mileage meter and larger tires
Hi, I have just gone from 225/75R16 to 235/85R16 tires (with new wheels) Will this throw off the miles per gallon calculation of the scangaugeII?
Forum Discussion
SteveAE wrote:
A couple dumb questions but here goes anyway:
- Can you really tell the difference in either ride or tire wear between 78 and 80 psi?
- How can you set a pressure this accurately when ambient temperature swings throughout the day (and from day to day) is likely to change the tire pressure by almost this amount alone?
Thanks in advance for the "education" I am sure to receive.
Steve
I cannot tell if all are at 80 or all are at 78, but it was really easy to tell on my C if they were all the same cold (meaning the inners had higher pressure hot) or the outsides were a little higher cold. I is the same as being able to tell a small toe in from a small toe out on tires when going around a corner in your car. It's the difference between stable and a big move toward conditionally stable.
You cannot. You just follow the rules about cold pressure being in the morning before the sun hits the tires and after many hours resting. You can measure at close to hot if you are quick (or have tire pressure sensors), but as soon as you add air to a hot tire, it is just warm.
Just my experience and discussions with some OEM guys here and there over the years. Treat it like any other free advice.
Jim
