2026 Thor Motor Coach Four Winds Problems
Owner-reported complaints filed with NHTSA, grouped by component
Data refreshed
What this page shows
Everything below is an owner-reported complaint submitted to NHTSA about the 2026 Thor Motor Coach Four Winds, grouped by the component NHTSA recorded on the report. These are not confirmed defects, and they are not recalls. NHTSA does not verify most reports before publishing them, and a category with more reports in it is not evidence that a part is defective.
Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.
Reports by component
Ranked by how many owner reports name each component category
- Other / unspecified266.7%
- Tires & wheels133.3%
Percentages are of component mentions. A single complaint can name more than one component, so these do not sum to the total complaint count.
Each component in detail
What the reports in each category say, in the owners' own words
Other / unspecified
Reports whose component NHTSA recorded as unknown, or that do not map to one of the categories above.
From owner reports, verbatim
2026 Ford E-350 Chassis / Thor Four Winds 25Z motor coach; which only had about 800 miles on it! While driving north on I-81, the low tire pressure warning came on. So, I switched to the tire pressure screen and the outside left tire was dramatically loosing pressure from recommended 65 psi - dropping to around 30 psi within a few mile. We pulled of onto the shoulder, with only 3-4’ clearance of traffic. My wife and I found that the angled extension valve stem came unscrewed from straight connection on the rim and was loosing lots of air. I was able to hand tighten the angled extension, then with needle-nose pliers snug up the valve stem extension. I then was able to use a portable compressor to re-inflate the tire to spec and continue out trip. However, had we not recognized the dramatic tire pressure drop, I’m sure we would have had a blowout!
The vehicle I rented — a Thor RV based on a Ford E350 — was handed over with a missing lug nut on one wheel and a dangerously loose lug nut on the opposite rear wheel. The component that failed is part of the wheel fastener system (lugs/nuts/bolts). It is not available for inspection now, as the vehicle has since been returned to the rental company. This situation posed a serious safety risk — had the remaining nuts failed while driving, the wheel could have detached entirely, potentially leading to a crash or injury. I noticed the issue during a basic inspection many miles after the pickup. I was forced to buy and install a replacement lug nut myself to make the vehicle roadworthy and safe to drive. I have the propf that the vehicule was handed over to me with a missing lug nut as the video I took during tje check in shows the missing lug nut. The issue was confirmed independently by me, and I informed the rental company immediately. They acknowledged the problem and promised to refund the cost of the part. However, it has now been over two months, and they have neither issued the refund nor provided any follow-up. The vehicle was not inspected by police, manufacturer, or insurance, as I managed to resolve the issue myself to avoid driving in unsafe conditions. There were no warning lights or messages — only a physical inspection revealed the problem. I am filing this report because I believe the company rented out a mechanically unsafe vehicle, and others could be at risk if this is not addressed.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Tires & wheels
Reports naming tires, wheels, hubs, or the tire-pressure monitoring system.
From owner reports, verbatim
2026 Ford E-350 Chassis / Thor Four Winds 25Z motor coach; which only had about 800 miles on it! While driving north on I-81, the low tire pressure warning came on. So, I switched to the tire pressure screen and the outside left tire was dramatically loosing pressure from recommended 65 psi - dropping to around 30 psi within a few mile. We pulled of onto the shoulder, with only 3-4’ clearance of traffic. My wife and I found that the angled extension valve stem came unscrewed from straight connection on the rim and was loosing lots of air. I was able to hand tighten the angled extension, then with needle-nose pliers snug up the valve stem extension. I then was able to use a portable compressor to re-inflate the tire to spec and continue out trip. However, had we not recognized the dramatic tire pressure drop, I’m sure we would have had a blowout!
Too few reports in this category for a page of its own — they appear in the full complaint list.
Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.
Elsewhere on this vehicle
Data sources
- NHTSA Office of Defects Investigation — owner-reported complaints and the components recorded on them
Data on this page last refreshed .