Happy Thanksgiving!!! Resolution is Wyze not addressing this. Sad but True and what I’ve have been saying…Small Claims Court.
The resolution is Wyze ignoring it hoping it goes away 
Any chance this is an electrical arcing issue?
A small (millivolt) leak through the chassis to the tires then to ground (floor) might cause this. Some rubber compounds can conduct electricity and the variety of dark to light markings suggest time or dwell at the charge location may be a cause. Low voltages can be used to etch all sorts of surfaces but it just takes longer.
If the battery is removeable (I don’t own a vac, just cameras) can the issue be replicated? If the vac is docked but the charger unplugged does it still stain? With a sensitive meter any arcing might be measurable — like sticking your tongue on a 9v battery.
Electrical discharge machining (EDM) can cut through steel but the point of contact is barely visible.
That’s my ¢2, and I hope it gets figured out and, I especially hope the issue is not a potential combustion source.
That’s an interesting theory, but I don’t think this is the case. Mine is one of the ones that leaves a residue on the floor that I can just rub off with my fingers or faster with a magic eraser. So it really seems to be something from the wheels being left behind, which reacts more with certain floor finishes or carpets.
Whatever it is…Wyze has left those affected in the dark and will never address their issue.
You provided more Troubleshooting then Wyze has publicly acknowledged. More likely the Cheap Tires reacting to the surfaces.
Can the wheels be wiped such that they can be worn down with minimal effort or does it require parking or prolonged exposure between the wheels and another material?
I’m just thinking that like welding, the electrode is sacrificial and eventually it is absorbed into or on to the part being welded. Material transfer, the stain in this case, is moving from the wheel to the floor so it is either an abrasive action, or a leaching or dissolving action of some sort. Galvanic corrosion happens between lots of dissimilar materials and the wheel may also be providing the electrolyte.
It might also be that a specific batch of the compound on the wheels may be at fault; hence the MAC request which might help Wyze pinpoint the problem to a specific production cycle.
I may have to buy one just to investigate myself as it’s an intriguing and I’m sure frustrating problem.
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I have posted before and my carpet is one of the worst looking from the wheels. They replaced first and I got most of stains out then replacement did the same thing. Only on main floor. I use mine on 2 floors. House is basement, main and upstairs. I move it between both main and up. Gas water heaters x2 and gas furnace x2. I bring that up because of the ozone generated by gas appliances. When I did a lot of scuba diving, if we left our mask, snorkels, anything that was “silicone”-like near any of the above it would start to degrade. First sign was clear material turning brown then loss of elasticity followed by degradation. At the time water heater was in garage and elevated, gear on shelf showed effects in month.
Weirdest thing is for the carpet stains it is only where it parks and the stains only appear on the outside of the wheels, not under, not inside. Had to remove and repair carpeted area.
If you go back and search my post you can see the pictures and also the locations of the stains. When the carpet square was cut out to be repaired there was no evidence on the underside of the carpet of the staining only remnants of the thousand different chemicals and processes I tried using to get the damn things out. At this point I just used my CNC to cut a nice little parking ramp out of 1/8 in acrylic.
I definitely want to participate in the class action. I went through support and they offered me a $30 Wyze gift card for the thousands in property damage this robot did to my floor. This robot design is clearly defective and the company is doing NOTHING about it.
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Hey, wait! If there’s a class forming for an action against Wyze, I WANT IN! Sign me up! Brand new hardwood floor permanently stained. I tried what they suggested to remediate and it’s a joke. Left my floor worse off than before. I’ve now thrown out every Wyze device in my house (replaced them with Blink et al) and am very strictly Anti-Wyze now.
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I too have suffered damage to my newly restored wood floors with a water base Polyurethane. I didn’t initially see the damage that’s done until the unit move away from the spot where it sits/in its cradle. I initially had it in my bedroom and I thought maybe the floor guy drop some thing. Then six months later, I moved it to a location in the hallway, and there, too it made its burn marks. So now on my brand new floor, I have these awful looking marks, has wyze gotten back to anyone with a solution? I just submitted a support ticket after reading many comments and included photos. If there’s any kind of recourse or class action suit, please reply as I feel we should be compensated for the damage if there isn’t a proper fix that won’t ruin my floors or bleach them . It only allows one photo
Sadly, their solution is to send you another vacuum (but will most likely happen again) or credit to their store for $50-75. In my case, the support team member said they have never heard of this issue before and blamed me for something I did. Wyze has been made aware of this for years, yet refuse to issue a recall or a warning (Apple made a warning when one of their speakers was doing something similar). In the mean time, my sister who had bought one, and myself, now have a plastic mat under the vacuum. I have read of people who have used WD 40, or rubbing alcohol. Sadly nothing has worked for me, and the only solution is to sand the area and revarnish for a cost of $200 -$400 (estimate) - I had my floors done last year :(. I was a huge proponent and early investor in Wyze, but their lack of handling of this situation (why are they still selling it knowing it will damage peoples floors?) has left a “stain” on their reputation.
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Oh, and guess what. I have tried a MILLION times to leave a product review to warn potential buyers and they BLOCK my review stating it is violating their review policy. They only accept reviews that are 4-5 stars. THIS IS NOT OK.
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I had the same experience as you but they only offered me a $30 gift certificate. I didn’t take it. Hush money. 
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Same here and Wyze will REMOVE the review and Block you from posting from YouTube.
I have the same problem, and looking through all the posts, I can’t believe Wyze has not addressed this issue. Tried soap and water, Goof Off, and rubbing alcohol, but no luck. I guess I will try something more abrasive. Shame on Wyze, you need to address this on new products and help all of us with issues. I would not recommend this product because if this issue.
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If you look back at the comments, you’ll see I successfully removed the marks with hand sanitizer. This particular hand sanitizer was produced by a liquor distiller during the pandemic, so I imagine it was a drinkable alcohol mixed with a bit of aloe or other moisturizer. I suspect you could pick up a bottle of cheap vodka and, with a little bit of elbow grease remove the marks. I’ve moved and no longer have hardwood floors and I’m not getting the marks on textured tile. I agree that it is terrible that Wyze hasn’t put much effort into solving the problem, but I bet other robot vacuums have the same problem. I mean, didn’t we discover a couple brands in Amazon were identical for replacement parts?
Thank you, but do you have the brand name of the hand sanitizer? I’ve tried a generic brand and Purell. I’ve also tried vodka and a healthy dose of elbow grease. In addition to my other efforts I previously mentioned, I’ve also tried paint thinner, lacquer thinner and mineral spirits, Nothing seems to work for me. Maybe it’s the type of wood (walnut), but I don’t know. Thank you again for your response.
You’re not going to be able to remove these stains with anything but sandpaper. These wheels stain the wood. Almost like a reaction with the tannins in the wood. It appears that you have a hardwax finish on your floors. If this is the case then you should be able to sand and reapply to just the affected areas. If you have a poly finish, you’re more screwed as it cannot be spot finished effectively.
It’s disturbing that this has been going on for years and Wyze has not addressed/fix this or at the very least, put a warning in the package to advise customers with wood floors to watch for and protect their flooring. I have two of these things running in my home and they left damage that could have been avoided if I had been made aware. Newly finished floors badly damaged. Wyze should be warning customers about this possible reaction on wood floors.
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There was no brand name, just a local distillery in Denver. I think grain alcohol or maybe vodka would be closer to than commercial sanitizer. Another possibility might be isopropyl alcohol.