19's. Fresh alignment as of ~2 1/2 weeks ago. Really shows how the negative camber is affecting the rears, and see how nice and even the fronts are!
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Was this new tires _and_ fresh alignment? (have sound off while at work)
I have a FLIROne, I'll do this in the next few days too. I have 19's with Pirelli P7's (not great tires, good wear, poor dry traction, makes sliding fun) with a fresh alignment when I put them on
Very interesting. Is more heat on the inner rears expected given the negative camber? I'm not sure this necessarily indicates you'd have an excessive wear problem.
As I understand it, the Model S that have had poor rear tire life experienced excessive inner shoulder wear. From the looks of the tires with excessive rear wear, not much of the inner tread experienced the wear since it involved such a narrow part of the tire.
Since your tires have 15K miles on them, are you seeing inside rear shoulder wear?
Incidentally, I also have a FLIR One, and have found it extremely useful to locate specific areas where my home's walls and attic have poor insulation, as well as devices that were drawing excessive electrical power even when shut off. While not as capable as higher-end thermal imaging cameras, it's a lot cheaper. I'll check my Model S tires also.
Not sure if there was an improvement to the P85D alignment
Curious if your fabulous P85D has different alignment specs from the RWD S?
You can find it in your manual on the touchscreen.
do you need the steps to get to it?
if you need help, I will have to change out of my Winnie-The-Poo pj's (so the neighbors won't see) and go down to the car unless someone knows off the top of their head or is currently in their car.
....the inner edge that was warmer was actually the area where the tire doesn't even touch the road.
A significant amount of heat comes from the carcass flexing. Thats what's happening in this case--the inner edge of the tire flexes the most becuase of camber.
Simple rolling doesn't create much heat from friction. Scrubbing from the toe does a little bit, but friction heat comes mostly from cornering, acceleration, and braking,
So I got my thermal camera as well and I saw the same heat pattern on my rear tires. At first I jumped to the conclusion that my tires might be misaligned. But then I took the camera closer and saw that the inner edge that was warmer was actually the area where the tire doesn't even touch the road. So I think it can't be a misaligned tire.