View Single Post
Old 05-25-2008, 12:28 PM   #18 (permalink)
Legend in my own mind
trikkonceptz's Avatar
Join Date: Apr 2008
Location: Homestead, Fl.
Posts: 927

Evil Pumpkin - '08 Scion xD RS 1.0 #1633
90 day: 35.45 mpg (US)

Silent Silver Killer - '10 Honda Insight EX
90 day: 51.5 mpg (US)
Thanks: 2
Thanked 14 Times in 13 Posts
If the underlying argument here is contact patch why not test it. Take YOUR tire down to 36 psi or whatever, lift the car, roll some water based paint over the tread and drop the car on some heavy duty paper. Then re-inflate to YOUR max psi and repeat, then measure. If the patches are the same, case closed right? This should even show weight distribution by how much of the treads are printed on the paper, to see which treads are making contact and how much.

Once that is laid to rest the next question would be side wall flexing. Now you guys keep talking about air and it varying pressure with heat. What about Nitrofill? Which has a higher balance of nitrogen than air and claims to stabilize the heat expansion in tires. Which is why aircraft and NASCAR use it.
Thx NoCO2; "The biggest FE mod you can make is to adjust the nut behind the wheel"

I am a precisional instrument of speed and aeromatics
If your knees bent in the opposite direction......what would a chair look like???

  Reply With Quote