1.9″ vs 2.2″ RC Tires: Which is Better?

1.9 vs 2.2 RC Tires

There are hundreds of tires on the market in different sizes and treads. So you need to consider these two points when you choose tires. Different treads are used for different terrains, and what effect do different-sized tires have on ride performance? Running the wrong size tires can make it difficult to drive an RC car. Choosing the right size tires can improve the overall performance of your ride.

Below I will compare the 1.9″ and 2.2″ tires in detail, which are commonly used on 1/10 scale RC cars, like crawlers, off-road cars, etc.

What Does 1.9″ or 2.2″ Mean in RC Tires?

In RC tires, 1.9″ and 2.2″ actually refer to the inner diameter of the tire, that is, 1.9 inches and 2.2 inches. For example, 1.9-inch tires are mounted on 1.9-inch rims. The pictures below clearly describe the dimensions of both, and they are for RC cars of different scales. Of course, you can also choose one of them according to different needs. 1.9 inches and 2.2 inches tires

1.9″ vs 2.2″, Which is Better?

There are many different sizes of tires on the market, usually, 2.2-inch tires are larger than 1.9-inch tires.

So you can clearly see that a car running 2.2-inch tires has more ground clearance. This is very beneficial for crossing some obstacles, especially RC crawlers. Plus, the newer wheels mean more ground contact, so you get more stability.

What you need to know is that some RC cars are not compatible with larger tires. So before you upgrade from a 1.9″ to a 2.2″, you need to confirm that the wheel well clearance has enough room. In addition, you can also avoid this embarrassing problem by adjusting the height of the body and other methods.

RC Crawler

One thing you have to realize is that bigger tires are not a good thing.

Larger tires increase traction, but also bring more power consumption. This means your motor and battery will be under more stress, and too much heat will burn your powerplant! If you feel underpowered or overheated, you’ll need to change the gearing and upgrade the powertrain.

Large tires will raise the car’s center of gravity, making it easier to roll over. To overcome this, you have to make adjustments in driving skills or chassis settings.

Compared with 2.2″ tires, the 1.9″ center of gravity is lower, and it is better in cornering and side slopes.

Does Tire Size Affect the Speed of an RC Car?

The tire size has a complex relationship with the driving speed. In theory, the ratio of the original car tires to the vehicle is the most reasonable. The tire size is related to the dynamic performance of the vehicle. Even if the RC car is replaced with big tires, it may be underpowered and unable to run. The size of the tires determines the top speed you can travel.

Under the same power system, the impact of big tires on RC cars:

  1. The driving torque becomes larger, which improves the climbing ability.
  2. The acceleration performance of the RC car is reduced.
  3. The maximum speed of the RC car will be increased.

The influence of the width of the tires on the speed of the RC car:

The wider the tire, the greater the area of ​​contact with the ground. This is greater than the power consumption required for narrow tires.

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