How to Raise Car Clearance: The Complete Guide

Low bumper, scratches on the doorsteps and the constant fear of catching the bottom of a lying police officer are direct consequences of reduced ground clearance, requiring immediate intervention. Addressing the problem How to raise the clearance of the car It is often critical for vehicle owners whose suspension has worn or initially failed to meet the conditions of use on domestic roads. Increasing the distance between the lowest point of the body and the road allows you to feel more confident on a primer, in a deep track or when loading the car with passengers and luggage.

Technically, the lifting process depends on the suspension design: for spring shock absorbers, it is the replacement of elements with longer ones or the installation of slots, and for torsion systems, tension adjustment. Owners Hyundai Solaris, Kia Rio or Renault Logan They often look for ways to add 20-30mm to forget about the sounds of plastic grinding about the unevenness of the asphalt. It is important to understand that any interference with the geometry of the suspension changes the center of gravity and kinematics of the levers, which requires a balanced approach to the choice of method.

There are several proven ways to increase ground clearance, each with its own financial and technical implications. Budget options like spacers are available to most motorists, while a professional elevator requires replacement of shock absorbers and springs entirely. Below we will analyze the method in detail, evaluate their impact on the chassis life and determine which option will be optimal for your car in the current conditions.

Diagnostics of the current suspension condition

Before purchasing parts for lifting, it is necessary to accurately measure the current clearance and assess the degree of wear of standard elements. It is often thought that the car has sat down, although in fact the old, “tired” springs that simply sank from time and loads have failed. Measure the distance from a flat horizontal platform to the bottom point of the engine or the protection of the crankcase, having previously made sure that there is no excess cargo in the trunk.

Visual inspection can also reveal critical defects that cannot be ignored when making a decision to lift. If the springs are visible turns with a changed pitch or corrosion is noticeable, their replacement is mandatory regardless of whether you plan to lift the car or leave everything as it is. Diagnostics It should include checking shock absorbers: if they flow or do not hold off, installing pads will only accelerate their final failure.

⚠️ Attention: Do not attempt to lift a vehicle with a completely faulty suspension. Installation of pads on the "killed" shock absorbers will lead to loss of controllability and possible destruction of the mounting places.

For accuracy of measurements it is recommended to use a laser level or a special probe, although in garage conditions it is often bypassed by ordinary roulette. It is important to take measurements at four points: front left and right, and back according to a similar scheme to identify distortions. A difference in height of more than 20 mm between the sides may indicate problems with the spars or critical wear of one of the springs.

Method of installing paddles

The most common and affordable way to increase ground clearance is to install spacers between the body and suspension elements. These parts are made of aluminum, polyurethane or durable rubber and mounted on top of a regular shock absorber support cup. Aluminum variants are considered more durable and reliable, since the metal is not subject to shrinkage and deformation under the weight of the car, unlike polymer counterparts.

The installation process requires partial disassembly of the front suspension: it is necessary to remove the wheel, disconnect the stabilizer rack and unscrew the shock absorber mount bolts. After dismantling the rack on the top cup, a spacer is installed, which is fixed by regular fasteners or additional studs, depending on the design. For the rear beam or multi-link, spring spacers are often used, which are inserted inside the turns or under the lower attachment.

It is important to note that the use of slots thicker than 25 mm may require replacement of the stabilizer racks with longer ones or the use of adapters. The standard elements may be short, which will lead to constant tension of the stabilizer and deterioration of the treatment of irregularities. Suspension geometry When installing the paddles, the changes are slightly, if not exceeding the reasonable limits of the elevator, but the angles of wheel collapse may require adjustment on the stand.

Replacement of springs and shock absorbers

A radical, but technically competent solution is to replace regular springs with reinforced versions with a large number of turns or a diameter of the wire. These kits are often labeled as "bad roads" or "full load" and provide a lift of the body by 30-50 mm without disturbing the geometry of the mounting shock absorbers. In this case, shock absorbers It is also recommended to replace them with elongated ones so that they work in full range and do not fail prematurely.

When selecting new springs, you should pay attention to the stiffness class, which is usually indicated by the color of the marking (for example, yellow, green or blue). Installing too rigid springs will make the car roll on the road and rigid on minor irregularities, which will reduce the comfort of passengers. A properly selected set allows you to maintain the factory characteristics of handling, only slightly increasing the rolls in corners due to the shifting of the center of gravity.

⚠️ Attention: Installation of springs from another model of the car without accurate calculation of characteristics can lead to breakage of the mounting places or destruction of the body at high speeds.

The cost of this method is much higher than installing paddles, but the resource and safety of operation remain at a high level. Many SUV owners Toyota Land Cruiser or Mitsubishi Pajero This is the way to prepare the vehicle for expeditions. Quality components from well-known brands ensure that the suspension will work predictably in all conditions.

Resource of reinforced springs

Reinforced springs serve longer than normal by 20-30%, since they have a load reserve and are less susceptible to residual deformation. However, their installation makes sense only in pairs with new shock absorbers.

Increased wheel size

One of the easiest ways to visually and actually lift a car is to install larger diameter wheels. Replacing the regular wheels with a 55-60 rubber profile with wheels with a 65-70 profile allows you to win from 15 to 30 mm of real ground clearance. This method does not require any intervention in the suspension design, but requires checking the arch spaces for the wheel to hit the body elements when turning or compressing.

When increasing the diameter of the wheel, it is important to take into account the effect on the speedometer readings and acceleration dynamics. Heavyer and larger wheels increase unsprung weight, which makes the engine run at a higher load and can lead to increased fuel consumption. Tyre parameters must strictly comply with the permissible values specified in the technical documentation, so as not to overload the hub bearings.

There is a table of the dependence of the change in clearance on the size of the tire, which should be guided when choosing:

Staff size	New size	Increased clearance	Impact on speedometer
195/65 R15	205/65 R15	+6 mm	Minimum
195/65 R15	215/60 R16	+12 mm	Notable (+2 km/h)
205/55 R16	215/60 R16	+18 mm	Mean (+3 km/h)
215/65 R16	225/70 R16	+22 mm	Notable (+4 km/h)

Do not forget that wide rubber can worse divert water from under the wheel, increasing the risk of aquaplaning. In winter, a high and narrow tire is often more effective than a low and wide one, so the size selection should be seasonally oriented. If you plan to drive in deep snow, the outer diameter should be the priority, not the profile width.

Impact of lifting on controllability

Any increase in the height of the center of gravity inevitably affects the behavior of the car in motion, especially at high speeds and in cornering. The car becomes more prone to rolling, and the reactions to steering can become less acute and late. This is especially noticeable in passenger cars with an initially low landing, where even a 30 mm elevator changes the nature of the control.

The critical parameter remains the work shock absorbers and transverse stability stabilizers. If the body is not elongated when lifting the stabilizer rack, it will be under constant stress, which will lead to rapid wear of the Silentblocks and bushings. In an emergency, such as a sharp detour of an obstacle, the altered geometry can trigger skidding or rollover.

However, for off-road driving, these disadvantages are compensated by the ability to drive where there was a risk of damaging the engine crankcase before. For urban operation, the negative effects can be minimized by choosing the lowest possible height of the climb. The balance between patency and safety is a key factor when deciding on suspension modification.

Legal aspects and registration of changes

In accordance with the technical regulations of the Customs Union, changes in the design of the vehicle that affect safety require mandatory registration. Raising ground clearance, replacing springs with non-standard or installing pads are formally considered a design change unless these parts are certified specifically for your car model. In practice, if the changes are not noticeable and do not disrupt the operation of lighting devices or wheel angles, traffic police officers rarely initiate an inspection.

However, during the scheduled technical inspection, questions may arise if the geometry of the suspension will be clearly different from the factory. Experts may refuse to issue a diagnostic card if they believe that the changes reduce the safety of operation. The safest legal route is the use of certified lift kits for which the manufacturer has documents of conformity.

⚠️ Attention: Installation of wheels outside the arches or a heavily modified suspension can cause a refusal to register a car or cancel the insurance policy in the event of an accident.

If you are planning serious training of an SUV for sports or expeditions, it is better to consult in advance in the testing laboratory. For normal urban operation and light lift owners are often limited to the installation of quality components that do not require intervention in the welded body elements. Always keep checks and certificates for purchased parts, they can be useful when communicating with technicians.

Frequently Asked Questions (FAQ)

How safe is it to raise the clearance without replacing the shock absorbers?

Without replacing shock absorbers, it is safe to use stretchers up to 20 mm high. Exceeding this value will lead to the fact that the shock absorber rod will be constantly in an elongated state, which will sharply reduce its life and worsen the suspension operation on the break.

Does the lifting of the body affect the warranty of the car?

Yes, any interference in the design of the suspension, including the installation of parcels, can cause a refusal in warranty repair of the chassis, steering and even the body. The dealer has the right to fix the fact of abnormal operation.

Which material is better to choose: aluminum or polyurethane?

Aluminum sheds are considered more reliable, as they do not deform over time and withstand high loads. Polyurethane analogues are cheaper, but can "sit" or crack in severe frost, although they are better at quenching small vibrations.

Do I need to make a break-down after the clearance rise?

I will. Changing the height of the body changes the position of the suspension levers relative to each other, which directly affects the angles of installation of the wheels. Without adjustment, you will get uneven wear of rubber and the car is pulled aside.

Can I lift only the back of the car?

Technically possible, but it will disrupt the geometry of the body and the light of the headlights. If the back of the sank due to wear of springs, they need to be replaced. Artificial lifting only the “feed” will make the car rolling and dangerous on the road, especially when maneuvering.