I think making the track width wider also affects turning radius. Need more space for u-turns! But it is worth the looks.
As for the trd pro wandering on the highway, it could be because the rim is so narrow for the size of the tire. Someone mentioned there was a difference in ride quality and stability with a wider rim. Not sure the science behind that though.
As for the trd pro wandering on the highway, it could be because the rim is so narrow for the size of the tire. Someone mentioned there was a difference in ride quality and stability with a wider rim. Not sure the science behind that though.