Another question

[bigtim]

sorry, I just got this thing a few weeks ago and questions keep on coming.

When I got the truck, it had these granny tires on there. I ripped them off and put 39.5 Swampers on it. Looks much better. But, the damn thing won't go over 60 without shaking you like crazy. At 60, it rides fairly smooth. At 61 starts getting bumpy. By 65 you don't want to drive it anymore.

Alas, my question...Is this just the nature of Swampers...Or, is this a bad balancing job?

With the old tires it would run 80 no problem.

Oh yeah, I am rnning in between 29 and 35 psi in the tires.