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This vehicle has 6,600 miles on it.  All 4 wheels have been bent driving on normal roads at normal speed.  There have been 2 sidewall tire bubbles as a result.  And after having all wheels straightened one of the wheels has now cracked.  This caused the tire to deflate and the vehicle can no longer be driven.  Is speaking with a wheel shop this is a known problem with this vehicle.  Mercedes will not do anything about it.

MERCEDES-BENZ CLS 450 2023 WHEELS

Description of Defect: I am reporting a chronic and dangerous structural failure of the factory-equipped alloy wheels on my 2023 Mercedes-Benz CLS 450 4MATIC. Since purchase, this vehicle has suffered 8 documented incidents of wheel failure, consisting of 5 rim cracks and 3 complete wheel replacements. The failures are occurring under normal, paved driving conditions in the Dallas-Fort Worth area. This persistent cracking indicates a severe structural design defect where the wheelâs load rating is insufficient for the vehicleâs weight and low-profile tire configuration. Safety Risk: Each failure results in sudden and unpredictable loss of tire pressure. This creates a high risk of catastrophic tire deflation (blowouts) at highway speeds, which can lead to loss of vehicle control. Despite 7 prior repair/replacement attempts by both authorized Mercedes-Benz dealerships (Park Place Dallas) and independent specialists, the defect persists. The vehicle is currently at the dealership for its 8th failure. I believe this wheel configuration is fundamentally unfit for purpose and poses a recurring threat to the safety of the driver, passengers, and other motorists.

The car is equipped with Continental ProContact GX SSR 245/40R19 runflat tires in the front.  Since January of this year I have replaced the front tires 5 times.  Once for the left front and four times for the right front.  One time it was due to a bubble in the sidewall.  Other four were from the sidewall tearing vertically in 2 places a few inches from each other.  The pictures attached show how the tire failed four times.  In the cases where the sidewall failed in some cases was from running over what felt like a shallow pothole and/or broken pavement.  The broken pavement is one that I have gone over with another with non run flat tires multiple times without issue.

2023 Mercedes-Benz CLS450 4matic — vehicle data sourced from FuelEconomy.gov.

Experience the blend of performance and efficiency with the 2023 Mercedes-Benz CLS450 4MATIC, a certified hybrid sedan boasting a powerful 362 hp engine and all-wheel drive capability. With a combined MPG of 25 and a 4.4-second 0-60 mph acceleration, this vehicle offers a dynamic yet economical drive.

Mercedes-Benz CLS450 4matic (2023) Price