Of course, Antti. Very far. In fact, I believe your mother tongue is almost unrelated to other languages!

However, after all these years, I still think your English is wonderful. And your meaning is always crystal-clear.

130/70 and 180/60-16. Spacers were used to move the sprockets outwards (see first page of this thread).

G.

the Shinko seems to be one of the narrower 180s. The Avon is quite wide and I`m in doubt that cutting the edge will be sufficiant. Don`t know about other models.

Just to be clear on this
The Shinko requires only a front fender raise

The Avon 150/80ZR16 and 130/70ZR16 require a front fender raise and half rings and extra link in the chain and is the only MOT legal change currrently

Every other combo of 16 inch tire(180/60-16or 180/xx-16) requires all of the above and spacers to move the chain out, longer side and center stands.

17 inch conversions require wheels,swingarm/fork changes and brake holder relocations or upgrades and side stand and center stand changes.

Welding up your wheels to 17 requires roughly comparable outlays of cash, side and centerstand changes braided brake lines or brake upgrades

Is that about it?

Being overly precise I don`t completely agree.

The 150/80 is higher than the 180/60 so it will require longer stands also.
The 150/80 is mountable w/o the halfrings (legally) but you`ll have the disadvantage to lose most of the range one needs to properly adjust the chain (so using the halfrings makes sense but is not a must).

130/70 w/ 180/60 can be run legally, even here in Germany.
What Ducati Germany issued for the 130/70 150/80 Avon combination is no official TÜV approval but a document of compliance. In some countries this won`t make a difference. Here and in some other countries that only means that Ducati says it`s ok using them. You still have to get that change officially approved by the TÜV, MFK or whatever organization as they will check if the necessary mods and clearances are ok.
A DOC will make it a bit easier to get the official approval. Legalizing the 130/70 180/60 combination is not a problem if the tires speed range is above the bikes top speed, the clearances are fine and the conversion is done well.
In Italy it`s again another story. Bureaucracy is a bit more complex there

G.

Good work, higgy and paso750. Thanks. I'm not sure if your summary above includes this:

Swing arm changes include 3 basic mods

mod 1 change to a 907 swing arm( or similar 17 inch swingarm)

mod 2 Skins picture of a modded cross bar

mod 3 cut and lengthen the 16 inch swing arm

Anyone have anything to add ?

I'm glad we don't have to deal with that legal B.S. here in California