with b there might be a tyres issue, as I suspect the bike tyre is not ‘road legal’ – ie not properly marked with speed, size load rating etc and you have sort of turned it into a trailer.
“ECE Markings
For a tyre to be legally used in the UK, it must carry an ‘E’ or ‘e’ letter which shows that it is approved to European Standards for tyre loads and speeds.
Each tyre make and type will have a unique 5 or 6 digit number following the ‘E’ letter which is a reproduction of the certificate of approval number. The ‘E’ certifies that the tyre complies with the dimensional, performance and marking requirements of ECE Regulations (R30 in the case of passenger and R54 in the case of Commercial). The ‘E’ certifies that the tyre complies with the dimensional, performance and marking requirements of DIRECTIVE 92/23/EEC and relates to tyres without specific speed rating for example ZR tyres (Passenger only).
The number associated with the letter ‘E’ in the circle or ‘e’ in the rectangle is the code number of the government which granted the approval.
It should be noted that if there is no certificate number then the E or e mark is not valid.
At present ECE marks are not yet a legal requirement unless the regulations have been ratified by the parliament of the individual.
Tyres will now have additional e-marks for meeting the new European noise regulations.”
I’d also be interested to see how warm etc the tyre was after 30 miles at 50mph as well
what about a motorbike trailer ?
also re br s post – http://www.sussex.police.uk/help-centre/ask-us/roads,-driving-and-cycling/how-much-overhang-can-i-have-to-the-front-and-rear-of-my-vehicle
Ie I’ve driven with posts etc out the back (I tie a reflective vest with a flashing bike led pinned to it) – never stopped (*but never been ‘daft either)