Tires: It always seems to be a mystery in fitting mv tires. I have been through the M37 - CMP differences in the past but now am learning that there are similar variations in more modern tires. It seems there are 2 types of rims in use with regards to the bead area, the Industrial rims are most common but the MPT rims are around as well. I have attached pictures showing the difference. The narrower vertical bead lip is the MPT type, the wider one is the Industrial type. I may be wrong but from trying to digest many discussions on this, the MPT tire/rim assembly is designed to run at varying pressure while the Industrial setup is meant to run at a set, usually high, pressure.
The MPT tires often are odd sizes 12.5R20, 14.5R20 for example. Metric sizes are less obvious; 365/80R20 is the same as 14.5R20 I am told.
The RAM truck has MPT rims & hopefully the set of MPT 14.5R20s in the pickup will fit. They are about 3" larger in diameter & slightly narrower than the original 16.00X20s.
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