If its getting to that temp in about 2/3 miles and stays there,then it is OK
Anything 80-90c is normal. Mine sits about dead on where your picture shows.
Yeah gets to that temp in about that and stays there . Before I changed both stat and CTS it used to go to bang on half and stay there hence the concern
90c should be when the thermostat opens up, mine rarely reaches 90c (which I think is 'halfway'!).
Yeah that is what I thought and I thought halfway was 90c