The handbook states the offset is ET34. Yet looking at sites of various vendors of alloys, offset is quoted ET35 to 38 (also quoted 18...25). Can someone tell me please how critical is the offset, given the variations found? As you can guess, I am looking to change the wheels (from 18" to 16") but do not want to have to fit spacers or such like to get the correct fit. If the variations (from 34 to 38) are acceptable, then a wider choice is available.
