Rather bulldozer.
The biggest semi-trucks are using is 22.5

 

I had my SL to 140 mph. It will go faster.

My Corvette limiter is set at 178 mph, I think. If not, it's very close to that. My memory is weak for that number.

 

I live in southern california..
in palmdale.

it is the high desert.

i have miles and miles of desert open roads here that i can do high speeds on..
iwas doing 130 mph on the way home today., wednesday....i couldn't safely go faster becuase i had about a 40 knot cross wind.

kevin