Tests – · none yet Owners 73 · 9 reviews
Sumitomo HTR Enhance LX looks discontinued: no new owner reviews or road tests in five years and no current EU tyre label.
Head-to-head
Updated
Sumitomo HTR Enhance LX vs Cooper Discoverer SRX — Compared
Relative Score (0–100): the weighted average of the categories below, each 60% road tests and 40% owner reviews (comfort 40/60). Based on 0 + 0 road tests and 9 + 340 owner reviews. How we score
Discoverer SRX leads, 76–72 Narrow edge
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Tests – · none yet Owners 78 · 340 reviews
“I’ve had Cooper Discoverer SRX (all-season) with good experience.”
Category by category
Relative Score per category, 0–100. Open “Why this score” for the tests and owner ratings behind it.
-
74
Dry
Discoverer SRX +579Why this score
Source HTR Enhance LX Discoverer SRX Professional tests (TWG score) ≈ 72 (est.) ≈ 75 (est.) Reviews found online 77 84 HTR Enhance LX: 60% × 71.8 (est.) + 40% × 77 = 74
Discoverer SRX: 60% × 74.8 (est.) + 40% × 84.1 = 79
No road tests of dry for HTR Enhance LX. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.42).
No road tests of dry for Discoverer SRX. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.42).
-
76
Wet
Discoverer SRX +581Why this score
Source HTR Enhance LX Discoverer SRX Professional tests (TWG score) ≈ 75 (est.) ≈ 79 (est.) Reviews found online 78 85 HTR Enhance LX: 60% × 74.5 (est.) + 40% × 77.6 = 76
Discoverer SRX: 60% × 78.8 (est.) + 40% × 85.2 = 81
No road tests of wet for HTR Enhance LX. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.55).
No road tests of wet for Discoverer SRX. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.55).
-
63
Snow
Discoverer SRX +669Why this score
Source HTR Enhance LX Discoverer SRX Professional tests (TWG score) ≈ 66 (est.) ≈ 70 (est.) Reviews found online 59 68 HTR Enhance LX: 60% × 66.2 (est.) + 40% × 58.6 = 63
Discoverer SRX: 60% × 69.8 (est.) + 40% × 68.2 = 69
No road tests of snow for HTR Enhance LX. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.37).
No road tests of snow for Discoverer SRX. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.37).
-
69
Comfort
Discoverer SRX +574Why this score
Source HTR Enhance LX Discoverer SRX Professional tests (TWG score) ≈ 69 (est.) ≈ 71 (est.) Reviews found online 69 77 HTR Enhance LX: 40% × 69.1 (est.) + 60% × 69 = 69
Discoverer SRX: 40% × 70.6 (est.) + 60% × 77.1 = 74
No road tests of comfort for HTR Enhance LX or Discoverer SRX. The test half is the tested tires’ average (69): owners’ comfort ratings barely follow the road tests.
-
72
Noise
HTR Enhance LX +270Why this score
Source HTR Enhance LX Discoverer SRX Professional tests (TWG score) ≈ 67 (est.) ≈ 67 (est.) Reviews found online 81 74 HTR Enhance LX: 60% × 66.6 (est.) + 40% × 81.1 = 72
Discoverer SRX: 60% × 66.6 (est.) + 40% × 74.3 = 70
No road tests of noise for HTR Enhance LX or Discoverer SRX. The test half is the tested tires’ average (67): owners’ noise ratings barely follow the road tests.
-
69
Treadwear
Discoverer SRX +170Why this score
Source HTR Enhance LX Discoverer SRX Professional tests (TWG score) ≈ 68 (est.) ≈ 68 (est.) Reviews found online 71 73 HTR Enhance LX: 60% × 67.9 (est.) + 40% × 71.2 = 69
Discoverer SRX: 60% × 68.4 (est.) + 40% × 72.7 = 70
No road tests of treadwear for HTR Enhance LX. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.35).
No road tests of treadwear for Discoverer SRX. The test half is estimated from the owner ratings, as far as owners and testers agree (correlation 0.35).
-
–
Handling (owners)
No comparison77Why this score
Source HTR Enhance LX Discoverer SRX Reviews found online – 77
Scores at a glance
| Category | Sumitomo HTR Enhance LX | Cooper Discoverer SRX |
|---|---|---|
| Relative Score | 72 | 76 |
| Dry | 74 | 79 |
| Wet | 76 | 81 |
| Snow | 63 | 69 |
| Comfort | 69 | 74 |
| Noise | 72 | 70 |
| Treadwear | 69 | 70 |
| Handling (owners) | – | 77 |
Higher is better. The Relative Score follows your weights below; category scores do not change.
Weight the categories that matter to you
Wet grip starts at “Important”. Treadwear starts at “Neutral” here: road tests measured it for at most one of the two tires, so it rests on owner reviews. Move the sliders and the scores update instantly.
Important
NotLessNeutralImportantMost
Important
NotLessNeutralImportantMost
Neutral
NotLessNeutralImportantMost
Less important
NotLessNeutralImportantMost
Less important
NotLessNeutralImportantMost
Neutral
NotLessNeutralImportantMost
Less important
NotLessNeutralImportantMost
Only one of the two tires has a score here, so this weight changes nothing in the head-to-head.
Recomputed
Headline score
72
/ 100
HTR Enhance LX
76
/ 100
Discoverer SRX
Only categories both tires have data for count toward the headline score.
Pros, cons & observations
Themes extracted from owner reviews found online — not the opinion of TireWheelGuide.
Tire A HTR Enhance LX
Pros
- High-quality tread and durable sidewall construction
- Excellent performance and comfort for touring
- Strong overall value and repurchase intent
Cons
- Initial balancing difficulties resulting in high-speed vibrations
- Perceived variations in build quality across different size options
Tire B Discoverer SRX
Pros
- Exceptional wet and winter weather traction (rain, slush, and snow)
- Smooth and comfortable highway ride quality
- Low road noise levels compared to stock or competing tires
Cons
- Some users reported higher-than-average road noise or humming
- Occasional tendency to wander or track on grooved pavement
- A few reports of shorter tread life than advertised by isolated users
What real owners are saying
From Reddit, forums and review threads. Not part of our score
Tire A
Sumitomo HTR Enhance LX
We haven't collected enough community discussion about this tire yet.
Tire B
Positive
Cooper Discoverer SRX
Community sentiment for the Cooper Discoverer SRX is overwhelmingly positive, with drivers consistently highlighting its quiet ride, comfortable handling, and dependable all-season traction. Many users report unexpectedly competent performance in light snow and winter conditions, along with favorable pricing compared to competitors like Michelin. Tread life feedback is generally solid, though at least one owner noted shorter longevity than expected.
bobistheoilguy.com
·1 upvote ·2020-09-17
“I have used the Cooper Discoverer SRX, the Cooper AT3 4S and Michelin Defender LTX. The Defenders lasted until 75000 miles and of course towards the end they were getting noisy and losing grip like all tires. Its a stiff tire built for longevity but not ride comfort. The Cooper Discoverer SRX is a very comfortable tire, but I got like 40000 miles out of them. They didnt seem to last. I am now using Cooper AT3 4S and its a very comfortable tire. It is a quiet tire but only a slight tolerable hum on the highway most wont notice. I cant believe its an all terrain tire. Thus I found long lasting does not translate to ride comfort. When you have a truck you need to hit the bumps more gently. The Coopers are comfortable tires which will make you turn your truck into a car but they are not 75000 mile tires. The Michelin Defenders will leave no doubt you driving a truck. For comfort also look at Continental/General line...”
expeditionforum.com
·1 upvote ·2025-03-21
“We'd gotten Coopers on Wife's vehicle and were impressed, so I tried Discoverer SRX 245/65/R17 on our Honda Ridgeline truck and they were (and remain) a revelation at least in that they made a huge difference in quieting the road noise. This was 7 years ago and now 30,000+ miles later they still look as new with little noticeable tread wear. Dunno the HTP or ATP II versions but imo Coopers are/can be first-rate tires.”
jeepgarage.org
·2016-02-09
“I just put the Cooper SRX on my 2013 Overland, nice and quiet so far. The snow has been easy too, I don't foresee having any problems with these tires, glad I got them.”
Top themes
#quiet and comfortable ride#winter and snow traction#treadwear and longevity#value and pricing#all-season performance#comparison to Michelin Defender
Based on 28 community posts
Specs side by side
| Attribute | A · Sumitomo HTR Enhance LX | B · Cooper Discoverer SRX |
|---|---|---|
| Category | All-Season tire | Premium Touring All Season tire |
| Vehicle type | Passenger Car / Crossover | SUV and 4x4 |
| Sizes available | — | 3 |
| Rim diameters | — | 16″ – 20″ |
| Tread depth | 11/32″ | 10 - 13/32″ |
| UTQG | 600 A A | 600 - 740 A A - B |
| Treadwear warranty | 70,000 mi | — |
| Sidewall | Blackwall | Black Side Wall - Raised Outline White Lettering |
| Max pressure | 51 psi | 44 - 50 psi |
Which one should you actually buy?
72
/ 100
Sumitomo HTR Enhance LX
76
/ 100
Cooper Discoverer SRX
Narrow edge: Cooper Discoverer SRX — better snow, dry and wet. Where the Sumitomo HTR Enhance LX is ahead, it is by less than 3 points. Sumitomo HTR Enhance LX rests on little evidence so far (0 tests, 9 reviews), so read this result as provisional.
Pick tire B
You drive through snowy winters
Cooper Discoverer SRX scores 69 vs 63 on snow.
Pick tire B
You want the most grip on dry roads
Cooper Discoverer SRX scores 79 vs 74 on dry.
Pick tire B
Your priority is wet-weather safety
Cooper Discoverer SRX scores 81 vs 76 on wet.
Pick tire B
You want the most comfortable ride
Cooper Discoverer SRX scores 74 vs 69 on comfort.
Tire A · Sumitomo HTR Enhance LX
Tire B · Cooper Discoverer SRX
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HTR Enhance LX or Discoverer SRX?
Which is better in the wet, HTR Enhance LX or Discoverer SRX?
Cooper Discoverer SRX, 81 vs 76 on our wet score.
Which grips better on dry roads, HTR Enhance LX or Discoverer SRX?
Cooper Discoverer SRX, 79 vs 74 on our dry score.
Which is better in snow, HTR Enhance LX or Discoverer SRX?
Cooper Discoverer SRX, 69 vs 63 on our snow score.
Which is quieter, HTR Enhance LX or Discoverer SRX?
Neither, by our numbers: 72 vs 70 on the noise score, within 3 points.
Which is more comfortable, HTR Enhance LX or Discoverer SRX?
Cooper Discoverer SRX, 74 vs 69 on our comfort score.
Which lasts longer, HTR Enhance LX or Discoverer SRX?
Neither, by our numbers: 69 vs 70 on the treadwear score, within 3 points.
How do we compare tires?
Every category score blends two independent signals. 60% comes from professional tire tests (braking distances, lap times, noise measurements), each result compared with every other tire in the same test and newer tests counting more. 40% comes from owner reviews found online, adjusted for how generously each site rates. Both use one scale: the average tested tire gets 70, the best 100. When a tire has only one of the two, the missing half is estimated from the other and the score stays closer to average; with no road test and fewer than five owner reviews it gets no score yet.
Handling is the exception: road tests measure it inside the dry and wet scores, so its own row comes from owner ratings only and starts as less important.
Community buzz from Reddit and forums is shown for context only — it never changes the score. Full methodology