What car do you need to tow a motorcycle? Guide on weights and maximum masses

Hitching a trailer to transport your motorcycle might seem simple until you reach the first roundabout with crosswinds, a long downhill slope, or a ramp, and realize that not all cars behave the same way. The difference between "I can drag something" and "I can tow with control" is very noticeable on the road.

In Spain, the confusion usually starts with a bad mix of expectations, regulations, and MMA (Maximum Authorized Mass) figures: we buy a car for power or aesthetics, we choose a trailer for its capacity, and when we add it all up, we discover that the combination doesn't fit the license we hold or that the car is under much more strain than we expected.

What makes a car good for towing a trailer

Engine power matters, but it is not the most decisive factor. What really makes the difference is:

• Torque: Allows moving the combination without straining the transmission.
• Car weight and wheelbase: A heavier and longer car transmits stability to the trailer.
• Robust transmission and brakes: Essential for maintaining control and braking safely on slopes, in corners, or under load.

For example, a medium-sized SUV with a lot of horsepower but light weight can perform worse than a long estate car (station wagon) with less power but a better base. The key is for the car to have "authority" over the trailer, preventing it from pushing and disrupting the trajectory.

When the car is not suitable, the symptoms are clearly visible: the steering feels nervous, the car sways when passing trucks, and generally, there is a sensation that the trailer is deciding the path, not you. And, in the end, it is not simply discomfort: it is a loss of safety margin in the face of any unforeseen event.

MMA MMR and licenses

Before choosing a car or trailer, you must differentiate three concepts:

• Car MMA (Maximum Authorized Mass): Includes the weight of the car itself, passengers, fuel, equipment, and cargo.
• Trailer MMA: Weight of the trailer plus everything it carries (motorcycle, accessories, luggage).
• Car MMR (Maximum Towable Mass): This is the maximum weight your car can tow according to the technical data sheet.

Where to find the MMR

• Vehicles prior to 2012: Left side, section MMR s/f (without brake), c/f (with brake).
• Vehicles from 2012 onwards: Right side, sections O.2 (without brake) and O.1 (with brake).

Attention: If there is only one MMR, it means the car can only tow a trailer with brakes whose MMA is equal to or lower than that figure. If there is none, the car cannot tow, as happens in some models like the KIA Picanto III.

Licenses and limits

• Trailer MMA ≤ 750 kg: Class B license, no separate license plate (they carry the towing vehicle's plate) and no additional ITV (inspection).
• Trailer MMA > 750 kg: Class B license, but with its own red license plate, insurance, and mandatory ITV inspection.

With a Class B permit, you can drive a combination up to 3,500 kg. Exception: If the car has an MMA greater than 3,500 kg, it can still tow a trailer of up to 750 kg, reaching a total combination of 4,250 kg.

For larger combinations:

• B-96: Up to 4,250 kg with a trailer > 750 kg (practical exam only).
• B+E: Up to 3,500 kg car and 3,500 kg trailer.

Tip: Never buy a car and trailer at the limit. Leave a margin; this way you will have more safety, less wear and tear, and less stress behind the wheel.

In addition, other legal obligations must be met: lights, signaling, tire condition, trailer brakes if applicable, and load distribution. A legal but poorly balanced combination can be dangerous, especially on the highway or with crosswinds.

In the blog, we have previously explained how to transport a motorcycle safely and legally, covering correct tie-downs and exploring some tips and legal aspects.

How to choose a car for towing without mistakes

Before deciding, keep these points in mind:

1. Define the trailer and its real MMA: Do not trust the "I'm just carrying a light bike" idea.
2. Check the car technical sheet: Maximum towable mass with brake and without brake.
3. Sum the MMAs of the combination: To know exactly which license you need.
4. Do not buy at the limit: Leaving a margin means safety and savings on maintenance.
5. Check stability and braking: A powerful car does not always mean it is safer with a trailer.

Safe driving with a trailer

Even if you have driving experience, the trailer changes the vehicle's behavior:

• Longer braking distance: Increase separation from other vehicles and anticipate maneuvers.
• Adapted speed: Respect the legal limit and adjust according to load, road, and weather.
• Curves and roundabouts: Reduce speed before entering, take wide lines, and avoid sharp turns.
• Crosswinds: Extreme caution, especially when overtaking trucks.
• Slopes: Use low gears going up and engine braking going down.
• If the trailer starts to fishtail: Release the accelerator smoothly, keep the steering wheel firm, and avoid braking abruptly.

Practical summary

• Power alone is not enough: look for weight, long wheelbase, robust transmission, and brakes.
• Always respect the MMA and your driver's license limits.
• Avoid light cars or compact SUVs for large motorcycles or frequent use.
• Leave a margin and adapt your driving to the combination.

Choosing the right car is only half the battle. The combination will only work well if the trailer is the right one and is well configured. In this sense, the Littleway Team foldable trailer is a very practical option: it takes up little space, hitches easily, and is made specifically to carry motorcycles, so it keeps the bike stable without you having to overthink it.

In the end, towing well is a matter of foresight, balance, and respect for regulations, not just horsepower or aesthetics.