38.5x14.50 sx's strong 4 banger and 5.29's. unless you are running a 3.4 go with the 5.29's.
my 37" mtr's do just fine on the highway, but the 38.5's are about twice as heavy and i can forget about 5th.
black truck is me
other truck has 35x15.50 boggers and 5.29's with a good motor. he actually needs the 5.29's to get where he is going.
mike
ps i hope this helps, you are only gonna want to do this once.