The minimum pressures for 3.25 x 19 tyres are 16-lbs. front and 18-lbs. rear, and are sufficient for a solo rider of average weight.
The carrying of a pillion passenger will make additional pressure in the rear tyre essential, and also the adjustment of the rear suspension should be altered.
Pressures for extra loads are as follows :
| Load in Pounds | Pressure in Pounds per Square Inch |
| 200 | 16 |
| 240 | 18 |
| 280 | 20 |
| 350 | 24 |
| 400 | 28 |
| 440 | 32 |