First AutoX in my BRZ...lol tires - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

jeebus · 09-10-2012, 01:21 PM

Had my BRZ out for the SD BMWCCA AutoX this weekend at Qualcomm. The car is bone stock except for some crash bolts up front. I must say, the car was wonderful out there. Very balanced, power felt good, brakes felt good. Grip was....well grip was awful on the Prius tires, as expected. I was drifting most of the 1.2 mile, relatively high-speed course, all day long. The car did pretty well despite the grip issues. An FRS came out that day too, so it was fun comparing our car's differences.

Here's my rear tires after 8 runs. I had another 3 runs after this pic was taken.

gmookher · 09-10-2012, 01:46 PM

sold mine on ebay before i messed them up...

jeebus · 09-10-2012, 02:23 PM

Quote:

Originally Posted by gmookher

sold mine on ebay before i messed them up...

yeah, I'm stuck on this set for a bit. My wife gave me the "you aren't buying parts for this car immediately!"

celica73 · 09-10-2012, 02:25 PM

That must be one abrasive site. I lucked out, my first two events were on slick surfaces, so I had shitty grip but very little tire wear. I've since gotten some star specs and the stock ones are for road use. I really didn't want to have to buy autocross tires AND new street tires.

jeebus · 09-10-2012, 02:35 PM

Quote:

Originally Posted by celica73

That must be one abrasive site. I lucked out, my first two events were on slick surfaces, so I had shitty grip but very little tire wear. I've since gotten some star specs and the stock ones are for road use. I really didn't want to have to buy autocross tires AND new street tires.

yeah, the lot is very abrasive and getting pretty worn in areas. The speeds are high and the courses are large though.

Superhatch · 09-10-2012, 02:48 PM

Know what your tire pressure was for the runs? I've did two events on the stock tires and luckily didn't have that much wear. Both were slower courses though, with tighter more technical turns.

mechaghost · 09-10-2012, 02:51 PM

I've done probably a total of 40 runs with the stock tires and they don't look anywhere as bad as that

jeebus · 09-10-2012, 02:57 PM

Quote:

Originally Posted by Superhatch

Know what your tire pressure was for the runs? I've did two events on the stock tires and luckily didn't have that much wear. Both were slower courses though, with tighter more technical turns.

Around 35 hot.

Quote:

Originally Posted by mechaghost

I've done probably a total of 40 runs with the stock tires and they don't look anywhere as bad as that

Well, I was literally drifting almost the entire time. I wasn't really shooting for the fastest time. Still beat the FR-S by 6 seconds though.

ABQautoxer · 09-10-2012, 03:42 PM

Did you let them get very hot by not spraying between runs? That would go a long way to make them last longer and not chunk.

jeebus · 09-10-2012, 04:21 PM

Quote:

Originally Posted by ABQautoxer

Did you let them get very hot by not spraying between runs? That would go a long way to make them last longer and not chunk.

Oh should I do that?

ABQautoxer · 09-10-2012, 04:29 PM

Yeah depending on tire temps, too hot can make the damage a lot worse than it needs to be. Go make friends with the people that race in STU/STX/STR/STC in your area and ask for help judging when to spray water on the tires between runs to keep them in the operating temps and prevent this type of premature damage. Most people use a $10-25 garden sprayer from Lowes/Home Depot filled with just regular water.

UncleFester · 09-10-2012, 04:35 PM

Quote:

Originally Posted by ABQautoxer

Yeah depending on tire temps, too hot can make the damage a lot worse than it needs to be. Go make friends with the people that race in STU/STX/STR/STC in your area and ask for help judging when to spray water on the tires between runs to keep them in the operating temps and prevent this type of premature damage. Most people use a $10-25 garden sprayer from Lowes/Home Depot filled with just regular water.

I second this. I had to spray my tires at two events this summer. If you are serious, its worth getting an infared temperature gun or pyrometer as well.

jeebus · 09-10-2012, 05:59 PM

Quote:

Originally Posted by ABQautoxer

Yeah depending on tire temps, too hot can make the damage a lot worse than it needs to be. Go make friends with the people that race in STU/STX/STR/STC in your area and ask for help judging when to spray water on the tires between runs to keep them in the operating temps and prevent this type of premature damage. Most people use a $10-25 garden sprayer from Lowes/Home Depot filled with just regular water.

coolio. Will do next month at the next AutoX.

brz7400 · 09-10-2012, 08:22 PM

Those tires look chewed up for sure!!!
I ran 2 auto-x with 12 laps each and they barely showed much wear on the outer shoulder and even less on the insides.

09-10-2012, 01:21 PM	#1
jeebus Senior Member Join Date: Jul 2012 Drives: 2015 Mustang GT (on order) Location: San Diego Posts: 904 Thanks: 114 Thanked 471 Times in 208 Posts Mentioned: 9 Post(s) Tagged: 0 Thread(s)	First AutoX in my BRZ...lol tires Had my BRZ out for the SD BMWCCA AutoX this weekend at Qualcomm. The car is bone stock except for some crash bolts up front. I must say, the car was wonderful out there. Very balanced, power felt good, brakes felt good. Grip was....well grip was awful on the Prius tires, as expected. I was drifting most of the 1.2 mile, relatively high-speed course, all day long. The car did pretty well despite the grip issues. An FRS came out that day too, so it was fun comparing our car's differences. Here's my rear tires after 8 runs. I had another 3 runs after this pic was taken. __________________

09-10-2012, 02:48 PM	#6
Superhatch AIM4APX Join Date: Jun 2012 Drives: 2013 WRB BRZ Limited Location: Milwaukee Posts: 1,206 Thanks: 642 Thanked 749 Times in 324 Posts Mentioned: 8 Post(s) Tagged: 0 Thread(s)	Know what your tire pressure was for the runs? I've did two events on the stock tires and luckily didn't have that much wear. Both were slower courses though, with tighter more technical turns. __________________ "It's very difficult to present technology as an overtly positive sales device to people who want an emotional car" -Chris Harris

09-10-2012, 03:42 PM	#9
ABQautoxer Senior Member Join Date: Jun 2012 Drives: 2021 Supra / 2022 Tundra Location: Albuquerque, NM Posts: 659 Thanks: 60 Thanked 197 Times in 141 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	Did you let them get very hot by not spraying between runs? That would go a long way to make them last longer and not chunk. __________________ TomR

09-10-2012, 04:29 PM	#11
ABQautoxer Senior Member Join Date: Jun 2012 Drives: 2021 Supra / 2022 Tundra Location: Albuquerque, NM Posts: 659 Thanks: 60 Thanked 197 Times in 141 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	Yeah depending on tire temps, too hot can make the damage a lot worse than it needs to be. Go make friends with the people that race in STU/STX/STR/STC in your area and ask for help judging when to spray water on the tires between runs to keep them in the operating temps and prevent this type of premature damage. Most people use a $10-25 garden sprayer from Lowes/Home Depot filled with just regular water. __________________ TomR

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09-10-2012, 01:46 PM	#2
gmookher Banned Join Date: Aug 2012 Drives: VortechSC,BorlaEL,Perrin,GCRace Location: HighHeatHighAltitudeAZ,USA Posts: 2,254 Thanks: 458 Thanked 669 Times in 394 Posts Mentioned: 9 Post(s) Tagged: 2 Thread(s)	sold mine on ebay before i messed them up...

09-10-2012, 02:25 PM	#4
celica73 Senior Member Join Date: Jun 2012 Drives: '13 BRZ / '11 Outback / '06 Tundra Location: Durham NC Posts: 510 Thanks: 6 Thanked 155 Times in 104 Posts Mentioned: 4 Post(s) Tagged: 0 Thread(s)	That must be one abrasive site. I lucked out, my first two events were on slick surfaces, so I had shitty grip but very little tire wear. I've since gotten some star specs and the stock ones are for road use. I really didn't want to have to buy autocross tires AND new street tires.

09-10-2012, 02:51 PM	#7
mechaghost Senior Member Join Date: May 2012 Drives: Silver AT Limited Location: Seattle Posts: 823 Thanks: 145 Thanked 344 Times in 159 Posts Mentioned: 17 Post(s) Tagged: 0 Thread(s)	I've done probably a total of 40 runs with the stock tires and they don't look anywhere as bad as that

09-10-2012, 08:22 PM	#14
brz7400 Senior Member Join Date: Jun 2012 Drives: Subaru BRZ Location: Los Angeles, CA Posts: 138 Thanks: 84 Thanked 30 Times in 22 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Those tires look chewed up for sure!!! I ran 2 auto-x with 12 laps each and they barely showed much wear on the outer shoulder and even less on the insides.

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