I did tow Rineke‘s M3W for about 20 km which didn’t gave any problem.
Last week we towed my M3W also for about 10 km and this also didn’t gave a problem.
On both occasions I was steering the car and it all sounded just as normal.
When towing with two M3W's the problem arises where to put the line on the towing car.
I used the roll bars but you need use a soft line above the bodywork and a towel what you fix with some tape on the body.
