Sumitomo ST938 Commercial
Sumitomo's ST938 is a heavy-duty commercial tire that's designed for use on the drive axle of trucks and features an innovative block arrangement for lower rolling resistance, a closed shoulder that minimizes uneven wear, wide grooves for all-season traction, and a thick rubber base for heat dissipation. Features & Benefits Designed for use on the drive axle of commercial trucks Stone ejectors built into grooves to protect casing from damage Closed shoulder design fights off uneven wear for a longer tread life Optimized design lowers rolling resistance to enhance fuel efficiency
NHTSA-reported issues for Sumitomo Sumitomo ST938 Commercial
Top issue category: Tires (General)
Most reported: Tires (General) (45) · Tread / Belt (16) · Sidewall (11) · Valve (8) · Bead (4)
Complaints are voluntarily submitted to the NHTSA Office of Defects Investigation and are not verified by NHTSA — they represent owner-reported problems, not proven defects. Counts can be useful as a relative quality signal across comparable tires or vehicles.
Specs
| Brand | Sumitomo |
|---|---|
| Model | Sumitomo ST938 Commercial |
| Season | winter |
| Type | truck-suv |
| UTQG treadwear | N/A |
| UTQG traction | N/A |
| UTQG temperature | N/A |
| Mileage warranty | N/A |
| Noise (dB) | N/A |
| Introduced | N/A |
Live prices
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Available sizes (0)
Size data being verified.
Sumitomo Sumitomo ST938 Commercial: what the numbers tell you
Manufacturer treadwear data for the Sumitomo ST938 Commercial is not publicly listed. This is common for OEM-only or track-day tires that don't carry a US treadwear warranty. No mileage warranty is published for this tire, which is typical for performance summer and track-day rubber where the manufacturer doesn't make wear-life claims.
Cabin noise data for this tire is not published by the manufacturer. As a winter tire built for the truck-suv segment, the Sumitomo ST938 Commercial is positioned against direct rivals within the same category. Comparing it to a tire in a different category (e.g. summer vs all-season) makes the spec sheet misleading because the design targets are not the same.
Sumitomo's ST938 is a heavy-duty commercial tire that's designed for use on the drive axle of trucks and features an innovative block arrangement for lower rolling resistance, a closed shoulder that minimizes uneven wear, wide grooves for all-season traction, and a thick rubber base for heat dissipation. Features & Benefits Designed for use on the drive axle of commercial trucks Stone ejectors built into grooves to protect casing from damage Closed shoulder design fights off uneven wear for a longer tread life Optimized design lowers rolling resistance to enhance fuel efficiency
For an apples-to-apples comparison against direct rivals, see the comparison pages linked from this tire's brand index.
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Last verified 2026-05-21.