my 58 2-ton has no issue going 60 or 70 down the road. The steering and brakes seem fine as well at that speed. I have almost new 9r-22.5 tires on it, I am assuming that may help a bit, and it also has a 327 in it. The engine is spinning 4200 RPM at 70 mph though. I am not sure the 235 would be happy doing that!