So I measured my tires and they are about 3 1/2 tall with a 2" lockbead style rim- I went to the hobby store and they were guessing and didn't want to open the bag-But the guy said they were 1.9(?) he really didnt know- now I was reading 1.9 size is for 1/10 size trucks?? The Losi mini crawler manual says it's a 1/18 scale- man this is confusing- any help? I just need some cheap crawler tires the ones I have are shreaded any help with what size they are? or how I can better measure them- Thanks in advance