Hello,
New to the site. Nice job web guru(s). Mr. Roo's photos got me hooked. I am currently researching the subject vehicle and noticed, during my four kits of this vehicle that even though these are all Italeri kits # 233 and 778, kit #233 has much smaller tires and a different rim pattern. Can anyone tell me the correct size? Or any information as to why this is...again, thanks for the site.

There were a few different tyre sizes used on CMP trucks. Just from my limited references gun tractors (CGT & FGT) used 10.5 - 20, light trucks (8 - 15 cwt) used 9.25 or 9.0 - 16, 30cwt used 10.5-16 and 3-tonners used 10.5-20. This wasn't 'hard and fast' as specialist vehicles such as tow trucks often used larger tyres than others in their class.
Tyre sizes above are quoted from "Historic Military Vehicles Directory" by Bart Vanderveen.
As most of my subjects are conversions from the kit no.240 CMP CGT I have to choose my subjects carefully!

Kit No. 240 by what manufacturer? Is that the Tamiya kit? Just curious. FGT/CGT? To what do those acronyms translate? Ford/Chevy Gun Tractors? I am attempting to look for as many variations as I can find on the Italeri kits and realize that, like so many allied vehicle's variations these vehicles were very abundant throughout WWII.
There is the new knowledge that the Cab 13 is only one type for that chassis and Ford and Cheverolet both produced them. Clever rascals all!!! MrRoo has thrown me into a tailspin, sorry about the skeet target colloquialisms.
I find the variations in themselves, facinating. Of course, you have just made me realize I have not even been considering the Tamiya Gun Tractor. Now I will look for it as well. More fun researching. I, for one, am glad there is no end to projects and the quest for more information. And what a boon the internet is for finding all types of help, and from across the puddles anywhere a computer can be found. Hmmm, does this mean, like I hear technologist say, we are heading toward a more international community???? I guess it could be said then, kit modeling is playing a part in this movement....
I mean, what chance would I have of coming across a fellow modeler on the streets of Houston, Texas that not only may have served the country that my project is for, but has seen and photographed actual vehicular images in his country's community museums and is willing to share the information? Or, if really lucky, may have even driven this vehicle or even have one as a 1:1 military vehicle collector... Is the book you mentioned "Historic Military Vehicles Directory" by Bart Vanderveen still available in print?
Sorry, the soapbox loomed too high to clamber from....
Again, thanks for the help...

Kit240 is the Italeri Chevy Gun Tractor (CGT). as you worked out FGT is Ford Gun Tractor. There were differing cab styles but the forward sloping 'screen type ( I think this is the no13) is the most distinctive. I have seven different CMP models at present with another waiting in the box, and haven't even scratched the surface of the multitude of possible combinations of cab and body. You can also use the cab of the Tamiya LRDG Chevy with a new cab back and roof to provide even more possibilities!. Ouch, brain overload, must go and lie down for a bit LOL
"Historic Military Vehicles Directory" by Bart Vanderveen is I believe out of print at present - my copy came from a guy that I built some stuff for and he never wanted it back!

OK! Dave is right the forward sloping screen on the Italeri kits is the Cab 13. Both Ford and Chev made them and Dodge also made a prototype that never went ahead. The Tamiya Quad kit is the earlier cab 12 shape. You have to watch this kit as it has major inaccuracies in the forward cab area especially. The earliest cab type is the cab 11 which had minor differences to the cab 12 so the Tamiya front panels can be altered to do this one.

There are endless varieties to make, especially of the cab 13 (Italeri's kits) as the British, Canadians, South Africans, Australians and New Zealand Armies had different rear body patterns and set ups on the same basic chassis.

Some you do have to be careful with as some body styles and uses were only made by Ford, others only by Chev. There were even 6X4 (Ford only) and 6X6 (Chev only) trucks.

so this is a very interesting area and also as Dave has said the Tamiya LRDG Chev opens up anther large range of types and styles.

the book sadly is OOP and is well worth purchasing if a copy becomes availiable.

for heaps of photos on these go to the Armorama gallery click on Armor then reference then Roos' truck Archieve and enjoy!