Tire width under 72 Dart!Again!

yo!
i still need to get new tires as u all know i really want BFG's 255/60X15,but i still dont know if thell fit!as u all know i hav a few probs with what i hav now pics to remind u all of the prob http://www.cardomain.com/memberpage/451310/6 i hav now Dunlop G/T Qualifiers L-60X15,ya well there to big as u can see,can u guys tell me the metric convertion for them?I was told somewhere on the net that it was the same in relation to th 275/60X15 is this true?Also on Mickey thompsons site im lookin at Mickey Thompson® Indy Profile™ and one of the sizes is L-60X14 an the metric convesion is 295/60-14 http://www.mickeythompsontires.com/street.html now i dont know if there tire is the same as mine in the end but if ya look at the tread pat. u can see theat my tire is the lost twin of the mickey T,now i dont know if Mickey T bought Dunlop out or not what ever,Anyways the the sizes look to be obout wright with my tire but i cant tell,if my tire is L-60X15 and Mickey T says that there tire,like mine, is a 295/60X15 in metric,could i get away with running 255/60X15?Thats all i want is that tire size im not to sure what the specs of my rim are Adam (Fastback) has the same size as me i belive,in the pics u can see that i dont need to much more room to get them to work if my tire didnt hav such a big side wall width theyd work look at my pics closely,i hav jobs of spring room i just need to fix the 1/4 prob with the side wall,i dont want to hav to rely on my ari shocks to keep my tires from blowin out!Help me out guys i need to get this crap over with an out of my way so when my car starts up in a few weeks i can go out an kick some more Chebby ***!Thanks again guys
MIKE :afro: