Sure-grip & spare tire size questions

[michiganpat]

are you big bolt pattern or small bolt pattern? BBP, a 96-2000 caravan spare tire is a 165/70R17 and 26.1" tall, small bolt pattern, see what you can find in compact spares in 5x100mm

 

[DartGTDan]

I've got small bolt pattern front & rear.

 

[str12-340]

my front and rear tires are very different in width, but close to the same diameter. To make sure I had maximum truck space a spent a few days finding the narrowest tire that was close to the same diameter. Now all the tires are interchangeable in an emergency. It took some research but the result is no hassle.. The front tires are 70 series, the backs are 60 series and I think the spare is an 83 (?) series on a 4 inch rim. The other result is that the car looks balanced when viewed from the side.

 

[Killer6]

The difference in travel is +4% for a 26.5" vs a 25.5", which is less than the +5% of the outer wheel vs the inner wheel on a 100ft. radius turn, as long as You're not trying to set a land speed record You'd have been fine.