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Complete Flat Towing Set Up for a 2021 Mini Cooper 4 Door  


Hi, I have a 2021 Mini Cooper, 4 door I looking to set it up to be flat towed with our RV, what are your recommendation. Thanks


Expert Reply:

I would be happy to help you set your 2021 Mini Cooper 4 door up for flat towing. To start out with you're going to need a base plate kit. You will want the Roadmaster Direct-Connect Base Plate Kit - Removable Arms item # RM-521884-5. This fits the convertible and hardtop - S models and the base model. The hidden bracket design provides improved aesthetics compared with standard brackets. I have attached a picture below of what this base plate kit will look like with the arms removed.

Next you will need lighting. For lighting you have some options. If you want something that installs quickly and does not splice into the vehicle wiring go with the Roadmaster Standard Magnetic Tow Lights item # RM-2120. For a more permanent solution I recommend the Roadmaster 6-Diode Universal Wiring Kit for Towed Vehicles with Separate Lighting item # 154-792-118158.

You will also need a supplemental braking system. Since you have a newer vehicle I recommend going with an installed system for more reliability and ease of use. The Demco SBS Stay-IN-Play DUO Supplemental Braking System item # SM99251 is a proportional braking system that never has to be removed, replaced, or reset. The DUO activates when your RV's brake lights go on and an inertia sensor in the towed car detects deceleration. You will experience no false braking with the Demco Stay-IN-Play.

You will also want the Roadmaster Battery Charge Line Kit for Towed Vehicles item # RM-156-25. This kit will ensure you don't have a dead battery when you arrive at your destination.

If you don't already have a tow bar for your RV you will want to use the Roadmaster Falcon 2 Tow Bar - Motorhome Mount - 2" Hitch - 6,000 lbs item # RM-520. The Falcon 2 tow bar has a large hookup radius to ensure simple, secure hookup. What this means is that, even if your towed car is not perfectly aligned with your RV, you will still be able to make the necessary connections.

You may also need a high-low adapter in order to keep your Mini Cooper level. I've added a link to a help article which shows you how to determine if you need an adapter as well as a link to our selection of adapters.

expert reply by:
Jerred H
2021 Mini Cooper Base Plate
2021 Mini Cooper Base Plate
(click to enlarge)

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