St226
Castle Rock St226; UTQG, warranty, prices, and OEM vehicle fitments.
NHTSA-reported issues for castle rock st226
Top issue category: Tires (General)
Most reported: Tires (General) (103) · Tread / Belt (79) · Sidewall (24) · Spare Tire (10) · Bead (4)
What owners described
Blowout or sudden deflation appears in 61% of these reports; about 3.0× as often as across all tire complaints. Percentages are shares of the 116 reports filed against Castle Rock tires across every line and vehicle that include a written account; a single report can describe more than one problem, so they do not total 100%.
| Reported problem | This subject | All tire complaints | Relative |
|---|---|---|---|
| Blowout or sudden deflation | 61% | 20% | 3.0× |
| Tread or belt separation | 16% | 13% | 1.2× |
| Pressure-monitoring (TPMS) fault | 11% | 2% | 4.7× |
| Sidewall failure | 9% | 15% | 0.6× |
| Bubble or bulge in the tire | 9% | 6% | 1.6× |
| Loss of control, rollover or collision | 4% | 8% | 0.5× |
Mileage at failure
26 of these reports state an odometer reading. The middle report is at 5,000 miles, with 8 in 10 falling between 1,800 and 10,000 miles.
In owners' own words
Verbatim excerpts from complaints filed with NHTSA about Castle Rock. Reports are published by NHTSA as filed and are lightly cleaned here only to remove intake codes.
This has been the second tire to blow out at 55 mph. When they blow its the middle of the tread that does its very unsafe for me and my family. very scary.. yes available for inspection i have pictures it has not been inspected by anyone but me i changed the tire on the side of the highway both times which put me in danger..no warnings just a loud bang..
Despite never being used, and always stored with a tire cover and proper inflation, this ~4 year old spare tire spontaneously developed a tread bulge. The bulge decreased in size, but still remained visible, after deflation and removal from the wheel. An air bubble exists between the inner liner and the casing.
I had tread separation issues with two of the four Castle Rock ST tires size 205/75/R14 on my 2020 travel trailer with less than 10,000 miles of use. One tire blew across the tire from side to side with complete separation of the tread. The second tire had a bulge lengthwise that completely wore the tread off an 8 inch section of the tire which was likely due to tread separation.
The contact owns a 2019 Forest River Flagstaff Micro Lite equipped with Lionshead Tires, Tire Line: Castle Rock, Tire Size: 205/75/R14, DOT number: UJTYMT418. The contact stated that while driving 40-55 MPH, the driver's side rear tire went flat. The tire pressure monitoring system was beeping. The vehicle was taken to an independent mechanic and the contact was informed that the tread was separating. The tire was replaced however while driving at an undisclosed speed the TPMS was beeping and the driver heard an abnormal sound. The contact pulled over and noticed that the passenger's side rear tire was flat. The contact stated that while the vehicle was parked, the passenger's side front tire went flat. The manufacturer was not contacted. The tire failure mileage was approximately 700.
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 | Castle Rock |
|---|---|
| Model | St226 |
| Season | N/A |
| Type | N/A |
| 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
Live prices for this tire are being verified. Use the shop links below to compare across our online retailer partners.
Available sizes (0)
Size data being verified.
Castle rock st226: what the numbers tell you
Manufacturer treadwear data for the St226 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 general tire built for the passenger segment, the St226 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.
The Castle Rock St226 has been part of Castle Rock's catalog since its introduction, and remains a current-production model.
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 2026-10-07.