Changing Tire Size, Hazardous?
Thread Starter
Race Director
Joined: Aug 1999
Posts: 15,466
Likes: 0
From: GARDENA Ca, State Of Konfusion
St. Jude Donor '05
Changing Tire Size, Hazardous?
This is a response I found on another forum by C4C5 Specialist!
There is a down side that is NEVER talked about when changing tire sizes, the ABS/TCS system.
When you change the tire sizing on c5, this changes the rotational circumference of the wheel. This, in turn changes the rotational speed of the wheel sensor reluctor wheel. This changes the information given to the ABS/TCS control module.
Why is this bad????? Your ABS/TCS is calibrated and programmed to react to a given speed, and given information. If that information is changed or modified, as when tires are changed, the computer may not react correctly in a ABS/TCS event. This means that when you might need the antilock brakes, or the traction control, or the active handling, the computer may think it sees something that it does NOT and not compensate correctly.
This is why I do NOT recommend changing of tire sizes when tires are changed, as this could create a safety issue.
All the best, c4c5!
There is a down side that is NEVER talked about when changing tire sizes, the ABS/TCS system.
When you change the tire sizing on c5, this changes the rotational circumference of the wheel. This, in turn changes the rotational speed of the wheel sensor reluctor wheel. This changes the information given to the ABS/TCS control module.
Why is this bad????? Your ABS/TCS is calibrated and programmed to react to a given speed, and given information. If that information is changed or modified, as when tires are changed, the computer may not react correctly in a ABS/TCS event. This means that when you might need the antilock brakes, or the traction control, or the active handling, the computer may think it sees something that it does NOT and not compensate correctly.
This is why I do NOT recommend changing of tire sizes when tires are changed, as this could create a safety issue.
All the best, c4c5!
Race Director
Joined: Oct 2002
Posts: 16,477
Likes: 26
From: Gone
CI 6-7-8-9-10 Veteran
St. Jude Donor '03
Re: Changing Tire Size, Hazardous? (wallstAL)
I figured that was pretty common knowledge around here. They key part in his statement:
When upgrading to a larger or wider tire, the overall diameter and circumference is the thing to pay attention to. If you do that, you should have no problems. My 19/20's have almost identical overall diameters as the stock 17/18 tires.
'Tis good info though for those who don't know.
:cheers:
When you change the tire sizing on c5, this changes the rotational circumference of the wheel.
'Tis good info though for those who don't know.
:cheers:
