hi i have put bigger tires on the front 255/65r16. rear are 265/75r16... vs old rims/tire 225/75r16 . here is a picture ... to cut to the chase van goes in to limp mode speedo doesn't function right abs light on and such.. Has any body done the same thing with their sprinter or knew of a remedy to this problem? are there different abs rings i can swap with less teeth count for ex to fool the ecm ? as far as i have heard is that on t1n model sprinters the ecm is not reprogrammable to different size tires true / false. does anybody have an effective solution to this problem thanks.