Let me first start off saying that there are 20 tires total, and I believe that's enough but I can't be for sure, because I am not an expert on these types of toys, everything else is pretty much sealed inside except for the tires. This is a Far West Trucking model kit us truck with reefer trailer. This model kit is a 1/24 scale number 709. This model kit is made by Italeri. This is definitely the only one that I have like this. Please make sure and take a look at all the pictures, and if you need more pictures, feel free to contact me. Thank you so much for looking and good luck.