TT organisers say course cars won’t be going around the Mountain Circuit before Friday's Lightweight race.
The laps by the Subarus have been called off after a crash earlier today at Sulby Bridge.
The sidecar race had to be put back 15 minutes after one of the cars went into air barriers, shortly before the race was due to get underway.
The car was extensively damaged, although no injuries have been reported.

Researching your Manx family history can be a very interesting and rewarding hobby. Trace your roots in the Isle of Man with our helpful of guide.