Difference in tire size front/rear before ABS issues??
Thread Starter
Teching In
Joined: Sep 2010
Posts: 9
Likes: 0
Difference in tire size front/rear before ABS issues?? I just purchased a 99 WS6 that has aftermarket wheels and tires on it. The ABS light and Brake light are on. I know that people in F-Body forums have said that if there is too much of a difference in tire size between the front and the rear that causes ABS problems.
It currently has:
245/40ZR18 on the front
285/35ZR18 on the rear
Is that enough of a difference to cause the ABS light to be on? Or am I going to be looking at tracking down some place to have the codes read and actually correct an ABS issue?
Also wanted to check because I need to replace the tires and don't want to buy the same sizes if they are causing the issue.
Thanks
It currently has:
245/40ZR18 on the front
285/35ZR18 on the rear
Is that enough of a difference to cause the ABS light to be on? Or am I going to be looking at tracking down some place to have the codes read and actually correct an ABS issue?
Also wanted to check because I need to replace the tires and don't want to buy the same sizes if they are causing the issue.
Thanks
You've got other issues. Those tires are almost the same size overall.
Why people keep putting such narrow tires on the front baffles me, but that's not causing your light. You're just losing traction.
Why people keep putting such narrow tires on the front baffles me, but that's not causing your light. You're just losing traction.
Launching!
Joined: Oct 2009
Posts: 207
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As Eskimo pointed, the tires are very similar in size. Your ABS system is malfunctioning. Your braking system can be hampered as it may not operate correctly reducing braking performance.
You can either fix the problem, which can get rather expensive or consider removing it with an ABS delete kit like many others do. If its a sensor, it may set you back a few hundred. If its your ABS controller, plan on spending up to a grand. Dealer troubleshooting isn't inexpensive either. Many times, they troubleshoot by just replacing parts...at your expense.
Removing ABS will not change normal braking response. Actually, when you remove it, you'll be adding a proportioning valve wheras you'll be able to adjust your brake bias which can improve braking performance...something you couldn't do before.
Good luck!
You can either fix the problem, which can get rather expensive or consider removing it with an ABS delete kit like many others do. If its a sensor, it may set you back a few hundred. If its your ABS controller, plan on spending up to a grand. Dealer troubleshooting isn't inexpensive either. Many times, they troubleshoot by just replacing parts...at your expense.
Removing ABS will not change normal braking response. Actually, when you remove it, you'll be adding a proportioning valve wheras you'll be able to adjust your brake bias which can improve braking performance...something you couldn't do before.
Good luck!
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Thread Starter
Teching In
Joined: Sep 2010
Posts: 9
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Thanks for the replies. I haven't had a chance to even look at the ABS yet, been changing out the power steering cooler, radiator, and doing standard maintenance stuff....that power steering cooler was the dumbest thing that I've ever looked at on a car. Needless to say the upper radiator hose is now one that has no cooler provision and I have a regular finned cooler mounted in front of the radiator. No more coolant flushing for hours if that goes bad again.
Anyways, back to the ABS...after hearing that it is quite costly to repair it, I think I will check/clean up the wheel sensors. If that doesn't correct the issue I'll be going the ABS delete option. Do you guys use the SJM kits or is there something else out there? Also, when that kit goes into the car do you have to de-solder the ABS and brake idiot lights on the dash? Or do they just not come on anymore?
Anyways, back to the ABS...after hearing that it is quite costly to repair it, I think I will check/clean up the wheel sensors. If that doesn't correct the issue I'll be going the ABS delete option. Do you guys use the SJM kits or is there something else out there? Also, when that kit goes into the car do you have to de-solder the ABS and brake idiot lights on the dash? Or do they just not come on anymore?
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TECH Apprentice
Joined: Jun 2009
Posts: 370
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From: Garland, TX
from what I have read, you have to remove the lights from behind the dash. There is no way to delete them.
When I delete my abs, I will be using the SJM kit with the solenoid to lock the front brakes for staging(line lock). The other company that has a kit is Hurst If I remember right. I could be wrong though.
When I delete my abs, I will be using the SJM kit with the solenoid to lock the front brakes for staging(line lock). The other company that has a kit is Hurst If I remember right. I could be wrong though.
Launching!
Joined: Oct 2009
Posts: 207
Likes: 0
from what I have read, you have to remove the lights from behind the dash. There is no way to delete them.
When I delete my abs, I will be using the SJM kit with the solenoid to lock the front brakes for staging(line lock). The other company that has a kit is Hurst If I remember right. I could be wrong though.
When I delete my abs, I will be using the SJM kit with the solenoid to lock the front brakes for staging(line lock). The other company that has a kit is Hurst If I remember right. I could be wrong though.
