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Westlake SU318 H/T Test Results

Tire Reviews tests: 2 Tested 2021 to 2026 1 publication

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

  • 2Independent tests
  • 0Test wins
  • 0Podium finishes
  • 8thAverage finish
  • 8%Field beaten on average
  • 1Publications
Westlake SU318 H/T

2 tests, 2021 to 2026

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

Record by discipline

Where the Westlake SU318 H/T finished in each measured discipline, across every test that measured it against at least two other tires. Field beaten is the share of the other tires it outranked in that measurement.

Discipline Tests Avg finish Field beaten Firsts
Dry
Dry Braking 2 P7 of 8 17% -
Dry Handling 2 P5 of 8 50% 1
Subj. Dry Handling 1 P9 of 9 0% -
Wet
Wet Braking 2 P8 of 8 0% -
Wet Handling 2 P7.5 of 8 8% -
Subj. Wet Handling 2 P8 of 8 0% -
Wet Circle 1 P7 of 7 0% -
Straight Aqua 2 P7.5 of 8 6% -
Curved Aquaplaning 2 P6.5 of 8 23% -
Snow
Snow Braking 1 P6 of 7 17% -
Snow Traction 1 P7 of 7 0% -
Snow Handling 1 P6 of 7 17% -
Subj. Snow Handling 1 P7 of 7 0% -
Snow Cornering 1 P6 of 7 17% -
Off road
Dirt Handling 1 P7 of 7 0% -
Subj. Dirt Handling 1 P7 of 7 0% -
Grass Traction 1 P9 of 9 0% -
Comfort
Subj. Comfort 2 P8 of 8 0% -
Noise 2 P2.5 of 8 81% 1
Value
Value 1 P1 of 7 100% 1
Rolling Resistance 2 P7.5 of 8 6% -

Performance Analysis

Drawn from 2 tests. Updated October 29, 2026.

The Westlake SU318 HT repeatedly combines relatively low external noise with weak wet braking, high rolling resistance and poor comfort. In the 2026 Tire Reviews highway-terrain all-season test it finished sixth of seven overall, but last in wet braking, snow traction, dirt handling, subjective comfort and rolling resistance. Wet stopping took 59.74 meters, 9.1% longer than the best, and snow acceleration was 45.1% behind the leader. External noise led the field at 72.4 dB. Rolling resistance was 34.4% above the best, while testers found it the hardest tire to drive cleanly in the wet.

Its dry-handling win in 2026 was unusual: in the 2021 Tire Reviews SUV comparison it was last of nine in dry braking and handling, as well as wet braking and handling. That earlier field was a summer-tire comparison, while the tester noted its North American all-season positioning; the 2026 highway-terrain field is a different context. Aquaplaning was weak in both tests. Low price and the best warranty-based cost-per-mile score helped its 2026 overall result, but that calculation is not measured tread life. In 2021, external noise was fourth of nine and praised, whereas comfort was last, so quiet pass-by noise should not be confused with a smooth ride.

Performance Strengths

  • Road noise Strong in 2 of 2 tests
    Details
    • Lowest external noise, 72.4 dB, 2026 Tire Reviews HT all-season test
    • Fourth of nine, 70.8 dB, and praised for relatively quiet pass-by noise, 2021 Tire Reviews SUV test
  • Dry handling Minor in 1 of 2 tests
    Details
    • First of seven at 58.6 seconds, 2026 Tire Reviews HT all-season test
    • Unusually stronger than last of nine in the 2021 Tire Reviews SUV comparison
  • Value for money Minor
    Details
    • Cheapest tire and first of seven for warranty-based cost per 1,000 miles, 2026 Tire Reviews HT all-season test; not measured wear

Performance Weaknesses

  • Wet braking Strong in 2 of 2 tests
    Details
    • Last of seven, 9.1% longer than best, 2026 Tire Reviews HT all-season test
    • Last of nine, 34% longer than best, 2021 Tire Reviews SUV test
  • Rolling resistance Strong in 2 of 2 tests
    Details
    • Last of seven, 34.4% above best, 2026 Tire Reviews HT all-season test
    • Eighth of nine, 31.3% above best, 2021 Tire Reviews SUV test
  • Ride comfort Strong in 2 of 2 tests
    Details
    • Last of seven in subjective comfort, 2026 Tire Reviews HT all-season test
    • Last of nine in subjective comfort, 2021 Tire Reviews SUV test
  • Aquaplaning resistance Strong in 1 of 2 tests
    Details
    • Last of seven straight and fifth of seven curved, 2026 Tire Reviews HT all-season test
    • Eighth of nine in both aquaplaning disciplines, 2021 Tire Reviews SUV test
  • Snow traction Minor in 1 of 2 tests
    Details
    • Last of seven, 45.1% behind best, 2026 Tire Reviews HT all-season test
  • Off-road traction Strong in 1 of 2 tests
    Details
  • Wet handling Strong in 1 of 2 tests
    Details
  • Wet grip Strong in 1 of 2 tests
    Details

Every test, newest first 2

Strong = top two of the field in that measurement. Weak = bottom two.

2026 1 test
P6 of 7 Beat 17% of the field

Best HT All Season Tires for 2026 Tested!

Tire Reviews 265/65 R18 Tested by Tire Reviews

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.

StrongDry HandlingNoiseValue WeakWet BrakingWet HandlingSubj. Wet HandlingWet CircleStraight AquaSnow BrakingSnow TractionSnow HandlingSubj. Snow HandlingSnow CorneringDirt HandlingSubj. Dirt HandlingSubj. ComfortRolling Resistance WinnerGeneral Grabber HT

2021 1 test
P9 of 9 Beat 0% of the field

2021 Tire Reviews SUV Tire Test

Tire Reviews 235/55 R18 Tested by Tire Reviews

Once again the cheapest tire on test, performed the worst, however it's worth noting, while this tire was sold as a summer tire when shopping for the test, it is marketed as an all season tire in north america, meaning it's likely to have a higher level of snow performance than the other eight tires which could explain some of the offset in the dry and wet.

WeakDry BrakingDry HandlingSubj. Dry HandlingWet BrakingWet HandlingSubj. Wet HandlingStraight AquaCurved AquaplaningGrass TractionSubj. ComfortRolling Resistance WinnerMichelin Primacy 4

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