420/85R30 – tyre pressure and load tables

Tyre pressure for 420/85R30: 20 tyres in this size from 13 manufacturers, 12 of them with the manufacturer's verified load and pressure table. At 40 km/h the tables give a maximum load of 2500–3370 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	140D	1476 mm	2519 kg at 1.4 bar, 40 km/h
Alliance Farmpro II	140A8/140B	1468 mm	no verified table
Alliance Farmpro II	140D	1468 mm	no verified table
Alliance Farmpro Radial 85	140A8/140B	1468 mm	no verified table
BKT Agrimax RT 855	140A8	1475 mm	2500 kg at 1.6 bar, 40 km/h
BKT RT 857	140A8	1476 mm	2500 kg at 1.6 bar, 40 km/h
Bridgestone VX-Tractor	142A8	1486 mm	no verified table
CEAT Farmax R85	147D/150A8	1476 mm	3370 kg at 2.4 bar, 40 km/h
CEAT Farmax R85	140D/143A8	1476 mm	no verified table
Continental Tractor85	140A8/140B	1486 mm	2500 kg at 1.6 bar, 40 km/h
Firestone Performer 85 Extra	140D/137E	1475 mm	2740 kg at 1.6 bar, 40 km/h
Firestone R1085	140A8/137B	1469 mm	2500 kg at 1.6 bar, 40 km/h
Goodyear Optitrac	140D	1486 mm	no verified table
Kleber Traker	140A8/137B	1474 mm	2500 kg at 1.6 bar, 40 km/h
Michelin AgriBib 2	145A8/139D	1487 mm	2900 kg at 2.4 bar, 40 km/h
Mitas AC 85	140A8/140B	1478 mm	2500 kg at 1.6 bar, 40 km/h
Titan AgraFLEX	142A8	1486 mm	no verified table
Titan Contract R-1	142A8	1486 mm	no verified table
Trelleborg TM600	140A8/137B	1475 mm	2500 kg at 1.6 bar, 40 km/h
Vredestein Traxion 85 II	140A8/140B	1470 mm	2500 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: ≈ 16.9x30, ≈ 16.9R30