I am so very impressed with the product quality of the frame and rubber wheels. I purchased the Jumbo Deluxe Folding Cart and the Waterproof Deluxe Shopping Cart Liner with Handles (Sold by Miles Kimball Company). They are a perfect fit, and both appear to be well made. I did a lot of research before this purchase, and decided on this item because of the 200 lb weight limit, rubber tires (with large rear wheels, and swivel front), size of basket, height of cart and reviews.This will be used when I take my elderly father to the grocery store (will use to unload car and take groceries from car to elevator, then upstairs) and hauling very heavy laundry to and from the washer/dryer. It is so solid and easy to fold, set, and push with the handle height. It is so hard to find a basket that has a higher handle and is easy to maneuver. Have used a grocery basket over the courtyard bricks, broken sidewalks of New Orleans, and steps. It was extremely difficult to operate and heavy to lift over steps. This is MUCH better!That being said, the only negative is the instructions were not designed for the average consumer. I come from a family of engineers and can figure out most product installations, but this was more difficult mostly because of the names for parts that I was not familiar with and lack of clear instructions. Attaching pictures to help those who need help to save them the headache. As great as product as this is, if the wheels are not placed correctly, the integrity of the basket could be jeopardized and it would not be as stable.The tires work very well, but a few notes during assembly:1. Put the small wheels on.2. Slide the bar (mandrel) through the horizontal holes in the rear that connect the back wheels.3. Axle cotter pins look like small safety/bobby pins & go through the two vertical brackets to the hole in the rear bar. There are only two holes in bar on each end (4 total). Slide bar (mandrel) so the hole NOT on the extreme end is in the middle of the two open brackets & place pins through the holes. This prevents the wheels from sliding and stabilizes the rear. You will use the holes on the extreme ends to attach the round end caps later.4. On each side of bar end place in this order ... 1 washer, 1 spring, 1 washer, 1 wheel, 1 washer & 1 round cap.5. This is the trickiest part ... place the longer bobby pin (bending bolt) through hole in round cap & turn cap until it lines up with corresponding hole in bar. Once lined up properly, the "bending bolt" will go through easily. Now split the end of pin & wrap each end in opposite directions in the inner groove of the end bolt. Press the two ends in the groove firmly (can use the tip of flat screw driver). This is what keeps your wheels from falling off, and hold the spring in place.Pictures are attached to help in assembly. Good luck! Will update review after using for awhile. So far I really love this cart! Much better than expected since most are very shoddy materials. Have also purchased a stair stepper for a 5 story condo without an elevator and will report on it after received and try it out..12-5-17_UPDATE! After using my cart almost daily approximately every two days, have more to add. Still think this is a great cart, BUT there are a few issues.~ The larger back wheels are awesome. I tip the cart and pull upstairs using the back wheels like a dolly (not easy if have weight, but doable for one person). The front wheels ... not so much. It is good they swivel, but they are too small and make it extremely hard to go over thresholds or cracks in the road, especially with a loaded cart. It is almost impossible for one person to handle alone with weight in the cart (someone has to lift the cart in front, and the other person push from behind at the same time). It would help so much if the wheels were twice as large so they would take bumps more like the larger rear wheels. To the company's credit, the wheels are better quality than many I have seen, but with a little tweaking, they could be great!~ The cart is hard to navigate with a heavier load, but that is mostly because of the size of the swivel wheels.~ The only other negative is that I would like to bring the cart with me in the car, but the folded length is too tall to fit in a midsize car trunk, and barely fits across the floorboard of the backseat rendering the rear seats useless for passengers. I hope these issues are addressed because this really is a good product!10-2020 UpdateI have taken away 2 stars because of the wheels. If you are on flat even services only, this will work fine. If you take this basket over any uneven surfaces or roads with even a small amount of loose gravel, you'll have a problem from that point on. Small gravel pieces are stuck in the swivel front wheels, and somewhat in the back, causing it to be difficult to push and to lock up. I honestly think that this is a great quality metal cart with slats placed in the best possible directions, but the wheels are a huge defect. It is difficult to find a taller cart & frustrating that this one issue cannot be taken care of. Most of us would be happy to buy good replacement wheels if necessary that would work more efficiently. The last thing we need is a bunch of perfectly good metal carts filling our landfills because we can't get good replacements! I hope Lifestyle listens to the consumers on this!Mistakenly thought the wheels were rubber, they are not. The front swivel wheels maybe should be replaced with one larger rubber wheel (not reinforced polymer plastic wheels), that swivels; and the back wheels should be rubber as well. They would navigate more like a lightweight version of a grocery cart or wider bicycle tires that way. Really disappointed ...