Thank you very much for your comment.

Unfortunately, I am not very good in the technical field therefore might have difficulties in using the 17 disc.

Regarding 150/60/18 tyres. I have found at bridgestone. The code is Batlax BT 14. Quite nice. But there are not available in neighboring areas.

So, if I understood you right, the 150/70-18 will still fit? I have found one in Russia, and want to get it, but was afraid wether it will fit in width-height at the back.

Thank you again for your assistance.
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Burn the soil, not the soul.