So...been dealing with tires and tire posts for many years and have a plethora of experience with them. However I have a new challenge. Dealers seldom carry my tire in stock and they must be order...
As far as Discount Tire, they will not touch a 17.5 rim at my local store and the rep said they won't in my area....period. I questioned the fact they sell GY114 tires and he said, "yep, but don't install them". He said they will not install any tire that takes more than 90 psi....period. Very nice about it but very definitive.