Drag Radials vs Street Tires! video
02-18-2008, 12:30 PM
#26
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With all due respect, this is my fourth set of DR's on various cars, and each responds differently.
I have run as low as 15 PSI and as high as 34 PSI in testing. I am merely sharing what has worked for me in the last hundred passes or so.
FWIW, there must be some sort of buried torque management software that limits power when both gas and brake are applied. Without removing that and possibly adding a converter, there is no point in leaving higher. (especially in a car than makes 90% of its torque just off-idle)
I have run as low as 15 PSI and as high as 34 PSI in testing. I am merely sharing what has worked for me in the last hundred passes or so.
FWIW, there must be some sort of buried torque management software that limits power when both gas and brake are applied. Without removing that and possibly adding a converter, there is no point in leaving higher. (especially in a car than makes 90% of its torque just off-idle)
i also agree that we're limited by tq management because d/r's only give me consistency. my best 60' times are nearly identical on 16" d/r's compared to 19" street tires but they're much more repeatable on the d/r's.
Last edited by chiromikey; 02-18-2008 at 12:34 PM.
02-18-2008, 12:34 PM
#27
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W211 E55
So I stand humbled.. I thought you were running a little less than standard tire pressure and did not bother testing out anything lower.. And 1/2 a second off your 60ft is nothing to sneeze at!! Generally speaking a .5 second drop in the 60 is worth 1 second up top in ET..
02-18-2008, 12:38 PM
#28
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28psi with a burnout puts your hot pressure at over 30lbs. You're at almost twice the manufacturer recommended pressure- not that it seems to be hurting you!
http://www.tirerack.com/tires/tires....+Drag+Radial+2
"It is also important to remember that the Drag Radial operates most efficiently on the strip at cold inflation pressures of between 15psi and 20psi (in no case should below 12psi be used)."
http://www.tirerack.com/tires/tires....+Drag+Radial+2
"It is also important to remember that the Drag Radial operates most efficiently on the strip at cold inflation pressures of between 15psi and 20psi (in no case should below 12psi be used)."
02-18-2008, 12:44 PM
#29
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2003 S-600
