Outer Diameter: 2.4" (60mm)
Inner Diameter: 1.5" (39.5mm)
Width: 0.79" (20mm)
Should be pretty accurate...and there's room for them to be a little bigger. The outer diameter of the front tires is a few millimetres smaller, but the rims are identical so I'm sure it could handle the same size tires all around if need be.
Hmm, also from Tower Hobbies, the HPI Mini Touring Truck wheels & tires:
Tires: Licensed Yokohama Geolander 1.3" (34mm) wide, 3.7" (94mm)
diameter with foam inserts
Wheels: Matte chrome finish 1" (26mm) wide, 2.2" (54mm) diameter
So yeah, the tires are way too big. I have seen people put 1/10 scale touring car wheels on these Tamtechs but it looks really weird. I did see 1.5" beadlock wheels in various places but finding suitable tires will likely be the difficult part.
(Last edited by kirbenvost : 9.08.11 at 1:26 pm)