Hi, can any of you guys help me out? Bought a set of BRMs off a guy who had them on a T25 wanting to fit them on my 1970 T2 they have 195/65/15 on at the moment when I dropped it off the jack the tyre fouls on the wheel arch someone said the et is wrong shows 6 on back of wheel. If I put 185/65/15 and they clear the arch is it ok to run don't really understand et