Ride height
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Ride height or ground clearance is the amount of space between the base of an automobile tire and the lowest point of the automobile (typically the axle); or, more properly, to the shortest distance between a flat, level surface, and the lowest part of a vehicle other than those parts designed to contact the ground (such as tires, tracks, skis, etc.). Ground clearance is measured with standard vehicle equipment, and for cars, is usually given with no cargo or passengers.
Function
Ground clearance is a critical factor in several important characteristics of a vehicle. For all vehicles, especially cars, variations in clearance represent a trade-off between handling, ride quality, and practicality.
A higher ride height and ground clearance means that the wheels have more vertical room to travel and absorb road shocks. Also, the car is more capable of being driven on roads that are not level, without the scraping against surface obstacles and possibly damaging the chassis and underbody.
For a higher ride height, the
Example ride heights
A road car usually has a ride height around 16–17 cm (6.3–6.7 in), while an
The table below provides average ride height for different car types which were available on the market in India in 2020:[2]
Avg. ride height | Car type |
---|---|
135–140 mm (5.3–5.5 in) | Sports car |
165 mm (6.5 in) | Sedan |
168 mm (6.6 in) | Hatchback |
170 mm (6.7 in) | Compact car |
190–200 mm (7.5–7.9 in) | Compact SUV |
225 mm (8.9 in) | SUV
|
Specialized uses
Underslung frame
Some cars have used underslung frames to achieve a lower ride height and the consequent improvement in center of gravity. The 1905-14 cars of the American Motor Car Company are one example.[3]
Self-leveling
Height adjustable
Some modern automobiles (such as the
Adjustable shock absorber
Other, simpler suspension systems, such as coilover springs, offer a way of manually adjusting ride height (and often, spring stiffness) by compressing the spring in situ, using a threaded shaft and adjustable knob or nut.
Aftermarket
Lowering a car's
Military
For
Trucks
18-wheel
Buses
In some areas buses are required to have a ground clearance of at least 100 mm (3+15⁄16 in).
See also
References
- ^ 1987 Ferrari F40 specifications | technical data | performance | fuel economy | emissions | dimensions | horsepower | torque | weight
- ^ How much Ground Clearance is Good Ground Clearance in India?
- ^ "Under-Budget Underslung - 1929 Dodge Roadster - Hot Rod Magazine". www.hotrod.com. Archived from the original on 2007-01-02.
- ^ "BMW Technology Guide : Self-levelling suspension". BMW. Retrieved 2018-05-16.
- ^ Eibach
- ^ H&R
- ^ "Code of Practice for Buses", section 3.2: Ground Clearance