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Old 03-21-2012, 09:19 PM   #1
JaredV
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Default Close Shave?

So does anyone have their street autocross tires shaved? Any experience with it? Worth it?

Thanks for the help.
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Old 03-21-2012, 09:23 PM   #2
Dirty25RS
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Not worth it.

R-comps...worth it. If you're THAT serious. Less tread rubber = faster steering response, better transition and sometimes higher cornering power. Problem with R-comps is that it takes them too many heat cycles to get them worn down to and ideal amount of tread rubber, so you shave them.

Street tires, in theory, have infinite heat cycles so financially there is no point in shaving street tires. They will eventually get down to that ideal amount of rubber remaining on their own. Will you get better performance from shaving vs. full skid depth on street tires? Yes. Is it worth it? It depends on how much your money is worth to you in terms of tire life.

For me its not worth it.
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Old 03-21-2012, 09:37 PM   #3
Back Road Runner
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It's worth some wear on brand new tires to get a good contact patch for whatever camber setting you're running. Outside of that, I sort of see it as a mute point. Less can be better in terms of weight, loading, etc.
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Old 03-21-2012, 09:40 PM   #4
Scooby South
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ST National level Drivers have a optimum Tread depth that they use...for a competitive edge....when new the bigger/thicker blocks heat up and squirm...when they are shaved...less heat and less squirm... but that again, for National level drivers to get that edge or 2/10's of second...for the street...not worth it..
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Old 03-21-2012, 10:34 PM   #5
ButtDyno
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Yeah, for a street tire I think the heat thing is the biggest advantage. It's something that I'd consider for Nats but that is about it. The Dunlops are so good without shaving I haven't really felt it was necessary.

Quote:
Originally Posted by Back Road Runner View Post
Outside of that, I sort of see it as a mute point.
moot
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Old 03-22-2012, 12:33 AM   #6
tuskenraider
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Quote:
Originally Posted by Dirty25RS View Post
Not worth it.

R-comps...worth it. If you're THAT serious. Less tread rubber = faster steering response, better transition and sometimes higher cornering power. Problem with R-comps is that it takes them too many heat cycles to get them worn down to and ideal amount of tread rubber, so you shave them.
Really? Where have you witnessed this because I've never heard of anyone shaving their r-comps for autox either locally, for a Tour or Nationals. I can't imagine a Mini or ITR driver shaving a Hoosier A6 that might last them 20 runs before cording.........
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Old 03-22-2012, 08:54 AM   #7
Illini_STi
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Lots of info on ST tires here:
http://www.facebook.com/notes/hollis...45008598916447

More info on shaving here:
http://www.tirerack.com/tires/tirete....jsp?techid=67

The theory on shaving ST tires is that in some cases, the reduced tread squirm will reduce heat buildup and you can actually get more runs out of a shaved tire than a non-shaved tire. With Dunlops, which are the easy button suby tire, I don't know that it makes much difference. I've had both shaved and unshaved, and maybe for nats I will order with a light shave, but I'm not sure right now.

Oh yeah, and you are just burning money if you shave hoosiers. You want fresh A6's for the big events. Heck, Braun had 3 full fresh sets for SS last year.
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Old 03-22-2012, 10:39 AM   #8
russubaru
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THere is a thread on my region's forum about this. From what I gather, the reason for doing so is what Illini-STi said. You can potentially get more runs out of a properly shaved tire because tread "squirm" will cause the tires to heat up pre-maturely.
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Old 03-22-2012, 01:35 PM   #9
ComBIRDable
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Quote:
Originally Posted by russubaru View Post
THere is a thread on my region's forum about this. From what I gather, the reason for doing so is what Illini-STi said. You can potentially get more runs out of a properly shaved tire because tread "squirm" will cause the tires to heat up pre-maturely.
This is going to be tire dependent. General consensus is the Dunlop is fine without shaving. Bridgestones have a couple of compounds molded into the tread (UNI-T technology) where the tire gets softer the closer you are to the carcass. So shaving is probably a good idea there. Rumor has it some of the Toyos are softer on the outside and a little harder closer to the carcass, so shaving away the softer compound to get to the harder compound closer to the carcass might be a bad idea.

C/N: Your mileage may vary

Scott

Here is some great info on ST tires:
http://www.facebook.com/notes/hollis...45008598916447
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Old 03-22-2012, 02:02 PM   #10
russubaru
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Quote:
Originally Posted by ComBIRDable View Post
This is going to be tire dependent. General consensus is the Dunlop is fine without shaving. Bridgestones have a couple of compounds molded into the tread (UNI-T technology) where the tire gets softer the closer you are to the carcass. So shaving is probably a good idea there. Rumor has it some of the Toyos are softer on the outside and a little harder closer to the carcass, so shaving away the softer compound to get to the harder compound closer to the carcass might be a bad idea.

C/N: Your mileage may vary

Scott

Here is some great info on ST tires:
http://www.facebook.com/notes/hollis...45008598916447

ahh you must be referencing the famed 195 toyo made of unicorn dust
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Old 03-23-2012, 09:18 AM   #11
Evil STI
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I usually run 5/32"-6/32" shaved. Less chunking, better wear characteristics, saves ~2lbs per tire on a 245.
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