Growth potencial
The M4 was designed in 1941 for mass production from 1942, For the time it was a very good design, bein meant to face the PzKfwIII. The tank also had clear growth potencial, as demonstrated by 50s/60s israeli models. What was missing was a serious developemnt to take the tank to the next level. The major flaws were corrected (better fire prevention, new suspension, etc) but when the M4 got a bigger turret for the 76mm it could have been upgunned with the 90mm gun, at the time being fitted in the T25 and T26 prototypes. That would have been a US equivalent tothe T34/85, and would have made life for allied tankers a lot easier. The israeli M51, with the 105mm gun gives a good idea of the M4 ultimate potencial.
The M4 was designed in 1941 for mass production from 1942, For the time it was a very good design, bein meant to face the PzKfwIII. The tank also had clear growth potencial, as demonstrated by 50s/60s israeli models. What was missing was a serious developemnt to take the tank to the next level. The major flaws were corrected (better fire prevention, new suspension, etc) but when the M4 got a bigger turret for the 76mm it could have been upgunned with the 90mm gun, at the time being fitted in the T25 and T26 prototypes. That would have been a US equivalent tothe T34/85, and would have made life for allied tankers a lot easier. The israeli M51, with the 105mm gun gives a good idea of the M4 ultimate potencial.