Re: Kumho tire pressures

[tteazis@xxxxxxxxxxxxx]

The only way to determine proper tire pressures and alignment is to use a
pyrometer (preferably the needle type). Immediately, after your last hot lap,
and preferably before your cool down lap, take the tire contact patch
temperatures on each tire at the following locations: one inch from the inner
edge, center and one inch from the outer edge.

If each tire temps are within 5 degrees F, then the tire pressure and alignment
is perfect. This is the BEST traction situation.
If the middle temp is the highest, the tire is over-inflated.
If the middle temp is the lowest, the tire is under-inflated.
If the temps get higher, in a linear fashion, from the inside tire edge to the
outside, tire pressure is OK but you have too little camber.
If the temps get lower, in a linear fashion, from the inside tire edge to the
outside, tire pressure is OK but you have too much camber.

You can also determine which tire gets the most abuse, i.e. has the hottest
temps, and rotate it accordingly.
Pyrometers are a GREAT investment for under $200...

Take care,
Theo.
'97 M3 (46 HS)

------------------------------