Hi, i'm having problems with consistency of finding the correct scale when building with unimog tires (Tire 94.3 x 38 R) are you building on the 1:10, 1:12 scale or 1:11 scale?
The unimog tires are about 4 1/4 inches in diameter. Some semi tires are 22 1/2 and 36 inches in diameter. A semi is about 8 1/2 feet wide.
Do the math: