Cooper Cs5 Grand Touring, Mastercraft Lsr Grand Touring, model year 9999. Filed by Cooper Tire & Rubber Co. and reported to NHTSA on 21 February 2021. 11,957 vehicles potentially affected.
What the notice says Cooper Tire & Rubber Co. (Cooper Tire) is recalling certain Cooper CS5 Grand Touring 225/55R17 and Mastercraft LSR Grand Touring 225/55R17 tires with DOT codes 2920 through 3220, 4220 through 4420 and 5120 through 0121. The tires may have low tread gauge in the shoulder slot area which could cause tread separation and …
Is your vehicle included? Check with your VIN at NHTSA, or ask a dealer. This page is an independent copy of the notice, kept so you can see what changed after it was published. It is not the authority, and the authority’s own text is the one to act on.
Cooper Tire's own number for this recall: 177-2. That is the number on the owner letter and on the dealer paperwork. 21T003 is the number NHTSA gave the same campaign, and the number this page is filed under. They are one recall, written two ways.
What owners ask about this recall
- Which vehicles does recall 21T003 cover?
- Cooper CS5 Grand Touring, Mastercraft LSR Grand Touring.
- What is wrong with them?
- Cooper Tire & Rubber Co. (Cooper Tire) is recalling certain Cooper CS5 Grand Touring 225/55R17 and Mastercraft LSR Grand Touring 225/55R17 tires with DOT codes 2920 through 3220, 4220 through 4420 and 5120 through 0121.
- What can happen if it is not put right?
- A sidewall failure may cause the tire to rapidly deflate, increasing the risk of a crash.
- Is there a fix yet?
- Yes, and it is free. Cooper Tire will notify registered owners, and dealers will inspect and, if necessary, replace the tires, free of charge. Cooper Tire plans to begin notification no later than April 22, 2021. Owners may contact Cooper Tire customer service at 1-800-854-6288.
- What should I do now?
- Check your own vehicle by its VIN with NHTSA, which is the record to act on. Cooper Tire calls this recall 177-2, which is the number on the owner letter and the dealer paperwork.
Answered from the register this site holds. NHTSA is the record to act on.
What the authority says can happen if this is not fixed: “A sidewall failure may cause the tire to rapidly deflate, increasing the risk of a crash.”
affected
in the notice
caught
| Campaign | 21T003 |
|---|---|
| Filed by | Cooper Tire & Rubber Co. |
| System at fault | Tires |
| Reported to NHTSA | 21 February 2021 |
| Model years | 9999-9999 |
| Vehicles named | COOPER CS5 GRAND TOURING, MASTERCRAFT LSR GRAND TOURING |
What the notice says today
The consequence
A sidewall failure may cause the tire to rapidly deflate, increasing the risk of a crash.
The remedy
Cooper Tire will notify registered owners, and dealers will inspect and, if necessary, replace the tires, free of charge. Cooper Tire plans to begin notification no later than April 22, 2021. Owners may contact Cooper Tire customer service at 1-800-854-6288. Cooper Tire's number for this recall is 177-2. Note: This recall supersedes 20T-017 and any tires recalled under 20T-017, but not yet replaced, are now included in this safety recall.
What it said before
This campaign is in the register but not yet in the dated wording archive, so we cannot yet say whether its text has moved. It enters the archive on the next pass.
This is one of 455 notices in the record whose component field names tires. Across that group the median wait before owners were written to was 34 days.
Last checked . No change has been recorded in the wording.
How to cite this record
Quoting the wording on this page means quoting a version, so the date belongs in the citation:
CarsMultiverse, recall 21T003, wording as read on 16 September 2026. https://carsmultiverse.com/recall/21t003/
The cross-border matches used on this site are deposited as a citable dataset: doi:10.5281/zenodo.22087136. The recall wording itself is published by the national authority named above and is theirs, not ours.
The recall record and its wording are published by the US National Highway Traffic Safety Administration and are US Government public domain. The dated archive, the comparison and any before-and-after above are CarsMultiverse. How fresh every engine behind this page is, is public on the status page. To check a specific vehicle, use NHTSA’s own VIN lookup.
Other Roadmaster notices we hold
- 21T015: Hercules Roadtour 455 Sport 225/50R17 tires with DOT code 0721
- 21T014: Evolution H/T 245/70R16 tires
- 21T002: Discoverer, Evolution, Courser, Deegan, Adventurer, Hercules, Back Country, Multi-Mile Wild Country and Big O brand tires
- 19T006: Roadmaster RM852 EM tires, size 295/75R22
- 10T003: DISCOVERER H/T AND DISCOVERER LSX TIRES, SIZE 245/70R17, PRODUCED BETWEEN NOVEMBER 15 AND DECEMBER 12, 2009
All 6 Roadmaster campaigns we hold · Every manufacturer in the record
The fingerprint of this notice
We take a SHA-256 of each of the three blocks of text the authority publishes and keep the first eight characters. As we last read campaign 21T003 on 23 August 2026, they were:
- Defect summary
b19aa6a0 - Consequence
db032fbd - Remedy
214b6982
We first read this notice on 21 August 2026. It has not moved since. If it ever does, these characters will not match, and the change will be dated here.
The wording we hold for 21T003 · how the whole register is watched
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