When to replace street tires used for the track? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

ayau · 07-22-2013, 11:17 AM

Here's a pic for reference of my current Direzza II tires.

They're at the wear bars right now. I won't be driving them in the rain. Can I still drive these at the track without worrying about the safety of the tires? Obviously maximum grip isn't a concern if I'm driving them this low.

Deep Six · 07-22-2013, 07:18 PM

You may have some life left in them unlike these.....

GTB/ZR-1 · 07-22-2013, 07:26 PM

For dry track?

As long as cord isn't showing & reading on one of these is good as well:

defylogik · 07-23-2013, 09:11 AM

Generally what we do - run them until you can see cords, or they stop providing grip. With a street tire, you will see cord before you lose grip.

As soon as you see cord, they are done. Don't go further... steel belts do not grip

Keep in mind, always have enough tire for an event. Running out of tire can be expensive if you have to scrap sessions halfway through the day.

CSG Mike · 07-23-2013, 11:45 AM

Run em till they cord. If you know they're going to cord at your next event, replace them.

Keep in mind grip will drop throughout the tire's life as you heat cycle them with hard driving. Also, it's not legal to drive with balding tires (at least in California), so that's a consideration as well.

07-22-2013, 11:17 AM	#1
ayau Senior Member Join Date: Nov 2011 Drives: Some rust bucket Location: Polar ice cap Posts: 3,058 Thanks: 312 Thanked 1,045 Times in 556 Posts Mentioned: 37 Post(s) Tagged: 0 Thread(s)	When to replace street tires used for the track? Here's a pic for reference of my current Direzza II tires. They're at the wear bars right now. I won't be driving them in the rain. Can I still drive these at the track without worrying about the safety of the tires? Obviously maximum grip isn't a concern if I'm driving them this low.

07-22-2013, 07:18 PM	#2
Deep Six Senior Member Join Date: May 2013 Drives: 2013 FRS / 2013 427 Vert Location: Orlando Posts: 611 Thanks: 212 Thanked 328 Times in 197 Posts Mentioned: 5 Post(s) Tagged: 0 Thread(s)	You may have some life left in them unlike these..... __________________ [SIGPIC][/SIGPIC] 2013 FR-S Asphalt BC Coils/Rev Works UEL header/HKS Front Pipe/Racing Brake BBK/Shorai LW Battery/ACT 6 Puck Clutch/FBM Radiator & Oil Pan/JR Oil Cooler/Jackson Racing High Boost C30/Rev Works Built Motor 2016 Audi TTS APR Tuned

07-22-2013, 07:26 PM	#3
GTB/ZR-1 Senior Member Join Date: Oct 2012 Drives: '13 BRZ in WRB--let's mod!!! Location: Central, FL Posts: 1,224 Thanks: 317 Thanked 449 Times in 262 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	For dry track? As long as cord isn't showing & reading on one of these is good as well: __________________ * ‘23 Corolla GR—AutoX/DE toy * '13 Toyobaru P&L Turbo WRB BRZ SCCA XS-A build starting. SOLD * '22 Z51 Vette--sold. * '09 Nissan GT-R--gone, but not forgotten... 10.63 @ 131+ on streeties. * '90 ZR-1 11.0 @ 130.2 & 11.2 @ 132.4 sprayed 120 shot.

07-23-2013, 09:11 AM	#4
defylogik Track Junkie Join Date: Jul 2013 Drives: White FR-S Location: NoVa Posts: 38 Thanks: 0 Thanked 7 Times in 5 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Generally what we do - run them until you can see cords, or they stop providing grip. With a street tire, you will see cord before you lose grip. As soon as you see cord, they are done. Don't go further... steel belts do not grip Keep in mind, always have enough tire for an event. Running out of tire can be expensive if you have to scrap sessions halfway through the day. __________________

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
18" tires for street/track use? .. OR stick w/17"	random hero	Tracking / Autocross / HPDE / Drifting	36	06-20-2015 09:30 PM
Megan Racing Coilovers - Street / Track / EZ STREET - Starting at $699 Shipped	GuerillaRacing	Brakes, Suspension, Chassis	149	05-12-2015 05:53 PM
T1R B52 Street and Track Coilover Review	jau	Suspension \| Chassis \| Brakes -- Sponsored by 949 Racing	27	09-08-2013 01:33 PM
Street to track	giraffee	Australia Classifieds	1	10-31-2012 02:03 AM
Different pads for street and track	Captain Snooze	Suspension \| Chassis \| Brakes -- Sponsored by 949 Racing	11	08-01-2012 02:55 PM

07-23-2013, 11:45 AM	#5
CSG Mike Join Date: Jul 2012 Drives: S2000 CR Location: Orange County Posts: 14,531 Thanks: 8,920 Thanked 14,177 Times in 6,835 Posts Mentioned: 966 Post(s) Tagged: 14 Thread(s)	Run em till they cord. If you know they're going to cord at your next event, replace them. Keep in mind grip will drop throughout the tire's life as you heat cycle them with hard driving. Also, it's not legal to drive with balding tires (at least in California), so that's a consideration as well.

User Name		Remember Me?
Password