Has anyone had this problem of having staggered tires causing the ABS light to stay on. If so, how did you correct the problem? I'm the original owner of a 1999 Mustang GT automatic with traction control. The car came with 245/45ZR17s all around. I now am running 245/40ZR18s up front and 295ZR18s in the rear. The ABS light has been on for years and when the problem first appeared I took it to a local Ford dealer and they wanted $800 to replace the ABS module. I said screw it, I'll drive with the light on. Well I now am annoyed at looking at the dash and seeing the ABS light on and also traction control being off. I went and got a used ABS module and the light was out for a day and then it came back the next morning when I started the car. The mechanic said the ABS module he put in is good and that it's talking to the computer and it's telling him that the right sensor is bad. The mechanic also said that replacing the right sensor may not correct the problem. My problem according to him is that the wheels and tires are 2 different sizes and it's throwing the ABS module off. He said that on the '05 and newer cars you can enter your new tire sizes and it would allow you to go forward w/o the light coming on. Thanks in advance.