Some owners of the vehicles, which cost $80,000-$100,000, are reporting that they’ve had to change their tires much earlier than normal, with one saying they had to do so after just 6,251 miles.

“These tires are specially made for the Cyberbeast so for them to be this bad is unforgivable. I have an appointment on Oct 1st to discuss this with Tesla,” the owner said in a post on the Cybertruck Owners Club forum.

The owner showed pictures of the tires, which had lost at least half of their tread in just a three-month period.

The Cybertruck, which had four recalls within five months this year, is a heavy vehicle, weighing almost 7,000 lbs. But it also comes with several driving modes that can impact wear and tear on tires. “Chill” mode has a smoother propulsion that could reduce tread wear. “Beast” mode, meanwhile, will take the truck from 0 to 60 in just 2.6 seconds.

The driver in the post admitted to using Beast mode “a few times” but said the truck was only driven on streets and highways, taking them to a level where replacement is suggested in areas that experience wet or snowy conditions. (The owner said they lived in Colorado.)

Tesla did not immediately respond to Fortune‘s request for comment regarding the tire issue.

Tesla’s not alone with owner complaints about tires having to be replaced earlier than expected. Rivian owners also saw issues, according to TheDrive. As with the Cybertruck, that vehicle’s weight and driving modes were pointed out as factors.

For comparison’s sake, tires generally last about 50,000 miles before they need to be changed.