Subject	If my math is right, that's about a 0.6% difference
Posted by	black300zx on February 22, 2022 at 2:59 PM
	This message has been viewed 220 times.
In Reply To	Don't currently have the log in front of me but about 4 kph posted by Barry (NJ) on February 22, 2022 at 01:45 PM
Message	If it was a sensor tooth count difference, you'd need something like the following: 1000 teeth front/10006 teeth rear 500 teeth front/503 teeth rear For a 46 tooth sensor, one additional tooth would be 2.2%, 3 or 4x the difference you're seeing. I'd be surprised if ABS sensors were designed with tooth counts that close. The difference in your stated tire diameters (25.6 and 25.7") is about 0.4% which is pretty close to the difference in kph you're seeing. Are you sure you have the parameters entered correctly? Are you sure you didn't swap diameters front and back in software? Did you measure diameters with the tires inflated similarly? I have zero familiarity with traction control, but it seems like tire wear alone could cause 0.5% variation in the front-to-rear measured speeds, let alone difference in working diameters as the tire heats up and cools down. I don't think you'll ever have them perfectly matching.
Follow Ups	ABS Sensor Tooth Counts(?) - Eric(NJ) 17:45:13 02/21/22 Does the rolling diameter of your wheels match? (n/m) - Bernie (NoVA) 19:48:35 02/21/22 No, but that is entered into the configuration software, - Barry (NJ) 08:09:54 02/22/22 25.6" Rear and 25.7" Front, difference is minimal. - Eric(NJ) 08:37:31 02/22/22 For anyone searching this in the future... - Eric(NJ) 19:33:54 02/23/22 Cool (n/m) - Barry (NJ) 21:36:54 02/23/22 Well that's frustrating! - black300zx 08:20:17 02/24/22 Yes, and there are 6 presets available to program, so - Barry (NJ) 10:04:11 02/24/22 So.....? - Bernie (NoVA) 21:42:26 03/05/22 Re: ABS Sensor Tooth Counts(?) - Kvert 10:56:40 02/22/22 Don't currently have the log in front of me but about 4 kph - Barry (NJ) 13:45:39 02/22/22 If my math is right, that's about a 0.6% difference - black300zx 14:59:56 02/22/22 Well, that's the actual difference, but the difference - Barry (NJ) 19:24:23 02/22/22 Here's the config... - Barry (NJ) 20:00:45 02/22/22 Ahhh - I misunderstood - black300zx 07:11:36 02/23/22 Yeah, actual difference is only 0.4%, and log is showing - Barry (NJ) 08:42:08 02/23/22 Re: Well, that's the actual difference, but the difference - Kvert 07:58:35 02/23/22 May just have to do that... - Barry (NJ) 16:46:25 02/23/22 Re: Well, that's the actual difference, but the difference - Kvert 08:08:15 02/23/22
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