What is variable ratio steering? Variable-ratio steering is a system that uses different ratios on the rack in a rack and pinion steering system. At the center of the rack, the space between the teeth are smaller and the space becomes larger as the pinion moves down the rack.
When was the steering system invented? Since steering wheels first appeared in 1894, they have shown an unending series of innovations.
How do I know if I have variable ratio steering? You might also want to check the underside of your spare tire cover. There should be a Service Parts Identification label. Check the label for the code NV7. If it’s there, then your car has variable power steering.
When did power steering become standard? By the start of the 1960s, power steering was an option or standard on all American-built vehicles. In the late 1960s and into the early 1970s, the big steering wheel still graced steering columns.