Some semi trucks use single axles, while others use double or tandem axles. Here are the differences between the two setups and why they matter.

Tandem axles are pretty much only good when you need to tow a whole lot. Otherwise, they just add weight. That might be why this 1971 Buick Electra 225 has one, as some rumors indicate it was a failed ...

[Stay on top of transportation news: Get TTNews in your inbox.] When it comes to spec’ing, getting the best fuel economy is about building a tractor with all the right pieces. Even with the best basic ...