For example, from Firestones table C2, a VF750/65R26 (30" wide tire) would require 13.1 PSI at 9350 lbs. This is a much much narrower tire than an 1100, but only 1 psi higher pressure required than the LSW.
https://commercial.firestone.com/content/dam/bcs-sites/firestone/AG/load-inflation-tables/Mar2015/Load%20and%20Inflation%20-%20Table%20C2.pdf
For the rear tire, from table C, an IF850/75R42 would require 10.5 psi at 12300 lbs. Only a 33" wide tire. Narrower than the LSW, and lower required pressure. I didn't see a VF tire near this size in table C or C2. https://commercial.firestone.com/content/dam/bcs-sites/firestone/AG/load-inflation-tables/Mar2015/Load%20and%20Inflation%20-%20Table%20C.pdf Not sure if the OD of these tires works for you. Perhaps other companies (Firestone is not the only VF tire mfg) might have a taller VF tire that works for you, allowing an even narrower tire on the rear.
Edited by Crossflow 5/23/2019 07:43
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LSW vs Tracks for Planting?
