420/85R34 – tyre pressure and load tables

Tyre pressure for 420/85R34: 20 tyres in this size from 12 manufacturers, 15 of them with the manufacturer's verified load and pressure table. At 40 km/h the tables give a maximum load of 2650–3075 kg per tyre, depending on model and load index. Pick the pressure from the load per tyre and speed on each tyre page.

Tyre	Load index	Diameter	Max load in table
Alliance Agri Star II	147D	1578 mm	no verified table
Alliance Agri Star II	142D	1578 mm	2661 kg at 1.4 bar, 40 km/h
Alliance Farmpro II	142D	1578 mm	no verified table
BKT Agrimax RT 855	142A8	1578 mm	2650 kg at 1.6 bar, 40 km/h
BKT Agrimax RT 855	147A8	1578 mm	3075 kg at 2.4 bar, 40 km/h
Bridgestone VX-Tractor	147D	1589 mm	no verified table
Continental Tractor85	142A8	1584 mm	2650 kg at 1.6 bar, 40 km/h
Continental Tractor85	147A8/147B	1592 mm	3075 kg at 2.4 bar, 40 km/h
Firestone Performer 85 Extra	142D/139E	1572 mm	2905 kg at 1.6 bar, 40 km/h
Firestone R1085	142A8/139B	1565 mm	2650 kg at 1.6 bar, 40 km/h
Goodyear Optitrac	142A8	1589 mm	no verified table
Kleber Traker	142A8/139B	1581 mm	2650 kg at 1.6 bar, 40 km/h
Michelin AgriBib	147A8/147B	1595 mm	3075 kg at 2.4 bar, 40 km/h
Michelin AgriBib 2	147A8/147B	1589 mm	3075 kg at 2.4 bar, 40 km/h
Mitas AC 85	142A8/142B	1598 mm	2650 kg at 1.6 bar, 40 km/h
Mitas AC 85	147A8/147B	1593 mm	3075 kg at 2.4 bar, 40 km/h
Titan AgraFLEX	142A8	1589 mm	no verified table
Trelleborg TM600	147A8/147B	1575 mm	3075 kg at 2.4 bar, 40 km/h
Trelleborg TM600	142A8/139B	1578 mm	2650 kg at 1.6 bar, 40 km/h
Vredestein Traxion 85 II	142A8/142B	1575 mm	2650 kg at 1.6 bar, 40 km/h

Values come from the manufacturers' published load and pressure tables and are only shown where the table is verified. Open a tyre for the full table. See disclaimer.

Size equivalent in the tyre data: ≈ 16.9x34, ≈ 16.9R34