According to Goodyear's spec, the G177 11.00-20 tires are 43.7" tall. The Michelin XL 11.00-20 are 43.1" tall. Pics of the spec sheets here:
http://www.steelsoldiers.com/showth...20s-(dualed)&p=1814441&viewfull=1#post1814441
Going from the 9.00-20 NDTs to the Goodyear G177's, I noticed slower acceleration, a lower gear needed for some of the mountain canyons near me, and easier steering once I made a caster adjustment (was hard to control above 35 mph).
I do feel though that G177s on an empty deuce is almost too much rubber. I'm down to 25 PSI in all 8 rear tires, and I don't have full tread contact. I do like the tires though, and even put a pair on my M105 so the deuce spare is still a spare for all tires on the ground. However, an empty M105 is even worse, those tires are down to 20 PSI and don't have full tread contact. One factor of the upgrade is that I still wanted my spare tire in the stock location. Tires bigger than the Goodyear G177's require some modifications to fit, which I didn't want to do.
Oh, also, the G177s on the center axle rub on the trunnion cap & bolt. Your experience may be different, I put a 1/4" spacer plate in, but the left side of the center axle still rubs because of tight turns on pavement.
One fellow put Michelin XL 14.5R20 super singles on the front, and Michelin XL 11.00R20 on the rear to maintain the duals. Looked real sharp! Hard/expensive tires to find though, and I've not been impressed with the sidewall life of the Michelin XL 11.00R20's. In my opinion, they seem to crack and rot easier/sooner than the Goodyear G177s.
You can read about (and see many pictures of) my whole upgrade experience (from 9.00-20 NDTs to the G177s) here:
http://www.steelsoldiers.com/showth...ce-s-tires-to-Goodyear-G177-11-00R20s-(dualed)
I know there are pics on the site and the trucks look awesome!