Sporadic ABS issue with tire diameters?

[Topless]

I have run several different diameter tires on my 986 without issue. On the 987.2 tire diameters are critical to keep the PSM from overreacting.

I suspect the ABS problem is unrelated to those minor tire differences.

[LAP1DOUG]

Originally Posted by thstone

What ABS code was reported?

I don't have a code reader, so did not obtain any codes.

Originally Posted by Topless

I have run several different diameter tires on my 986 without issue. On the 987.2 tire diameters are critical to keep the PSM from overreacting.

I suspect the ABS problem is unrelated to those minor tire differences.

Yeah, I always heard the same thing about 987 PSM being sensitive to wheel diameters, but never heard anything like this with 986 ABS.

Anyway, the ABS issue went away, and has not come back in any street or auto-x situations since then. Heading to Barber in a few weeks for more "testing".

Thanks for responses.