http://iremember.ru/en/memoirs/tankers/dmitriy-loza/ He goes into the Sherman's performance in some depth, and compares it with the Churchill and Matilda tanks the Russians were also equipped with.
Interestingly, he points out that because the Sherman had a very high centre of gravity, it was inclined to roll over when travelling along and traversing modest slopes and inclines. In fact, his rolled over simply by hitting a raised kerb stone.. I have such a grassy slope in my garden, and my Tigers (Mks 1 and 2) and T34 have no problems negotiating it. It's a different story with the Taigen Sherman M4A3, however. Like it's full-size namesake,
it too rolls over when crossing mild inclines.... Luckily, though, it hasn't burst into flames yet :
