Segway Navimow Traction Wheel, Cleated Wheel, Rough Terrain Kit, Robust Wheels for Muddy Terrain and Slopes for Navimow i Series, i105N, i110N

TL; DR: Good all terrain tires, heavier, more grip for lawns that are lumpy or sloped. Should have been the standard wheels. Unless your lawn is perfectly level, and all connected, I would highly recommend these all terrain tires. They are heavier and have spikes, so the robot has more grip and can climb higher elevations. Excellent if your lawn is not perfectly level like mine. The one pain is putting on the hubcaps after you install them. They only install properly one way, after you align a small post that's on the inner side of the wheel. So you're gonna spend a good 5-10 mins trying as you blindly guess if the post is exactly where it needs to be while snapping the hubcap on.

This upgrade will help the Navimow to go up and down slope with no slipping even if the grass is wet

Update 8/21/24- While they seemed to solve the problem, I eventually found myself having to get the mower unstuck repeatedly again. Save the money on these wheels and simply remove the bumper from the front of the mower. It is held on by four easily accessible, 3mm Allen-head screws, and once removed the mower has enough ground clearance to not dig its nose in at the slightest divot. This may make it easier for the mower to run over something like a hose (or foot), but considering the mower got stuck 3 out of 4 times before, I figure it's worth the slight risk. Original review: Four stars only because these should have been an option from the start. It's a bummer to have to pay an extra hundred bucks to replace the stock wheels, but ultimately it's worth it. Previously, the mower would get stuck about once a mow day. I've had these wheels on for over two weeks now and it hasn't been stuck once. Installation is simple. If you have a normal yard (not a putting green), these are basically a must.

As described, work well in all areas of my yard.

Should have done this a long time ago. Zoysia in central Maryland. Yard is “relatively” flat with some edge areas that are sloped. This made the rows cut much more straight and these little spots that it would get stuck or struggle on an incline, fixed. I was able to move the edge back further where I had excluded it before. Battery life is better because it’s not struggling to get where it wants to go. The 10% of the problems after a year and half of use just went to 1%. I also upgraded to the aftermarket 6 blade which made a nice improvement in the quality of the cut. Couldn’t be more happy.

You spend all this money on wheels with more grip and what you get is wheels that are about 2-3 times heavier (more load on the already weak mower) and don't grip so much better as to justify the expense. What they will do, however, is spin out on problem spots and dig a nice deep rut and destroy your sod in that spot at the same time. They do grip a bit better, but the spikes need to be twice as long to really work for sloped yards or other issues that require more than the standard tire that comes with.

Big improvement on slopes and taller grass. If you don’t have these, then you might not notice a big difference. For me, it kept getting stuck on minor slopes and a little taller grass.

I was quite surprised at how much of a difference these wheels made on the performance of my mower. While the original wheels would complete around 52% of the yard before returning to the charger, including the need to go out and get it out of a bind at least twice, these wheels finished 63% with only getting stuck once… I’m making improvements to the level of the yard, but this San Augustine grass makes it a big more difficult. I don’t like the fact that I had to buy these without having the option to buy them with the original mower instead of the ones that came with it.