16:1 vs. 24:1 steering

16/24= .666

So you will have to apply 33% more effort to turn the wheel

16/20 = .8
So 20% more effort

20/24 = .83
So 17% more effort.

I can palm steer my 67 Dart stock 24:1 (273, 215/70R14 tires) in a parking lot (but just barely) most of the time it is hand over hand.

At over parking lot speeds there is no issue