Tire Cupping and Camber? Yokohama S-Drives - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

adjusts · 07-13-2016, 06:51 PM

Hey all,

I'm currently running -5 deg neg camber in the front and -4 deg neg camber in the rear. I am very well of the uneven tread wear that this setup might exhibit.

I've driven these tires from new to nearly 3k miles. Today, I dismounted all 4 tires to see what the wear pattern was like.

There seems to be slight cupping going on in the inner edge of the tire. My toe has been zeroed out since I mounted the tires, and I have heard multiple sources say that negative camber does not cause cupping. Anyone else experience this, particularly on Yokohama S.Drive tires? I'm not sure what route I should go to go about solving this.

I am on BC Racing Extreme low suspension, 10k spring rates front/rear. I am curious as to why there are already signs of cupping going on even though my tires and coils were new.

[IMG]

[/IMG]

ryoma · 07-13-2016, 06:56 PM

any type of cupping always leads me to think you have something worn with your suspension. even though you state that your coilovers are new, maybe the spring rate coupled with the dampening of the shocks are not optimal which would have caused the cupping. are you able to adjust your shock dampening, and if so have you done so and what are you current settings?

Mr.ac · 07-13-2016, 07:02 PM

5 and 4 degrees of camber? Why? Are you one of those stance looking people?
Anyway cupping is due to your toe settings.

chaoskaze · 07-13-2016, 07:04 PM

other then looking @ your tire..........I'm looking @ your rim & think.......wtf?

something is fukn wrong.

adjusts · 07-13-2016, 08:36 PM

Quote:

Originally Posted by chaoskaze

other then looking @ your tire..........I'm looking @ your rim & think.......wtf?

something is fukn wrong.

rims are old and were previously drift spares.

adjusts · 07-13-2016, 08:37 PM

Quote:

Originally Posted by Mr.ac

5 and 4 degrees of camber? Why? Are you one of those stance looking people?
Anyway cupping is due to your toe settings.

i need to in order to clear the fender (wheels are 5x114 and PCD 5x114 to 5x100 adapters only come as little as 11mm spacers). any more camber and ill rub.

adjusts · 07-13-2016, 08:39 PM

Quote:

Originally Posted by ryoma

any type of cupping always leads me to think you have something worn with your suspension. even though you state that your coilovers are new, maybe the spring rate coupled with the dampening of the shocks are not optimal which would have caused the cupping. are you able to adjust your shock dampening, and if so have you done so and what are you current settings?

i have 10k spring rates front/rear, and my dampening settings are 8 clicks starting from soft in the rear, and 12 clicks starting from soft in the front.

bc racing extreme lows. I just changed the dampening setup to what i stated earlier today after noticing the cupping. Other than that, are there advisable dampening settings to run with such spring rates for DD and street driving?

Mr.ac · 07-13-2016, 10:41 PM

Quote:

Originally Posted by adjusts

i need to in order to clear the fender (wheels are 5x114 and PCD 5x114 to 5x100 adapters only come as little as 11mm spacers). any more camber and ill rub.

Sell your wheels, get wheels with the right bolt pattern/offset. You shouldn't need spacers.
Problem solved. Tires will last longer, your ride would be better, you'll feel better and you won't have people point and laugh anymore.

swarb · 07-13-2016, 10:53 PM

@adjusts What wheel/tire size setup do you have? Most of your problem is from stretched tires and too much camber. People tell you camber won't cause cupping **under normal conditions, but are stretched tires and -5/-4 camber normal?

guybo · 07-14-2016, 06:24 AM

Try stiffening the dampers. Make them very stiff to prevent the spring oscillation that's making the cupping. With that much camber you're going to destroy those tires quick fast and in a hurry anyway. Toe out does a lot more tire damage than camber, but camber will eat tires too.

Another thing to try is to set a little toe in all around. Start with a small amount and work your way up. With that much camber your car already handles like shit, so what's the point in zeroing out the toe?

DM7 · 07-14-2016, 06:24 PM

Is the cupping happening on all four tires?

The cupping is likely being caused by toe out like guybo said.

A bump steer correction kit would fix the cupping in the front.
Your car looks very low; causing the angle of your steering rods to be wrong.
When you are on the brakes the incorrect angle of the steering rods will cause the front tires to toe out during braking and cause the cupping wear.

lee1rbc · 07-14-2016, 07:30 PM

Riding on the edge of the tires with a tweeked suspension prob just bouncing all over the place. Its not toe its too much camber with to tight of a suspension, your bouncing.

Maybe bring back the camber by .5 front and rear, raise the car 1/8th of an inch, soften the shocks as far as you can without bottoming out. Or buy tires in bulk

sIowbrz · 07-29-2016, 01:08 PM

dont worry yokohama s-drive is known to cup tires alot of people have that problem get it warranty do something else

sIowbrz · 07-29-2016, 01:09 PM

i had new coils new rims and new s-drive on my other car before and it start doing it after 500km never get s-drive

07-13-2016, 06:51 PM	#1
adjusts Senior Member Join Date: Mar 2016 Drives: 86 Location: usa Posts: 544 Thanks: 45 Thanked 171 Times in 104 Posts Mentioned: 5 Post(s) Tagged: 1 Thread(s)	Tire Cupping and Camber? Yokohama S-Drives Hey all, I'm currently running -5 deg neg camber in the front and -4 deg neg camber in the rear. I am very well of the uneven tread wear that this setup might exhibit. I've driven these tires from new to nearly 3k miles. Today, I dismounted all 4 tires to see what the wear pattern was like. There seems to be slight cupping going on in the inner edge of the tire. My toe has been zeroed out since I mounted the tires, and I have heard multiple sources say that negative camber does not cause cupping. Anyone else experience this, particularly on Yokohama S.Drive tires? I'm not sure what route I should go to go about solving this. I am on BC Racing Extreme low suspension, 10k spring rates front/rear. I am curious as to why there are already signs of cupping going on even though my tires and coils were new. [IMG][/IMG]

07-13-2016, 06:56 PM	#2
ryoma Senior Member Join Date: Mar 2015 Drives: 2015 Subaru BRZ Limited CWP Location: SoCal Posts: 1,561 Thanks: 34 Thanked 669 Times in 469 Posts Mentioned: 13 Post(s) Tagged: 0 Thread(s)	any type of cupping always leads me to think you have something worn with your suspension. even though you state that your coilovers are new, maybe the spring rate coupled with the dampening of the shocks are not optimal which would have caused the cupping. are you able to adjust your shock dampening, and if so have you done so and what are you current settings? __________________ My 2015 CWP BRZ Build

07-13-2016, 07:02 PM	#3
Mr.ac [insert cool phrase here] Join Date: Aug 2015 Drives: BRZ Premium Location: Central Coast CA Posts: 2,368 Thanks: 709 Thanked 1,559 Times in 930 Posts Mentioned: 30 Post(s) Tagged: 0 Thread(s)	5 and 4 degrees of camber? Why? Are you one of those stance looking people? Anyway cupping is due to your toe settings. __________________ New daily driver - Subaru BRZ Premium Weekend fun/track car - '91 MR2 Turbo Gen3 Old daily driver - '88 MR2 Supercharged

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07-13-2016, 07:04 PM	#4
chaoskaze The Fail Boat Join Date: Aug 2011 Drives: CWP S.B. Location: LasVegas Posts: 3,028 Thanks: 4,720 Thanked 1,294 Times in 874 Posts Mentioned: 19 Post(s) Tagged: 0 Thread(s)	other then looking @ your tire..........I'm looking @ your rim & think.......wtf? something is fukn wrong.

07-13-2016, 10:53 PM	#9
swarb Senior Member Join Date: Sep 2014 Drives: BRZ Location: Los Angeles Posts: 3,052 Thanks: 1,773 Thanked 2,451 Times in 1,271 Posts Mentioned: 79 Post(s) Tagged: 0 Thread(s)	@adjusts What wheel/tire size setup do you have? Most of your problem is from stretched tires and too much camber. People tell you camber won't cause cupping **under normal conditions, but are stretched tires and -5/-4 camber normal?

07-14-2016, 06:24 AM	#10
guybo Huge E85 fan! Join Date: May 2016 Drives: 2016 Scion FRS Location: Tampa, FL, USA Posts: 1,850 Thanks: 539 Thanked 1,010 Times in 605 Posts Mentioned: 32 Post(s) Tagged: 0 Thread(s)	Try stiffening the dampers. Make them very stiff to prevent the spring oscillation that's making the cupping. With that much camber you're going to destroy those tires quick fast and in a hurry anyway. Toe out does a lot more tire damage than camber, but camber will eat tires too. Another thing to try is to set a little toe in all around. Start with a small amount and work your way up. With that much camber your car already handles like shit, so what's the point in zeroing out the toe?

07-14-2016, 06:24 PM	#11
DM7 Senior Member Join Date: Jun 2013 Drives: '13 FR-S Argento Location: America's Hat Posts: 120 Thanks: 26 Thanked 110 Times in 60 Posts Mentioned: 4 Post(s) Tagged: 0 Thread(s)	Is the cupping happening on all four tires? The cupping is likely being caused by toe out like guybo said. A bump steer correction kit would fix the cupping in the front. Your car looks very low; causing the angle of your steering rods to be wrong. When you are on the brakes the incorrect angle of the steering rods will cause the front tires to toe out during braking and cause the cupping wear.

07-29-2016, 01:08 PM	#13
sIowbrz Member Join Date: Mar 2015 Drives: 2015 brz Location: markham Posts: 68 Thanks: 0 Thanked 11 Times in 7 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	dont worry yokohama s-drive is known to cup tires alot of people have that problem get it warranty do something else

07-29-2016, 01:09 PM	#14
sIowbrz Member Join Date: Mar 2015 Drives: 2015 brz Location: markham Posts: 68 Thanks: 0 Thanked 11 Times in 7 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	i had new coils new rims and new s-drive on my other car before and it start doing it after 500km never get s-drive

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