Вот что по этому поводу мне ответил кругосветчик из ЮАР. Уве Шмидт.
Hallo Nikolai., Marina... awesome to hear from you..!
I hope you are both well.!
The tires i had., front and back was the: TKC 80’s
• those tires tho are 80% off-road 20% asphalt/tar.!
-/- however saying that., i will do (have done it twice before) that distance on the road.!
• the secret to getting good milage overall (especially on asphalt with any brand of tire) is to ride the tires as hard as possible..!
My pressures:
Asphalt..
Front: 3.3bar
Rear: 3.5bar
-/-
For off-road., or sand or any broken surface., i ride them as hard a pressure as it will allow me to ride without the bike being difficult to handle or endangering myself..!
-/-
I have ridden 3 x days in soft sand (Egypt’s White Desert) where at times my pressure were as low as:
Front: 0.8bar
Rear: 1.4bar
• whilst it makes handling the bike easier., there is lots of damage happening to the breakdown of the rubber because of the “heat” been generated in the “softish” tire.!
-/-
Hope this helps...