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Updated May 2026

Kumho PorTran 4S CX11 review

The Kumho PorTran 4S CX11 receives a highly negative assessment based on this user report, primarily due to severe premature structural degradation. The tire failed to meet safety standards within a three-year period, indicating significant concerns regarding material longevity and durability.

Relative score
10/100
tests + owners
Owner reviews
10/100
1 review
Kumho PorTran 4S CX11
Scores

Two scoring systems, side by side

Owner scores come from reviews on retailer and review sites; road-test scores come from instrumented tests. Where they disagree, it is usually a discipline owners rarely push to the limit.

By owner reviews

10%
Would buy again 10%
Treadwear
Overall treadwear
10%
By source
DriverReviews80%15 reviews Tyre Reviews10%1 review
From owners

What owners like and dislike

Themes extracted from 1 owner review across retailers and review sites.

The Kumho PorTran 4S CX11 receives a highly negative assessment based on this user report, primarily due to severe premature structural degradation. The tire failed to meet safety standards within a three-year period, indicating significant concerns regarding material longevity and durability.

Cons

  • Premature structural failure
  • Development of longitudinal cracks in tread grooves
  • Poor long-term durability

Worth knowing

  • The reported failure occurred within a three-year service window, suggesting potential issues with rubber compound stability over time.