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2018–2021 Thor Motor Coach Aria, 2018–2021 Thor Motor Coach Palazzo, 2020 Thor Motor Coach Redundant Palazzo and 2 other models Recall: Tire valve stem extension for the inner wheel may contact the outer wheel…

NHTSA campaign 20V559000 · Tires · filed Sep 15, 2020 · verified Jul 30, 2026

Units reported
2K
Manufacturer
Thor Motor Coach
Risk
Crash / injury
Owner letters
Mailing began Nov 2, 2020

The defect

Thor Motor Coach (TMC) is recalling certain 2018-2021 Aria, Palazzo, Tuscany, and Venetian motorhomes built on a Daimler Trucks (DTNA) chassis. The tire valve stem extension for the inner wheel may contact the outer wheel rim opening and become damaged.

The risk

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.

Check whether your specific vehicle is affected

Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.

Check VIN on NHTSA →

The fix — what 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.

Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.

Affected vehicles

Related recalls

All Thor Motor Coach Aria recalls → · All Thor Motor Coach recalls →

Source: NHTSA recall database, campaign 20V559000 (manufacturer number RC000204). Data last verified Jul 30, 2026.