Please Help - Spare Tire Sizes
 

Can anyone help. I need to know the tire size for the 1994-1998 Mustang Cobra Mini Spare.
I have a 1993 car & I am fitting the M2300K Corba Brake conversion kit. I have the Cobra R 17X9 wheels & also the M1007K mini spare wheel, but have drawn a complete blank with trying to discover the spare tire size.
Can someone either check their spare wheel tire size if they have a 1994-98 Cobra or advise me where I can get this information.

I live in the UK & trying to get hold of this is difficult !!

Thanks in advance