Here's one for the group.
I ran a set of racing slicks on my FR-S for two track days this summer. NO TPMS installed on the wheels. I swapped the rims at the track and it never triggered the TPMS light.
Last night I put the same rims on my car (this time with winter rubber) and on my way into work the TPMS light did come on.
Same rims, different tires, different results.
Crazy
