I tow with an F250 and am always concerned/watch the weight capacity of the tires. I see the folks referring to the weight ratings of the F350. What kind of tires/weight ratings do the SRW 350's h...
If your friend used the same OEM wheels, I wonder how much it was due to improper sizing. I'm guessing he went up in both diameter and width, which may be the reason for poor handling.
Not saying it's impossible for a particular D-rated tire to bounce more, just haven't seen that myself.