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981 CS: front to rear ABS tolerance

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Old 03-13-2018, 12:57 AM
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JonL
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Default 981 CS: front to rear ABS tolerance

Does anyone know for certain what the 981 CS's ABS will tolerate in terms of difference in diameter front to rear?

I remember reading somewhere that the % difference rear to front should be 3% plus or minus 2%. Meaning the rear diameter should be 3% larger than the front. Indeed, when looking at the stock diameters of the 18", 19" and 20" tires for the 2014 CS, the are 4.2%, 3.8% and 2.6%.

The reason why I ask, is I'm hoping to run Toyo R888R 255/35-18, 295/30-18 which have equal diameters front to rear. I'm fairly certain the GT4 can run equal diameters front to rear but am unsure about the non-GT4 Cayman.

Thanks,

Jon
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