The standard rear tire size for this bike is 140/90-15 70H. You may be able to find another 15 inch tire that fits, for example 150/90-15 but the bike will not ride as smoothly on that.
2.0 bar front and back.
The Honda Shadow Spirit, recommends 29 psi in the front tire and 32-36 psi in the rear tire.
The standard or stock tire for this bike is 140/90-15. A tire that is 165/80/15 is probably the largest you can fit on this bike. If you install a tire that has a wider thread your cornering and turning may suffer and the bike may become dangerously unstable.
28 psi for the front and 36 for the rear tire.
200
32 front, 36 rear.
Front tire = 120/90-17 Rear tire = 160/80-15
29 psi front tire, 38 psi rear tire.
Is it a 1980 or a 2005? It does matter some what.
29 psi front, 36 psi rear.
front tire 120/90 HR 17 Rear tire 160/80 HR 15
29 psi front, 36 psi rear.