Is there a recommendation for tire pressure of sack barrows (with 200 kg max load)? The pressure can obviously not be maximal (e.g. the maximum of the tire) since that makes it hard to climb stairs. It can also not be too low because this would require increasing the presure if one plans to transport more weight; a recommendation for 2 or max. 3 intervals (e.g. 0 kg to 50 kg, 50 kg to 150 kg and 150 kg to 200 kg) would be appreciated as well.
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