Sporadic ABS issue with tire diameters?

[LAP1DOUG]

My long awaited RE-71R tire sizes finally came in:

Front: 255/35 - 18 (25" O.D. at 833 revolutions/mile)
Rear: 285/30 - 18 (24.8" O.D. at 841 revolutions/mile)

I have run these same tire sizes and diameters in the past in a ZII tire with no issues, but this time was a bit weird.

First I drove around on the street about 20 miles to scrub them in. After that they threw an ABS code. However, after another 10 miles or so, and shutting off and restarting, the ABS code disappeared, and all seemed well.

The next day, driving to an auto-x event, all was still good with no codes. Then on my first run getting on the brakes the first time the ABS kicked in way early blowing my run completely. After that we did 7 more runs with no problem at all and the brakes were awesome.

However, I'm wondering if this problem may come back sporadically or not. Anyone else ever have an ABS problem like this?

Thanks for any info.

BTW, these Re-71R's are almost as good as a Hoosier - amazing.