Would a 2" lift and 1/2" tire size increase effect power for towing?

Would it? Towing a boat up steep hills

 

Make it worse. Not sure by how much, but you will push more wind, and have heavier tires.

 

I only tow every so often. Which is worse the slight lift or the 1/2" tire size increase?

 

Neither will make too much of a difference. Unless you go to much heavier tires than you have now.

 

I went up to e rated ko2's at 53 lbs each. I notice it takes a slightly higher rpm to keep the truck at speed over the oem tires (which were 37 lbs). I'm sure it'll affect towing feel and power up steep hills, but in etc and s4 mode, you'll prob be fine with a small boat.

 

I doubt you'll notice with such a small change.

Tire weight and diameter will have the biggest impact.

 

This thread seems familiar.