What in the World is: Crawl Ratio?
Crawl Ratio. You hear about that a lot when you’re talking about SUVs or Truck – especially when it comes to off-road capabilities – but you never hear about it concerning sedans or coupes. Do all vehicles have a Crawl Ratio??? Enough with the questions, let’s get down to some answers!
In a nutshell, Crawl Ratio is a measurement of the lowest gear ratio a vehicle is capable of. A lot of things work together to determine the crawl ratio including transmission, tires, drive train and overdrive differential and can vary immensely from vehicle to vehicle, even within the same manufacturer and class. It’s referred to as the “Crawl Ratio” because it’s the slowest your vehicle will move at a particular RPM in it’s lowest gearing (usually either first gear or reverse, however most people only take into consideration the forward moving gears).
All vehicles have a crawl ratio just like all vehicles have a city and high way “MPG” rating. However for some vehicles it’s not the main selling point (for instance, very few people purchasing a Chevy Malibu will ever even consider the crawl ratio of the vehicle just as most people purchasing a large truck don’t really put much thought into fuel consumption) so you won’t hear anything about it and it may not even be measured by the manufacturer.
Now that we have that out of the way, why do people even care about the Crawl Ratio of a vehicle, how in the world is that information helpful? The utility of the Crawl Ratio is all about torque. For large trucks a lower Crawl Ratio is helpful to get a load in to motion, especially on steep inclines. It’s also very useful for off-roading applications for climbing steep inclines and traversing obstacles in a controlled manner. Lastly, a higher Crawl Ratio will provide better torque!
Thanks for reading. I hope you’ve found this article helpful. If you’d like to browse our Jeeps (the Kings of the Crawl Ratio) than you may do so here. If you have any further questions don’t hesitate to contact our World Class Internet Department online or by telephone at (800) 680-0835.
Jason Lee Gibson
Your Automotive Digital Informant