The two most common modifications that affect auto shipping is when a vehicle is lifted with larger tires or lowered to be under 3 inches off the ground. For lifted vehicles, which tend to be trucks, there are two main points the causes issues when you are coordinating their auto transport. First is the height, the tallest a car transporter can be in most states is 13ft 6inches. The extra 6 inch lift on the truck along with the larger tires making it a foot taller or more in some cases, poses a problem. The second issue to focus on is the extra width of the truck that is created by the the larger tires. Some trailers aren’t equipped to handle wheels that wide. Therefore, with units like these normally transported on 3 car trailers which handles both of those concerns. However, there are fewer of these auto haulers on the road, which can sometimes cause delays in getting the vehicles picked up when you want. As for the lowered vehicles, the easiest way to handle that is to ensure there are boards available for the driver so that he can cut the angle at which it is driven onto the trailer. This is something to keep in mind as not all trucks will have boards on their trailer.