First, clarify the purpose of the modification before getting started—that is, which aspects of performance you want to improve
The modifications I’m referring to here are in the strict sense—changes made to enhance or improve certain aspects of a vehicle’s original factory design. Simple body decorations do not fall under the category of modifications. Before modifying, vehicle owners must be clear about their goals and which performance aspects they want to enhance. Only then can they design and implement a targeted plan. Otherwise, either the desired results won’t be achieved, or the money spent will be wasted.
Second, prioritize tires—never compromise
Tires are the most important factor in showcasing a vehicle’s performance, so the foundation of any modification lies in the tires. No matter how good a vehicle’s four-wheel drive capability,
off-road ability, power, or braking performance may be, it all comes down to the tires. Therefore, after clarifying your modification goals, the first thing to do is choose the right tires. There are many types of off-road tires, each designed with different tread patterns for various road conditions—sand, mud, gravel, etc. Each tread pattern has its own characteristics, and these characteristics often conflict: enhancing one aspect of performance may weaken another. Therefore, tire selection must align with the types of terrain you plan to drive on. Additionally, tire size is a crucial factor. For example, if you want to improve your vehicle’s ground clearance, you’ll need to lift the chassis to increase the minimum distance between the vehicle and the ground. The lowest point of most vehicles isn’t the transmission but the “differential housings” on the front and rear axles. The only way to increase this clearance is by installing larger tires. That’s why most off-road enthusiasts opt for tires larger than the factory size—bigger tires also perform better on sand and mud.
Third, chassis modification is a systematic project—“comprehensive” is the key word
There are two main purposes for chassis modifications: one is to adapt to more challenging road conditions, and the other is to accommodate larger tires. Factory chassis designs are largely focused on comfort for urban driving, which often means softer suspensions that don’t provide good grip or stability on off-road terrain. Therefore, chassis suspension modifications should start with enhancing the suspension system’s performance—replacing suitable springs, shock absorbers, bushings, control arms, skid plates, and other components to improve reliability. Second, after installing larger tires, the original suspension travel may no longer suffice, so increasing the suspension travel becomes necessary. It’s important to note that chassis modifications are a serious systematic project. The compatibility of parts is key, and ensuring all necessary components are upgraded is equally critical. Only comprehensive modifications can meet the needs of a lifted suspension system; otherwise, issues may arise, and safety could even be compromised.
Fourth, power and brake system modifications
Off-road vehicle power modifications differ from those of regular cars. For smaller vehicles, engine modifications are often aimed at racing, with a focus on increasing horsepower—typically through turbocharging or supercharging. However, off-road vehicles prioritize torque, especially low-end torque. Fundamentally, the only way to significantly boost low-end torque is by installing a larger-displacement engine. Currently, Chinese law does not allow vehicle owners to replace engines without authorization, so there’s limited room for modification in this area.
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