are you looking to add the extra 1.5 to gear the car differently?
or is it 1.5 wider? I get that if it fits. I looked at my tire size calculator and couldn't find the second tire size.
since this is the race forum I assume you're not driving on the street much if at all?
My et-streets are too sticky for the road they would pick up every nail and sharp object. just too expensive to have holes in and I assume once you have a hole in one you're probably going to junk it . I would! I'm not going to race a patchwork tire. I will like to follow this thread for GOOD answers, as I to would like to know which way to go when it's time for my the tires.