18 126/123Q
Rim Size 18 inches
Section Width 30.5 centimeters
Tire Aspect Ratio 60
Load Index 126
Speed Rating Q
Load Capacity 3750 pounds

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Nov 9

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

Cooper sst tires are legit.
Size: LT275/70R18 125/122P
I always used to use Dick Cepek tires until I bought my first set of coopers 2 years back. Now I always use Coopers on all 3 of my trucks. The SST,s are not noisy and handle perfectly on my f250 super duty , I love them for all my driving needs. They look aggressively awesome 10/10
Reviewed in the United States on May 2, 2025 by Rob DeG
Great tires
Size: LT275/70R18 125/122P
Review Image by Bob Espersen
Review Image by Bob Espersen
These are really great tires, great traction, they wear great, they will make your vehicle stand out from the rest. They are a bit pricey. You get what you pay for though. They are a bit noisy on the highway, but the benefits out way a little noise. I recommend these tires 100%.
Reviewed in the United States on July 17, 2023 by Bob Espersen
Great tire so far
Size: LT275/70R18 125/122P
Great tire so far. Tread wear is good so far. I drove from Colorado to PA and back on these at high speeds and no issues. They make noise but they are not that loud. If tire noise bothers you, MT tires are probably not for you because these are the same (noise wise) as Cooper S/T Maxx's I have had on my truck prior to them. Love these tires, EXCEPT for they do kick up a lot more stones/debris and will chip your body paint around the tires. So get some mud flaps or 3M body protection film. I am going to get some 3M body protection film custom cut for the body style of my truck in these areas and continue running these tires. ... show more
Reviewed in the United States on February 2, 2016 by 22AB
Great tire!
Size: LT305/60R18 121/118Q
Review Image by Christian Tominello
Rides smooth, slight hum while moving nothing major. Balanced out amazing. Great grip in rain and offroad. No complaints from me!
Reviewed in the United States on July 30, 2024 by Christian Tominello
Worst tires ever
Size: LT275/70R18 125/122P
Worst tires ever less than a year old. Already have had to replace all 4 with new tires from else where. Had them rotated several times. Didn't help at all. Dont buy Worst ever.
Reviewed in the United States on January 15, 2026 by teresa
Awesome performing truck tire!
Size: LT285/65R18 125/122Q
Review Image by Alicia A.
Great tires in rain, mud and sand here in florida. Much quieter on pavement than i thought they would be. Very aggressive tread, i hope they wear slowly.. Update, 4.29.2018 Have been daily driving on these for 1.5 years! They wear slow, balance and rotate great still. Noise is very low at any speed. Still look amazing and my Tundra has never been stuck....ever WILL replace with exact same tire if they ever wear down enough to replace. Have well over 70% tread left ... show more
Reviewed in the United States on September 18, 2016 by Alicia A.
Good tires
Size: LT295/70R18 129/126P
These tires are more aggressive in person than the picture. They did have a slight more road noise than my previous tire (Nitto mud Grapplers), but nothing over bearing. I run these on a 2011 Chevy Silverado 2500 HD. I ran these in 4WD running thru my pasture and they grip very well in mud and/or dirt. A lot my my driving is on pavement and the tires are holding up well but I am only at approximately 7k miles on them and haven’t done a tire rotation yet. Overall good tire ... show more
Reviewed in the United States on March 6, 2019 by mark abrego
30,000 mile review
Size: LT305/60R18 121/118Q
I travel 60-70k miles a year. I've ran BFG's KO2's for many years, averaging around 80k before needing new ones. I've got 30k on these so far and I'm very pleased. They look aggressive and I like the stance of my truck better than I did with the BFG's. They balanced out easily & have a good ride with minimal road noise. They handle well & have good grip in the rain. If they continue to hold up for the next 50k as well as they have the first 30k, I'll have to consider making a permanent change.(After I try out the KO3's) As of right now I'm a fan! ... show more
Reviewed in the United States on November 12, 2024 by rGc
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