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Alpha1BC · 04-13-2018, 08:08 AM

I saw 1% on mine this morning. I'd guess that this display measures LH vs RH rear wheel speeds to calculate the slip, and if that's the case I'd think 0-2% is normal for straight line driving. There's going to be a slight difference in rolling radius of the tire based on corner weight, tire pressure, and even a little bit of the tire's construction itself. I'd also not be surprised if there's a tiny bit of an error between the wheel speed sensors. Could be other sets of sensors on the car, but wheel speeds make most sense to me.

I'll do some poking around to see if I can find a more solid answer, because now I'm curious how it's actually calculated as well lol.

04-13-2018, 08:08 AM	#7
Alpha1BC Drives: 2017 1SS 1LE Join Date: Jun 2016 Location: Detroit, MI Posts: 1,000	I saw 1% on mine this morning. I'd guess that this display measures LH vs RH rear wheel speeds to calculate the slip, and if that's the case I'd think 0-2% is normal for straight line driving. There's going to be a slight difference in rolling radius of the tire based on corner weight, tire pressure, and even a little bit of the tire's construction itself. I'd also not be surprised if there's a tiny bit of an error between the wheel speed sensors. Could be other sets of sensors on the car, but wheel speeds make most sense to me. I'll do some poking around to see if I can find a more solid answer, because now I'm curious how it's actually calculated as well lol. __________________ 2017 SS 1LE. Last edited by Alpha1BC; 04-13-2018 at 08:22 AM.