Well Greg... another member here with no advice on the tire. Just want to welcome you to TrikeTalk from west Texas!
I have a 2008 GL1800 Motor Trike Adventure kit. I have the BT45 on front in forward position, pressured to 38-39#. Not having any wear problems.
Have patience, its the holidays, but I’m sure you’ll get some feedback on this. These guys are good at trouble-shooting and tires are one of their favorite topics! :Santa:
"[FONT="]Cupping, which is more accurately described as [/FONT]scalloping [FONT="](see pictures, but we will use the more common term "cupping" here), is a natural wear pattern on motorcycle tires and it will always follow the tread pattern. It is not a sign that you have bad suspension parts. It merely shows that your tire is indeed gripping the road when you make turns (thank you for that Mr. Tire!). "
From my own experience, with a trike, running 41psi that someone, somewhere, posted a long time ago and most everyone followed suit, was a big contributor to my B45, reverse mounted tire cuppinng badly, along with a harsh front end! Next tire was run at 36psi w/no cupping and a much smoother front end!
Welcome to the forum from western Pennsylvania I'm sure someone will have a fix for you....
Tire pressure seems to be a major factor in tire wear and riding styles. Aggressive speed in turns accompanied by wrong air pressure could contribute to short tire life. Just sayin good luck with the tire issue. Merry Christmas Fred
As for the cupping ... I've always run 40 psi on the front wheel on the GL1800 as a two wheeler, On the trike, I let it go lower to 36 psi and seemed to be better.
Wheel balance and steering head wear/wobble can also contribute to the problem.
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