I have a rear end, 3.73 with truetrac from Kass, DoctorDiff, and for the tires,
front: 225x15x60, 25.6" diameter.
Rear: 275x15x55, 26.9" diameter.

I would like only 1 spare tire, if I have a 26.3" diameter, it will be ok for the truetrack?
Thanks


70 Challenger, A66, 340 ci