How big of a tire with stock clutch?

2013 maverick xrs
Stock clutch
Sport low override will be installed
Question is how big of a tire can I go without losing performance Because of stock clutch?
Top end isn’t a factor much. I know I’ll lose some in it and that’s ok. I’m rarely over 50 mph. I just want good power to the ground. I mainly ride trails like hatfield mccoy so I’ll be in low most of the time. Specially will the low sport override.
Thinking 30’s would be nice but not sure how much of a loss I will have with them