Hy Andy4802, Canadian Chevrolet Maple Leaf trucks are 2 1/2 ton and 3 ton, if you could post your trucks serial number I could tell you what you have. That said I think that 7.50 and 8.25 can be mounted to the same width of wheel. The only caution is what 69Cuda mentioned clearance between the tires when installed, hope that helps.
