Westlake SU318 HT vs Cooper Endeavor Plus
Ahead in each discipline
The Westlake SU318 HT and the Cooper Endeavor Plus have met in one independent test so far, and the Endeavor Plus finished ahead. The Endeavor Plus was stronger in wet, snow, off road and value.
Performance profile
18 measurements from the one shared test, each tire shown as its share of the better figure.
Where each is furthest ahead
SU318 HT
Endeavor Plus
Point at or tap any spoke for both tires' figures.
In each test the better of the two figures counts as 100% and the other as its share of it, so a 118 ft stop against 112 ft is 95%; each spoke averages the shared tests that recorded it.
Where each scores higher
SU318 HT
Endeavor Plus
Point at or tap any spoke for both tires' figures.
Category scores are percentiles among tires of the same season and class: 90 means this tire out-performs 90% of them, measured across every test we hold, not only the ones it appeared in.
Every measurement, side by side
Both tires' figures from the one test that ran them together, on the same car, in the same size, on the same day. The bar grows towards the tire that did better.
| Measurement | SU318 HT | Gap | Endeavor Plus |
|---|---|---|---|
| Dry Level | |||
| Dry Braking ft | 136 | 1.2% | 135 |
| Dry Handling s | 58.6 | 1% | 59.2 |
| Wet Endeavor Plus ahead | |||
| Wet Braking ft | 196 | 7.8% | 181 |
| Wet Handling s | 84.7 | 2.5% | 82.55 |
| Subj. Wet Handling pts | 6.6 | 21.2% | 8 |
| Wet Circle s | 14.97 | 3.8% | 14.4 |
| Straight Aqua mph | 54.9 | 0.8% | 55.3 |
| Curved Aquaplaning ft/s² | 10.6 | 6.8% | 11.3 |
| Snow Endeavor Plus ahead | |||
| Snow Braking ft | 64 | 3.9% | 61 |
| Snow Traction s | 4.44 | 14% | 3.82 |
| Snow Handling s | 91.19 | 2.7% | 88.75 |
| Subj. Snow Handling pts | 7.4 | 9.5% | 8.1 |
| Snow Cornering g | 0.31 | 7.7% | 0.34 |
| Off road Endeavor Plus ahead | |||
| Dirt Handling s | 62.02 | 2.9% | 60.2 |
| Subj. Dirt Handling pts | 7 | 17.1% | 8.2 |
| Comfort Level | |||
| Subj. Comfort pts | 6.1 | 8.2% | 6.6 |
| Noise dB | 72.4 | 0.6 dB | 73 |
| Value Endeavor Plus ahead | |||
| Rolling Resistance kg / t | 9.33 | 10.5% | 8.35 |
Braking distances and lap times are better when lower; speeds, wear and grip figures when higher. A test's figures are its own: sizes, cars, surfaces and temperatures differ from one to the next, which is why the averages here are only ever of tests the two tires shared.
Head to head in 1 test in 2026
Each row is one published test in which both tires ran on the same car, in the same size, on the same day. The line is the whole field, winner on the left.
| Test | SU318 HT | Field | Endeavor Plus |
|---|---|---|---|
| Best HT All Season Tires for 2026 Tested! | P6 of 7 | P3 of 7 |
SU318 HT vs Endeavor Plus: your questions
Is the Westlake SU318 HT or the Cooper Endeavor Plus the better tire?
The Westlake SU318 HT and the Cooper Endeavor Plus have met in one independent test so far, and the Endeavor Plus finished ahead. On the Tire Reviews Score, which weighs every test and review we hold, the SU318 HT scores 6.1 and the Endeavor Plus 8.2 out of 10.
Which is better in the wet, the SU318 HT or the Endeavor Plus?
The Endeavor Plus led 6 of the 6 wet measurements the shared tests recorded.
Which is better in the dry?
Across the shared tests the dry measurements are split 1-1 between the SU318 HT and the Endeavor Plus.
Which is better in snow?
The Endeavor Plus led 5 of the 5 snow measurements the shared tests recorded.
More comparisons with these tires
Run either of these?
Your review is the part of this page no test can supply: how the tire wore, how it aged, what it was like in the rain in year three. It takes about five minutes.
Where this data comes from
Finishing positions and measurements are transcribed from each published test. A test only counts here when both tires ran in it, so every figure was recorded on the same car, size and day as the one it is compared to.
About the TR Score
The Tire Reviews Score rates each tire out of 10 from every independent test result and vetted owner review we hold, so two tires can be compared even before a test has run them together.
Who does the testing
Every test published as a Tire Reviews test is run by Jonathan Benson, who has been testing tires independently since 2007.