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Old 11-06-2016, 11:13 AM   #1
Nighthawk89


 
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TC coming on with new R888'r

So, i just had my new R888r's installed on the rear of my ride and i noticed in some turns on the freeway depending on speed my TC will start to kick in? This never happened with my michelin PSS? Any ideas as to what might be causing this?

Thanks for your help!
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Old 11-06-2016, 12:59 PM   #2
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is your rear tire size different than before? if you changed rear sizes and didnt change the fronts, it could be that the abs/tc is getting confused.
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Old 11-06-2016, 01:41 PM   #3
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Quote:
Originally Posted by JOHNSONROD View Post
is your rear tire size different than before? if you changed rear sizes and didnt change the fronts, it could be that the abs/tc is getting confused.
Before they were 315/35/20 michelin PSS's. The fronts are still Michelin PSS's 285/35/20's.
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Old 11-06-2016, 02:27 PM   #4
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What size are the Toyo's? I don't see a 315/35/20 for the R888R. As mentioned, if the difference in diameter between the front and rear tires is too much the traction control can kick in because the computer thinks your tires are spinning relative to each other. People here have reported using 285/35/20 front and 315/35/20 rear which is ~0.85" difference or so and haven't had issues.
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Old 11-06-2016, 03:47 PM   #5
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I used up a set of 888s on the track in my ZL1 and had 0 issues ... 285/35/20r fronts 315/30/20r rears
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Old 11-07-2016, 09:45 AM   #6
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Quote:
Originally Posted by KillboyPowerhead View Post
What size are the Toyo's? I don't see a 315/35/20 for the R888R. As mentioned, if the difference in diameter between the front and rear tires is too much the traction control can kick in because the computer thinks your tires are spinning relative to each other. People here have reported using 285/35/20 front and 315/35/20 rear which is ~0.85" difference or so and haven't had issues.
Thats correct. My new rear tire size is 315/30/20 and the fronts retained the same diameter that they run in the michelin PSS
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Old 11-07-2016, 10:44 AM   #7
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Do you have any pictures of the car with the new tires on?

The only time I have heard of TC "issues" with new tires, is when there is a significant tire heigh difference between the rear and the front.
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Old 11-07-2016, 11:49 PM   #8
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Originally Posted by ZYBORG View Post
Do you have any pictures of the car with the new tires on?

The only time I have heard of TC "issues" with new tires, is when there is a significant tire heigh difference between the rear and the front.
No pictures but you can defiantly tell a big difference in tire height compared to the Michelin's up front.. I just cant bare to throw away the hardly used Michelins 😥
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Old 11-08-2016, 05:14 AM   #9
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https://www.tacomaworld.com/tirecalc...5r20-315-30r20

This is the tire height for both, only a .4" difference front to back, are all tires properly inflated?
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Old 11-08-2016, 11:03 AM   #10
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Quote:
Originally Posted by fif_gen_powa View Post
https://www.tacomaworld.com/tirecalc...5r20-315-30r20

This is the tire height for both, only a .4" difference front to back, are all tires properly inflated?
I have the tires set to 32lbs on all 4 corners. Thoughts on tire pressure?
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