Bald Street tires on track

neilvosko · 10-03-2012, 08:42 PM

Hi all, sorry for silly question, but has anyone used worn street tires, balding on the track after replacing them?

basically throwing them on new rims for track use only?

jlcolon2001 · 10-03-2012, 09:00 PM

Put your flame suit on!

neilvosko · 10-03-2012, 09:06 PM

huh

will.c · 10-03-2012, 11:47 PM

I see couple issues off top of my head:
1) Street tires will still be street tires; low grip and screech around everywhere.
2) Bald tires = low heat sink capacity; they will overheat very quickly, and will have past the prime of their lives. It'll be tough to keep them in their optimal temperatures for a predictable handling.
3) More susceptible to damages from longer period of wear and tear that they've gone through.
4) If it rains, pretty screwed. And if you can afford a second set for wet, then why not just use those for dry also since most UHP or EP tires that are great on wet are also great on dry.
5) I don't think you'll pass tech inspection, since this is re: safety.

If you're talking about moderately bald, like 3/32 or something, you can prob churn out another day or two. But if completely bald, prob not the best idea.

CJ421 · 10-03-2012, 11:57 PM

The compound used in R 'slick' tires is different than street tires so this won't work out like you might think. I think wonho brings up some even better points why to not do this.

3002 tii · 10-04-2012, 08:57 AM

You wouldn't even pass tech so its moot.

raceyBMW · 10-04-2012, 09:50 AM

Low tread in the center block isn't necessarily that terrible and you can probably get away with it as long as it doesn't rain, but if you have a lot of shoulder wear, I wouldn't run them.

If the front are very worn on the shoulders, then you will probably cord during your day if you push the car, and then have to stop...I found this out the hard way unfortunately.

10-03-2012, 08:42 PM	#1
neilvosko Lieutenant Colonel 89 Rep 1,529 Posts Drives: 335i e92 FBO Join Date: Dec 2011 Location: miami iTrader: (19)	Bald Street tires on track Hi all, sorry for silly question, but has anyone used worn street tires, balding on the track after replacing them? basically throwing them on new rims for track use only?
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10-03-2012, 09:00 PM	#2
jlcolon2001 Second Lieutenant 23 Rep 225 Posts Drives: 335i Coupe 2007 Join Date: May 2011 Location: Puerto Rico iTrader: (0)	Put your flame suit on!
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10-03-2012, 09:06 PM	#3
neilvosko Lieutenant Colonel 89 Rep 1,529 Posts Drives: 335i e92 FBO Join Date: Dec 2011 Location: miami iTrader: (19)	huh
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10-03-2012, 11:47 PM	#4
will.c Captain 128 Rep 638 Posts Drives: E46M Join Date: Mar 2011 Location: Central Jersey iTrader: (5)	I see couple issues off top of my head: 1) Street tires will still be street tires; low grip and screech around everywhere. 2) Bald tires = low heat sink capacity; they will overheat very quickly, and will have past the prime of their lives. It'll be tough to keep them in their optimal temperatures for a predictable handling. 3) More susceptible to damages from longer period of wear and tear that they've gone through. 4) If it rains, pretty screwed. And if you can afford a second set for wet, then why not just use those for dry also since most UHP or EP tires that are great on wet are also great on dry. 5) I don't think you'll pass tech inspection, since this is re: safety. If you're talking about moderately bald, like 3/32 or something, you can prob churn out another day or two. But if completely bald, prob not the best idea.
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10-03-2012, 11:57 PM	#5
CJ421 Brigadier General 1552 Rep 4,109 Posts Drives: BMW M3 Join Date: Feb 2011 Location: Blue Bell, PA iTrader: (1) Garage List 2024 BMW M3 Sedan [9.50]	The compound used in R 'slick' tires is different than street tires so this won't work out like you might think. I think wonho brings up some even better points why to not do this. __________________ 2024 BMW M3 Sedan Frozen Pure Grey II/Fjord Blue, 6MT Past: 2021 Z4 M40i Frozen Grey II/Black Alcantara \| 2017 F30 340i Mineral Gray/Coral Red, 6MT \| 2011 E92 335i Le Mans Blue/Black, 6MT
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10-04-2012, 08:57 AM	#6
3002 tii Lieutenant General 2282 Rep 12,565 Posts Drives: Z4 M, X5, GX460 Join Date: Apr 2008 Location: CT iTrader: (99) Garage List F15 X5 xDrive35i [8.75] E86 Z4 M [10.00] F10 550i (Retired) [9.17] F25 X3 xDrive35i (R ... [9.43] E82 135is (Retired) [9.50] E85 Z4 M (Retired) [9.41] E90 328i xDrive (Re ... [9.25] E86 Z4 3.0si (Retired) [9.24]	You wouldn't even pass tech so its moot. __________________ Follow for latest mods
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10-04-2012, 09:50 AM	#7
raceyBMW king of the hills 92 Rep 2,915 Posts Drives: 2011 M3 w/ESS55, 2001 540i/6 Join Date: Dec 2006 Location: Arvada, CO iTrader: (1) Garage List 2001 BMW 540i/6 [8.17] 1994 530i [9.00] 2007 335i Coupe [8.37]	Low tread in the center block isn't necessarily that terrible and you can probably get away with it as long as it doesn't rain, but if you have a lot of shoulder wear, I wouldn't run them. If the front are very worn on the shoulders, then you will probably cord during your day if you push the car, and then have to stop...I found this out the hard way unfortunately.
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