Ok, I have a '98 V6 Camaro that I recently replaced all the brakes/tires on. Now, when I am driving down the road my brake/ABS INOP light will come on. I have talked to some people and think that it might be air in the brake lines. Does anyone else have another opinion? If it is air in the brake lines then how do I fix it?

 

You replacethe old tireswith stock sized tires?

 

Well I guess I should have clarified. I replaced just the back tires, but instead of 225/55 I used 225/65. But does that really matter?

 

To get rid of air in the brake lines, you need to bleed the brakes.
Did you connect the wheel speed sensors correctly when you changed the brakes and tires?

 

Uh, I'm not really sure what that is. It's not the first time that I changed my brakes and I had the tires done at a shop. I never had this problem till now.

 

Wheel speed sensors are sender devices used for reading the speed of the vehicle's wheel rotation
http://en.wikipedia.org/wiki/Wheel_speed_sensor

Btw I dont think your tire size matters, because the computer reads the revolutions of the wheel, it doesnt care about the size. I think you have a wheel speed sensor failure

 

If you have mismatched sized tires then your ABS will have a problem. Sure the wheel speed sensor senses rotations, but one could rotate only once in a mile, the other could rotate a million times in a mile. So in short, size DOES matter...

 

thats what she said lol[8D][8D][8D][8D][8D][8D]

but yea from what I read it doesn't, but it wont hurt to go back to the stock tires and see if the problem still persists.

 

Well I can't go back to stock, I gave my tires to the place that mounted and balanced my new tires so I'd have to go out and buy brand new tires. Is there any way to adjust the speed sensor?

 

You could put the same size up front as well.Not sure how else to make the ABS happy again.