I did see 120+ on track with 1.8 bar 390bhp on a standard cooler. (silkolene pro s)
Wasnt happy with hitting them temps so fitted a new mocal 19 row cooler and the max i get is about 110.
...after say 6 laps
Never seen 115 on the road
....but my sensor is in the filter plate.
Around 85-90 on the road.