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Westlake SU318 H/T

Touring All Season Tested by Tire Reviews · 2

The Westlake SU318 HT is a budget highway-terrain all-season tire with low external noise and a low purchase price. Wet braking, comfort and rolling resistance are recurring weaknesses, and snow traction was poor in its highway-terrain comparison.

The quick answer

Owners say No owner reviews yet. Review this tire
Tests say 8th average finish across 2 independent tests Latest: P6 of 7 · 2026 See every test
Strengths & weaknesses Comfort, Dry Value, Snow Relative to its rivals across every test we hold

Built from every independent test result and vetted owner review we hold for this tire - the evidence is all further down the page. Data updated April 2026.

  • 2professional tests
Westlake SU318 H/T 3 photos

Tire Reviews Score

Westlake SU318 H/T

6.1/10

Better than 20% of all-season tires

  • Medium Confidence
  • 2 tests
Scores of the 193 all-season tires we have tested

How this score is built

Better than Weight
Independent tests2 tests · 1 publication · 2021-2026 20% 100%
Owner reviewsNo owner reviews yet – 0%
Combined 20% 6.1

A fixed curve turns the combined figure into the 0 to 10 score, so roughly the top 10% of a group score 9 or more.

Category by category

How it compares with other all-season tires in each area, and how much each area counts. 50 is the middle of the group.

Category Better than Weight Tests
WetBraking, handling and aquaplaning in the wet 35% 30% 2
DryBraking and handling on dry roads 63% 24% 2
SnowBraking, traction and handling on snow 6% 22% 1
IceBraking, traction and handling on ice Not tested, counted as average 13% –
ValueWear, efficiency and cost 13% 7% 2
ComfortNoise and ride comfort 64% 5% 2

Faded bars rest on one or two tests.

By discipline

The same results grouped by what the tire was doing. They are not counted a second time.

HandlingEvery handling test, on any surface 56% 2
BrakingEvery braking test, on any surface 9% 2

Confidence

  1. Limited
  2. Medium
  3. High

Its own test results decide 87% of the test figure. The other 13% is the average for its group, and it shrinks as more tests arrive.

High needs at least 3 tests, with its own results deciding 90% or more. Medium needs 2 tests and 70%. Anything less is Limited: expect the number to move as tests arrive.

The tests behind it

  1. 2026 Best HT All Season Tires for 2026 Tested! Tire Reviews · 265/65 R18 P6 / 7
  2. 2021 2021 Tire Reviews SUV Tire Test Tire Reviews · 235/55 R18 P9 / 9
All Tests
View Test Results

Tested 2 times by independent publications, the Westlake SU318 H/T averages a finish of 8th.

2 Tests
0 Test Wins
8th Average
6th Best
9th Worst
The latest test

Best HT All Season Tires for 2026 Tested! P6 of 7

The Westlake SU318 HT was included as I thought it would highlight how bad cheap tires are, which it did to a point, but it was WAY better than I expected it to be. That said, it was still last overall in the wet, last overall in snow, last overall in dirt, the worst subjective comfort, the highest rolling resistance. But it was the fastest around the dry handling lap! The value result really helped not finish in last place overall, And honestly while it isn't a great tire, assuming it doesn't wear out very quickly, it does present a somewhat interesting value proposition.

Strong: Dry Handling, Noise, Value Weak: Wet Braking, Wet Handling, Subj. Wet Handling, Wet Circle, Straight Aqua, Snow Braking, Snow Traction, Snow Handling, Subj. Snow Handling, Snow Cornering, Dirt Handling, Subj. Dirt Handling, Subj. Comfort, Rolling Resistance Winner: General Grabber HT

YearTestResultAward
2026Best HT All Season Tires for 2026 Tested!Tire Reviews · 265/65 R18P6 / 7Tested by Tire Reviews
20212021 Tire Reviews SUV Tire TestTire Reviews · 235/55 R18P9 / 9Tested by Tire Reviews

Videos

I Tested 7 Highway Tires in Wet, Dry, Snow & Dirt

I Tested 7 Highway Tires in Wet, Dry, Snow & Dirt

8 of the BEST SUV Tires For 2021 - Tested and Rated

8 of the BEST SUV Tires For 2021 - Tested and Rated

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Running Costs
View Test

In 265/65 R18, the Westlake SU318 HT is projected to cost $18.98 per 1,000 miles to buy and run - about $475 over 25,000 miles - based on its US price and the manufacturer's treadwear warranty, from the Best HT All Season Tires for 2026 Tested!.

Tire life here is the manufacturer's treadwear warranty, NOT measured wear - treat it as the maker's promise, not a test result.
Firestone Destination LE3$15.88
General Grabber HT$18.28
Cooper Endeavor Plus$18.45
Westlake SU318 HT$18.98
Tire purchase + fittingExtra fuel vs the most efficient tirecost per 1,000 miles
Tire life is the manufacturer's treadwear warranty, not measured wear. Assumes a typical car doing 29 mpg (rolling resistance causing 20% of fuel use), fuel at $3.60 per gallon and $80 fitting per set of four. US prices are from the time of the 2026 test; financing costs are excluded.
Frequently Asked Questions
How good is the Westlake SU318 HT in the wet?
Across the 2 wet-braking tests it has featured in, the Westlake SU318 HT stops 15% longer than premium rivals and 15.3% longer than mid-range rivals. It has a Tire Reviews wet score of 35/100.
How good is the Westlake SU318 HT in the dry?
Across the 2 dry-braking tests it has featured in, the Westlake SU318 HT stops 5.8% longer than premium rivals and 6.7% longer than mid-range rivals. It has a Tire Reviews dry score of 63/100.
How good is the Westlake SU318 HT in the snow?
Across the 1 snow-braking test it has featured in, the Westlake SU318 HT stops 7% longer than premium rivals and 3.2% longer than mid-range rivals. Across the 1 snow-traction test, it is 36.2% worse than premium rivals and 21.6% worse than mid-range rivals. It has a Tire Reviews snow score of 6/100.
How fuel efficient is the Westlake SU318 HT?
Across the 2 tests measuring rolling resistance, the Westlake SU318 HT's rolling resistance is 26.1% higher than premium rivals and 10.8% higher than mid-range rivals.
How much does the Westlake SU318 HT cost to run?
In 265/65 R18, the Westlake SU318 HT is projected to cost $18.98 per 1,000 miles to buy and run - about $475 over 25,000 miles - based on its US price and the manufacturer's treadwear warranty, from the Best HT All Season Tires for 2026 Tested!. The cheapest to run in that test is the Firestone Destination LE3, at $15.88.
Owner Questions
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Westlake SU318 HT Owner Reviews

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