I am very good with tools. So this bike trailer was a breeze to put together, even though the directions where completely horrible. I took someone else's advice from a review and tried to put electrical tape around the rim to stop the spokes from puncturing the tube, well I only did the front tire and I ended up tearing the tube myself. As for the other tires and tubes traveled about 20 miles or so on rough terrain, dirt roads, and pavement and they have held up great. I wish they had a better angle or more back support for the kids. We just put a pillow behind the kids and they looked a lot more comfortable. As for the service I woke a guy up at night to find out shipping details and he was much obliged to help me. All in all for the money its great. If I had the money I would have bought a more expensive one. THANK-YOU Hope this helps anyone