Anyone Else Experiencing Regular 21" Arachnid Tires "Thumping" Loudly When Turning While Backing Up?

[docbard]

I took delivery of my 2021+ Model S in December 2021. It is equipped with regular 21" Arachnid tires. From the beginning, whenever I back out of my driveway and start to turn (either left or right) at the bottom of the drive, I ALWAYS experience a "thumping" or "banging" as my front tires are turned. The Tesla shop folks insist everything is normal, while I remain concerned the tires are being damaged. Has anyone else -- driving a 2021+or 2022 Model S equipped with 21" Arachnid tires -- experienced this same issue?

 

[spartan0516]

Yes, mine does it too. Like you, I was a little surprised at first, but this thread explains it nicely. It’s basically just a little wheel hop when turning at or near full lock.

Plaid jumps and undeersteers when sharp turning at 3MPH

Hi all, Upon receiving my Model S Plaid, I noticed during sharp turns, the front wheels will hop (jump) and car will move forward, as if the car is understeering. This happens consistently at 3 mph and above. To reproduce this: 1. Rotate steering to max angle, say counter clockwise to the left...

teslamotorsclub.com

 

[Gavram]

I haven't changed out my 19's for the Arachnids yet, but my 911 does this as well. It's called the Ackerman effect and the wide wheels + Arachnid summer tires seem to be the culprit. The good news is that it only does it when it's cool/cold out but it goes away once the temps rise. It happens for about a month in the spring after I take my car out of storage from the Ohio winter but then completely goes away until late fall when the temps drop again.

 

[cassiri]

Yes my Plaid does it also. Previously P85D didn't. I suspect the wider tires and maybe tire compound that is more sensitive to cold temps is the cause. Ackerman effect sounds better than "chunking" which is what I always heard it called.