Tire size question.

I have a 05 GMC RCSB 2wd with 275/60/17 Kumho STXs. Its time for new tires and Im thinking of going with 275/60/17s in the front and 285/60/17s in the rear on widened stock steel rims. Will the differance in height, 30 for the front and 30.5 for the rear cause any ABS or any other problems? SES lights etc.?
Thanks, Rob

look on thier website. It will have the overall diameter.

I did, thats how I came up with the 30" front and 30.5" rear. Just wanted to know if the mismatched sizes would cause any ABS/computer issues.

It shouldnt cause a problem