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      04-04-2013, 11:41 AM   #10
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bigjae1976's Avatar

Drives: 11 E90 M3 Individual
Join Date: Mar 2006
Location: Wichita, KS

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2004 BMW M3  [4.50]
2011 BMW E90 M3  [5.00]
2013 BMW 328i  [5.00]
I don't think tire temps are useful in the HPDE format.

If the main concern is tire life (aka how fast will I ruin my tires), I take tread depth readings before and after the event and then I take hot pressures after coming off track.

But why did you continue to run the rear temps lower throughout the day. I would have went with 34psi all around from the start. Maybe 34fr/33rr if you have MDM on or a twitchy right foot.

Originally Posted by admranger View Post
BTW: NASA's online magazine has a great article on tire temps and a downloadable spreadsheet that does some nice calcs to help you determine what to do to get the temps where they need to be. You might have to be a member to get it, but from what I've seen so far it is worth the cost of membership. Very nicely done.
Hmm...that would be awesome so I'm not showing up to the track guessing and then running the latter half of my sessions with NT01s being overinflated and somewhat more skittish. The Hankook RS3s really spoiled me. They did really well from 35psi - 42psi, very little difference in grip.
2015 F34 328iX GT Glacier Silver
2011 E90 M3 Monte Carlo Blue
2004 E46 M3 Imola Red