There really goofy looking but I can appreciate the time that went into fabricating them and I have to remember there "goofy looking" for a reason (the movie). I remember search Super Swamper on eBay a couple months back and there was a golf cart“ish” vehicle that was a miniature replica of the black one called Tumbler (sp?). Supposedly they used it to get around the set during the filming of the movie, that’s how I knew it had something to do with Batman. It had dually 27” Super Swampers TSL out black vs. the 44” on the real one you posted.
I did another google search and the black one and this is what wikipedia has to say
Technical specifications
Length: 15 feet (4.57 m)
Width: 9 feet 4 inches (2.84 m)
Weight: 2.5 short tons (2.3 t)
Acceleration: 0-60 in 5.6 seconds.
Engine: 5.7 liter GM V8 engine capable of 500 horsepower (370 kW).
Fuel: The "jet engine" on the back of the car was fed by propane tanks.
Tires: 4 Interco "Super Swamper TSL" tires standing 44 inches (1,100 mm) tall 18.5 inches (470 mm) wide (via titanium axles) in the rear and two 20" Hoosier dirt tires on the front
picture of the front Hoosier dirt tires
