Thor Motor Coach Aria 2020 Tires: Risk of Tire Pressure Loss from Valve Stem Damage
Thor Motor Coach is recalling certain 2018-2021 Aria motorhomes for potential tire valve stem damage that could cause loss of tire pressure and increase crash risk. Owners should contact TMC or DTNA for free inspections or replacements.
Use caution until it’s fixed
Extensive damage to the valve stem extension may result in a loss of tire pressure of the inner wheel, increasing the risk of a crash.
Contact the company
What happened, in plain English
Thor Motor Coach is recalling 2018-2021 Aria motorhomes with a possible tire valve stem issue that could lead to loss of tire pressure and higher crash risk. Affected owners should get their valve stems checked or replaced at no cost. Read more at govinfonow.com/recall/80097-thor-motor-coach-aria-2020-tires-risk-of-tire-pressure.
Source Summary by GovInfoNow · govinfonow.com/recall/80097-thor-motor-coach-aria-2020-tires-risk-of-tire-pressure · Updated October 4, 2026 · Official notice: NHTSA #20V559000
Cite this page
“Thor Motor Coach Aria 2020 Tires: Risk of Tire Pressure Loss from Valve Stem Damage.” GovInfoNow, updated October 4, 2026. https://govinfonow.com/recall/80097-thor-motor-coach-aria-2020-tires-risk-of-tire-pressure. Based on NHTSA recall #20V559000 (https://www.nhtsa.gov/recalls?nhtsaId=20V559000).
Why it’s dangerous
The tire valve stem extension may contact the outer wheel rim opening and become damaged. This damage can cause loss of tire pressure, increasing the risk of a crash.
Who’s affected
Owners of Thor Motor Coach 2018-2021 Aria motorhomes built on Daimler Trucks chassis are most at risk. The hazard affects the inner wheel valve stem extension.
How to tell if you have this one
Check if your Thor Motor Coach Aria motorhome was built between 2018 and 2021 and uses a Daimler Trucks chassis. The recall started November 2, 2020.
- Brand
Thor Motor Coach- Category
Vehicle
What to do — step by step
Contact TMC for Inspection
Call TMC customer service at 1-800-524-5210 extension 104 to schedule a free inspection of your inner wheel valve stem stabilizers.
Contact DTNA for Inspection
Call DTNA customer service at 1-800-547-0712 to schedule a free inspection of your inner wheel valve stem stabilizers.
What NHTSA says to do
TMC will notify owners, and DTNA dealers will inspect the inner wheel valve stem stabilizers, and adjust as needed and/or replace the inner valve stem, free of charge. The recall began November 2, 2020. Owners may contact TMC customer service at 1-800-524-5210 extension 104 or DTNA customer service at 1-800-547-0712. TMC's number for this recall is RC000204. DTNA's number for this recall is FL-861.
How this recall unfolded
Recall timeline
2 dated steps over 48 days.
- NHTSA received the defect report
- Recall began
Dates from the agency record only; steps without a date are left out.
Contact Thor Motor Coach
We’ve drafted a message you can send Thor Motor Coach to request your refund or repair — edit it as you like.
Subject: Recall 20V559000 — Thor Motor Coach Aria 2020 Tires: Risk of Tire Pressure Loss from Valve Stem Damage Hello, I own a Thor Motor Coach Aria 2020 Tires: Risk of Tire Pressure Loss from Valve Stem Damage that is covered by recall 20V559000 from Thor Motor Coach. The official recall notice states: TMC will notify owners, and DTNA dealers will inspect the inner wheel valve stem stabilizers, and adjust as needed and/or replace the inner valve stem, free of charge. The recall began November 2, 2020. Owners may contact TMC customer service at 1-800-524-5210 extension 104 or DTNA customer service at 1-800-547-0712. TMC's number for this recall is RC000204. DTNA's number for this recall is FL-861. I’m writing to arrange the remedy described in the recall (a refund, repair, or replacement as applicable). Could you please tell me the next steps to resolve this? Thank you.
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Where this comes from
The facts (hazard, remedy, dates, manufacturer) are pulled from the official NHTSA recall record. The plain-language summary and step-by-step checklist are written by GovInfoNow to make the official notice easier to act on — they don’t replace it.
- Official source: NHTSA Recall #20V559000 (September 15, 2020)
- Plain-language summary written by qwen3:4b on October 4, 2026, from the official record above. Not reviewed by a person — if it conflicts with the NHTSA notice, the notice is correct. Report an error on this page.
- GovInfoNow is an independent service and is not a government agency. We republish official NHTSA recall data; we don’t issue, amend or administer recalls.