3.5m 1970 Truck Chassis- bugged/bad values

Looking at the practicality detail stats for this chassis suggests something is wrong with its height values. No matter how low it is, there is always an accessibility penalty, even if it is so low that there is also a ride height penalty. At the most extreme, with 600mm tires and double wishbone suspension, there is about a 7% accessibility penalty (as well as a ride height penalty). On any height that is actually viable for a truck the accessibility penalty is more around 30-40%.