A fellow stanger's car is only spinning with one wheel and we heard of this guy who would weld the inside part of the differential. So we went ahead and spoke to him and he said he would do it for $50. He has done it on all of the cars that are in his car club and has never had any trouble with any of them. So we made an appointment for tommorrow morning. We were pretty much sold on the idea but then my friends brother in law told him that it would mess up his tires when turning. Something about both tires not spinning the same when turning, which in turn, if they both spin the same amount of times on a turn, it would mess them up. I really don't understand him but it does seem to make a little sense. But then again, how do posi cars do it then? I guess all I'm asking is if this would be a good idea or not? Any bad sides to it? Any good sides?