I noticed that after replacing 1 of the tires from standard 245/45/r18 to a 225/50/r18 (all I could get at the time), I noticed multiple CEL lights of ABS, TCS off and SLIP as I started driving. If I were to replace all 4 tires from 245/45/r18 to either a set of 4x 225/50/r18 or 4x 255/60/r18, will I still run into that CEL light situation ?

Thanks.

Rudy

 

that SHOULD be close enough to not cause a problem but if the tires are at the opposite extremes of size limits it might. tires do vary in actual measurement. the same 245/45/18 from different brands could be very different in actual size.

 

Trying to figure out if any of the following are within the 3% deviation limit (if it even matters considering all 4 tires will be replaced with identical dimensions)....

225/50/r18
255/60/r18
245/40/18

You would think 245/40/18 would be within that 3% limit but does it really matter in the overall scheme? I understand why it went to cell when there was a mismatch of 3 x 245/45/r18 w/ 1 x 225/50/r18. Appreciate any input before I fork out 5 to 6 bills for new Michelins or Toyo sets and to be stuck w/ the same CEL errors.

 

if all 4 are the same size/brand it doesnt matter.

 

The difference in tire size 50 verses 45 may be enough to throw off the output of the wheel speed sensor. The sensor sends pulses to the cars ECM, if the pulses doesn't match the other wheels it's going to send a code.