Originally Posted by Buzzer479

Thank you all for your inputs !
Here is why I had the question in the first place:
When I got the winter tires installed the screen read 39 when cold and up to 42 after an hour or so on the road. When the temp. dropped much lower it read 34 on cold and 39-40 on the road. I thought that that those numbers were a little high checked with my "compressor" it read 32 and 35 respectively. What would be most efficient and precise way to measure the tire pressure and what should we go for in terms on PSI ?

Thanks