Ground clearance significantly impacts comfort, handling (center of gravity), appearance, load capacity, and safety of all vehicles. Optimal height is always a trade off: lower clearance improves handling, stability at high speeds, and increases the responsiveness of steering, but higher clearance improves comfort and navigation over uneven terrain (includes all those dangerous potholes). A lower clearance vehicle is usually easier to get into (excepting super cars like the McLaren F1 of course).
Vehicles specifications list a single number for ground clearance — usually a measure taken from the middle undercarriage without passengers or cargo — but the optimal configuration is actually more complicated. Three passenger car measurements — front overhang, wheelbase midpoint, and rear overhang — characterize uphill and downhill driveway models with these minimums.
|All driveway access||5.11”||4.33”||5.51”|
Truck wheelbase midpoint clearance (using the Ford F-150 as a reference) ranges from 8.4″ to 11.5″ with the upper range required for very heavy loads and challenging terrain. In contrast, the New Beetle clearance is about 4.6″ which is very close to the passenger car minimum.
Structural lift kits
New Beetle suspensions can be physically modified with new shocks, coil springs and fittings to raise ground clearance. High Life sells three different lift “stages” that change both front and rear clearances.
|Lift Kit Options||Front Increase||Rear Increase|
|High Life Stage 1||1.5”||1.75 to 2.0”|
|High Life Stage 2||2.0”||2.0”|
|High Life Stage 3||2.5”||2.5 to 3.0”|
The New Beetle base trim shipped with 16-inch rims fitted with 205/55 R16 tires with a 24.9″ diameter. Fitting larger tires has an impact on ground clearance especially when used in combination with a suspension modification.
|Wheel Options||Tire Specification||Diameter (in)||Max Load (lbs)|
|16-inch rim OEM||Michelin 205/55 R16||24.9”||1356|
|17-inch rim OEM||Goodrich G-Force 255/45 R17||26.1”||1653|
|16-inch Stage 2||Continental 215/70 R16||27.9”||1764|
|16-inch Stage 3||Grandtrek SJ6 205/70 R16||27.3”||1609|
|16-inch Stage 3||Toyo Open Country 215/70 R16||27.9”||1708|
|16-inch Stage 3||Pirelli Scorpioin ATR 215/80 R16||30.1”||2271|
For example, fitting large 215/70 R16 tires (additional 1.5″ versus stock) with a Stage 3 lift kit (additional 2.5″) yields a net increase of 4″ over the stock clearance, or about 8.5″ total clearance at the wheelbase midpoint which is about the same as a typical pickup.
Instead of swapping out shocks and coil springs to achieve a fixed height, an air suspension system can dynamically change ground clearance electronically.
In an air suspension system, the coil is upgraded to an enclosed flexible rubber membrane, known as an air spring. These air springs can then be inflated and deflated at the touch of a button allowing for on-the-fly adjustments to clear obstacles or handle different cargo loads. The lift control interface can be embedded in the center dash console above the entertainment unit (the console is repainted red in example above).
Air Lift Performance makes a complete kit for the New Beetle with a 5.9″ front and 4.9″ rear drop.
While the primary purpose of air suspensions is to significantly lower the vehicle, it would be possible to set the highest lift point about an inch higher than stock and then support this rise with a high pressure setting (for a very stiff ride) when carrying a heavy load in the ute. This solution would allow for optimum handling for no load driving (the rear of a ute is approximately 150-200 lbs lighter than stock).