I have had a problem for a year now that seems very similar to yours yet I have the same size tires front and rear.
Whenever I come to a slow stop the abs cycles and I can feel it in the pedal as well as hear it cycling under the dash. No ABS light comes on though. So I dont think there would be an error code.
I purchased a new front sensor an have yet to swap them out. I thought about disconecting it altogether.
I hope to get around to troubleshooting some day but if you figure it out or if anyone has any ideas then please share.
Thanks,
