I am looking into having an open trailer built for my 2015 M3W.
I want to keep the car on the trailer when parked in a single garage, so I do not want to have the trailer any larger than it absolutely needs to be.
I would keep the weight off the trailer wheels by stands etc. when parked up, and will only contemplate a twin axle for safety.
I have spoken to a couple of potential bespoke trailer builders, both came up with the same answers -- go twin axle for safety (fully agreed) and put the car on the trailer backwards so that 12 inch wheels can be used and the front wheels can sit in line with the trailer wheels. In other words the trailer width can be controlled. 10 inch wheels are not recommended by them, and the axle positioning can be tweaked to work for the balance point of the car so that the trailer is not tail heavy.
I am comfortable with these suggestions, but could do with opinions as to whether I could winch the car onto the trailer regularly by means of a strap on the roll hoops without causing undue strain or any damage.
My apologies for the rambling, but would welcome views....
