Comments on tires, pls. - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

CB750F · 10-31-2023, 06:41 PM

Anybody see this before with their tires?

These cracks looks unsafe!

4,000km, with 10 autocross sessions.
Manufactured in '21, bought in '22, mounted in spring '23. Falken RT660.

Tks.

Gearhead23 · 10-31-2023, 07:00 PM

Dunlop's ? ZII ??

CB750F · 10-31-2023, 07:03 PM

Falken... I added it.

RT-BRZ · 10-31-2023, 08:01 PM

Very common and never been a problem so far.

villainous_frx · 10-31-2023, 08:53 PM

Pretty commonly reported problem with RT660 on autox and track Spacebook groups. Falken is aware and has said it isn't an issue. Still not great to see, especially with how much tires cost these days :/

CB750F · 11-01-2023, 02:07 PM

Tks guys, I'll google some more, I sent Falken an email, guess I'll get what you guys just said.

Edit 2 mins later... Grassroots Motorsport has a shit load of hits on this... Miata & Ford forums too...

Guess it's like Subaru's that drink oil or DI ICE that add gas to oil... a feature.

RT-BRZ · 11-01-2023, 02:30 PM

Quote:

Originally Posted by CB750F

Tks guys, I'll google some more, I sent Falken an email, guess I'll get what you guys just said.

Edit 2 mins later... Grassroots Motorsport has a shit load of hits on this... Miata & Ford forums too...

Guess it's like Subaru's that drink oil or DI ICE that add gas to oil... a feature.

I wouldn't sweat it too much. As you wear the tires the cracks/lines do go away.

cmiovino · 11-01-2023, 10:44 PM

RT660's.... yep, checks out, all ok. This is normal.

Crazy how that one is half blue. I'm used to only the edges getting blued sometimes on tires with a bunch of autox runs.

gnarjunkie · 11-02-2023, 12:43 PM

Yeah, mine did that. Same with a couple friends.

Mine also delaminated the inside edge though with almost half the tread still left

CSG Mike · 11-02-2023, 05:24 PM

Totally expected for RT660. Keep an eye on it, but okay to drive on.

CB750F · 11-06-2023, 03:37 PM

Tks guys!

I had a great season this yr, was 5 secs away from the top guys the last few yrs. This yr, 2.5 secs off pace.
Really enjoyed these tires.

10-31-2023, 06:41 PM	#1
CB750F Senior Member Join Date: Dec 2014 Drives: 2015 BRZ WRB Location: Great White North Posts: 141 Thanks: 18 Thanked 109 Times in 55 Posts Mentioned: 0 Post(s)	Comments on tires, pls. Anybody see this before with their tires? These cracks looks unsafe! 4,000km, with 10 autocross sessions. Manufactured in '21, bought in '22, mounted in spring '23. Falken RT660. Tks. Attached Images Last edited by CB750F; 10-31-2023 at 07:04 PM.

10-31-2023, 08:53 PM	#5
villainous_frx Off to the track! Join Date: Mar 2020 Drives: '14 Lava 86, '13 WRB BRZ Location: Canada Posts: 741 Thanks: 1,862 Thanked 1,259 Times in 499 Posts Mentioned: 12 Post(s)	Pretty commonly reported problem with RT660 on autox and track Spacebook groups. Falken is aware and has said it isn't an issue. Still not great to see, especially with how much tires cost these days :/ __________________ ZN6 \| Instagram \| ZC6

11-01-2023, 10:44 PM	#8
cmiovino Senior Member Join Date: Aug 2020 Drives: 2017 BRZ PP, 2004 WRX Location: Pittsburgh Posts: 484 Thanks: 40 Thanked 356 Times in 219 Posts Mentioned: 8 Post(s)	RT660's.... yep, checks out, all ok. This is normal. Crazy how that one is half blue. I'm used to only the edges getting blued sometimes on tires with a bunch of autox runs. __________________ 2017 BRZ Limited Performance Pack - Steel Cities Region SCCA / North Hills Sports Car Club

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10-31-2023, 07:03 PM	#3
CB750F Senior Member Join Date: Dec 2014 Drives: 2015 BRZ WRB Location: Great White North Posts: 141 Thanks: 18 Thanked 109 Times in 55 Posts Mentioned: 0 Post(s)	Falken... I added it.

10-31-2023, 08:01 PM	#4
RT-BRZ Senior Member Join Date: Jan 2021 Drives: 2013 Subaru BRZ Location: Columbus, OH Posts: 481 Thanks: 597 Thanked 308 Times in 189 Posts Mentioned: 5 Post(s)	Very common and never been a problem so far.

11-01-2023, 02:07 PM	#6
CB750F Senior Member Join Date: Dec 2014 Drives: 2015 BRZ WRB Location: Great White North Posts: 141 Thanks: 18 Thanked 109 Times in 55 Posts Mentioned: 0 Post(s)	Tks guys, I'll google some more, I sent Falken an email, guess I'll get what you guys just said. Edit 2 mins later... Grassroots Motorsport has a shit load of hits on this... Miata & Ford forums too... Guess it's like Subaru's that drink oil or DI ICE that add gas to oil... a feature.

11-02-2023, 12:43 PM	#9
gnarjunkie Member Join Date: Oct 2022 Drives: '23 GR86, '17 BRZ Location: Colorado Posts: 92 Thanks: 2 Thanked 60 Times in 34 Posts Mentioned: 2 Post(s)	Yeah, mine did that. Same with a couple friends. Mine also delaminated the inside edge though with almost half the tread still left

11-02-2023, 05:24 PM	#10
CSG Mike Join Date: Jul 2012 Drives: S2000 CR Location: Orange County Posts: 14,564 Thanks: 8,942 Thanked 14,213 Times in 6,856 Posts Mentioned: 970 Post(s)	Totally expected for RT660. Keep an eye on it, but okay to drive on.

11-06-2023, 03:37 PM	#11
CB750F Senior Member Join Date: Dec 2014 Drives: 2015 BRZ WRB Location: Great White North Posts: 141 Thanks: 18 Thanked 109 Times in 55 Posts Mentioned: 0 Post(s)	Tks guys! I had a great season this yr, was 5 secs away from the top guys the last few yrs. This yr, 2.5 secs off pace. Really enjoyed these tires.

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