Go Kart Inner Tube Size
The inner tube on my go kart recently broke, and when I took it out of it's tire, I saw a large "3.50-4". I also saw a small 78 on the opposite end of the tire, a "DDD" between the two previous mention marks, and a "D" by the valve. What do these markings mean and how can I find a correct replacement?
Photos below picture the previously mentioned makings respectively.