Motorcycle Safety & Driveability: Storage mechanism for Two Wheelers - Tyre/s - Bikes, tyre, puncture

Question
Dear Andrew

Storage mechanism for Two Wheelers  - Tyre/s - Bikes
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There are Two Wheelers, Three Wheelers and Four Wheelers running on the Road.


What i observe in Two Wheelers i.e Bikes is there is no storage mechanism
for keeping extra Tyre/s which can be useful to the Driver in case there
is a tyre puncture while travelling on the road.

In Two wheelers Scooters, the tyre has a smaller circle radius,the extra Tyre
in a Scooter is fixed behind the rear tyre seat.

In three Wheelers Auto rickshaws the extra tyre is kept near engine placement
i.e rear/back door

In four Wheelers viz cars, jeeps the extra tyre and fixing tools can be kept in the storage mechanism i.e rear door.


In four Wheelers heavy vehicles viz Buses, Trucks, Lorries etc the extra tyre can be kept down below fixed.  

Is there any way to Keep a Storage mechanism for Bikes two wheelers ?. What could be the design for the same
if it is to be achieved ? can we keep the tyre below the seat where the driver is seating ?


Note : Observed that the tyres for each of the two, three and four wheeler vehicles is a circle and has a Different Radius
and circumference.

Awaiting your Reply,

Thanks & Regards,
Prashant S Akerkar

Answer
Prashant,
Forgive me if I'm wrong but I can only assume that you are not a motorcyclist? Many of todays bikers, especially those who go for long distance touring, (by that I mean the length of Africa, across the USA etc.) will have changed the wheels of their bike so that they can use inner tubes as opposed to tubeless. That way, with a good set of tyre levers and a spare tube or puncture repair kit, repairs can be made along the way. The problem with tubeless tyres is that they are so firmly attached to the rim of the wheel, it is very difficult to 'break the bead' that supports the tyre, holding it in place. For the same reason, bikers don't carry a spare tyre as they can't just fold up and be put somewhere. Can you imagine how difficult it can be to carry a 16 or 17 inch solid lump of rubber?
Car/truck/lorry tyres tend to be smaller and the vehicle is large enough to justify carrying a spare.
If a motorcyclist sets off on his bike knowing that his tyre is likely to fail or become illegal, in my opinion he should be given the full clout of the legal system! A proper motorcyclist checks his tyres before setting out, if he doesn't or ignores any faults with them, he is an idiot!
I hope this helps answer your question which to many bikers, would have an obvious answer I'm afraid.