I had a 330mm (metal+leather fiber) deep dish wheel on my g29 and on my kid's g25. Before those I tried a 350mm deepdish which worked but I could tell it was stressing the motors so I stuck with the 330s.
Now, if youre drifting with it you need to throw the wheel but its completely do-able. The logitech motors just cant spin it fast enough alone but normal driving and racing seemed to be just fine.
EDIT: I also had some extended paddle shifters I welded so there was the added weight of that. Still did fine.
On my T300 which is reported to be stronger than the G25 a dished 350mm wheel made the FFB feel slow and muted.
So even when using H shift i drive with the Ferrari Alcantara wheel which is 50mm smaller and lighter.
The cars feel much more alive and the FFB has more detail.