I didn't buy it to ride. I'm building a custom trike wheelchair and got it to cannibalize the front end including the downtube. When I pulled it out of the box, it was so heavy I though it must be made of steel, not aluminum. Grabbed a magnet. It's aluminum. ..........In the past, Razor scoots were built as much as possible from off the shelf parts to minimize capital investment in manufacturing capability, and the design philosophy was "good enough". .......... This is a whole different animal. The main frame member is a complex custom extrusion, it was designed to be finished off by robotic welding, and to go together without any screws. The deck decal is not a decal, the sand material is put directly onto the aluminum deck and is almost impossible to remove even using using solvents. The paint is thick and I presume powdercoat. The aluminum is heavy guage, not lighter weight as I've seen on prior Razors I've cannibalized. The wheels are off the shelf standard split plastic hub 8 inchers but strong, with 10 mm axles and custom made spacers to fit a genuine bicycle style fork that has a slight amount of angle. They paid attention to every detail. ........ I gave it 5 for durability even though I cannibalized it. Why? You could beat an Abrams tank to death with this thing. I don't know how a human being riding it could ever break it other than by wearing out the tire or the cartridge type sealed bearings. And if that ever happens, just buy a replacement wheel assembly right here on Amazon. NOTE: to prevent flats, put some "slime" or equivalent into the tubes. If you have no experience with "slime", it seems like it wouldn't really work. But when i was a kid I had a paper route with lots of goathead stickers, so trust me on this, the stuff really does work.I am a 5'3" lady who has loved scooters since I was little. I have several different Razor scooters already which I love but I never had one with air tires before. My 4 year old son started wanting to ride with me every day so I decided to get the dirt scooter for myself. I was worried about the handlebar height since it's not adjustable but it works fine for me since I'm fairly short. The scooter got here a day early so I was happy about that. However, when I opened it and put it together, I tried riding across our wood floors to test it and it was super slow! I thought maybe it was just because of the different type of tire but when I took it outside with my son it was so hard to push myself around that I quit and went back to my old scooter. I pressed on the tires and they seemed full so I didn't think it was an air problem but we pumped them up anyway and sure enough that solved the problem! I went from having buyers remorse to having my new favorite scooter. I know the instructions tell you to make sure the tires are inflated when you get it but I don't really read instructions on scooters since they seem self explanatory. Also, the tires are hard and were not showing any signs of being flat until we checked the PSI with an air pump. So anyway, just thought this info would be helpful for you to know. I've now been riding in the street with my son for a week and I love how this scooter isn't bothered by the many pieces of gravel we have around due to construction. It's a smoother ride for rougher terrain so I like it a lot for our riding area. If I were at a park with a super smooth surface I would take my other scooters since they are faster on smooth surfaces but for riding on our rough pavement I really like this dirt scooter. It's lighter than I thought it would be and overall a nice ride and decent price.My kids (aged 5 and 7) love their Razor Pro RDS dirt scooters. They are more fun and easier to handle than the regular more lightweight "road" scooters with hard polyurethane tires that go jerking and jarring down the street. The dirt scooters are not as fast, but they glide along on rough broken pavement and up over sidewalks, making them a good replacement for regular lightweight scooters as the kids go a bit slower on them (which is a good thing) and they are less likely to crash (a very good thing). My single complaint (hence the ding of 1 star on 'sturdiness') is that although they are very sturdy, one of the wheels had a slight rattle for a while that was a bit annoying. We haven't had any issues so far with deflated tires that some owners on here have reported. Note that these red (or black) original RDS dirt scooters are slightly less tall and slightly lighter than the updated Razor Phase 2 versions (which come in teal or diamond edition) and are therefore more suitable for children.Overall, this scooter seems to be very well made. However, I didn't give it five stars for the following two reasons: First, the handlebar height is not adjustable. My son is an extra tall 11-year-old, and I can't see him being able to ride this for long. I realize that this scooter is made for rugged terrain, and the handlebars need to be high strength. The manufacturer really needs to figure out a way to either include an extension tube or make one available for purchase that will stand up to the rigors of off-road travel. Second, the valve stems on the tires are almost impossible to attach a tire pump to. I had to purchase some 90 degree extensions for the valve stems in order to add air to the tires, and it is a pain to have to attach these every time I air up the tires. There must be a better design out there, or at least make them come out straight so that I can attach my compressor hose easily.Ordered the scooter to cruise around the neighborhood with my daughter. The scooter handles the pavement well with the tires easily handling the small transitions and cracks; much better than her inline style wheels. In my opinion, riding/rolling through grass takes a fair amount of effort. The scooter seems it would be at home on hard pack dirt, but I have not had the opportunity to attempt. I have not owned it too long, but my first impression is it feels durable. The handle bars could be a little higher although I can’t complain as I knew the height before purchasing. My foot covers virtually the entire deck when flat and centered. However, when coasting or pushing this is not an issue, at least for me, as “my stance” is somewhat offset. I am ~6’1.We live in Ottawa, cold and snowy for 1/2 the year. Gravel on the roads as the snow melts. This scooter extends the scooter season significantly. The large wheels work on rough terrain. The only down side is it's weight. It is heavy and my son cannot do any tricks. If your child likes to do tricks with friends - this is not the scooter.Buena calidad, bastante robusto y resistente, se agradeceria que los ejes fuesen un poco mas robustos, pero es suficiente para alguien de hasta 75 kg de peso, la altura del manubrio resulta un poco baja para alguien de 1.70 de estatura... pero en general buen producto.Strong build, easy assemble (just the handle bars) and the tires are awesome for local scoots... no more worrying about rocks or cracks that can make for sudden stops. It is heavier than the smaller foldable Razor scooters, but for kids going to the park, not an issue.My son loves this scooter. Great for campsites and around on the roads and trails near my house. Never worryied about little rocks jamming the wheels. It is strong and well built, however it doesn't collapse down. Hasn't been an issue for us though. All my kid's friends want to ride it too. So much fun!Nice and sturdy scooter. Amazon had the best price on it. Easy to assemble. We may look into getting some new bearings for the wheels so that they roll a little better.