different size spare?

[TurboTony]

I was wondering what would happen if I had to use my stock size spare with my 245 19. 5's in the event I have a tire go down. Granted, it would be fixed as soon as possible. If it was a front tire that was flat, would swap a front and rear to keep both fronts the same size. Really dont want to spend $500 on a 19. 5 tire and wheel spare if a 265-70-17 will work in an emergency.

Appreciate some opinions.

 

[jelag]

I've got a DORF F 550 as well as the trucks listed below... we've never had a flat on a 19. 5 because of the strength of the tire... ... the truck now has 375K miles... . But we do have posi-tracks in all the trucks... I wouldn't put an odd size spare on the ground... . not even for 2 or 3 miles...



Just my thoughts. .

 

[klenger]

It would be more important to keep like sized tires on the rear if you have the anit-spin read diff.



Different sized tires may also throw an ABS code.

 

[Hercules130]

You should be fine as long as you don't have lockers (which you don't cuz there are none) and don't use 4x4.

 

[CTieman]

I have 35" tires with stock spare. Lost the bead on a front while low pressure driving in sand. Put the spare on to get off the beach in San Felipe and ever 30' or so a very loud knock was heard. Only drove about 100yrds in the dirt. I wouldn't even try it on pavement. I was in 2 wheel drive.

 

[RockinJ]

Different diameter tires rolling down the road on the same vehicle will also probably throw an ABS code since the speed sensors will be out of sync with each other.

 

[wyosteve]

A few years back on my '98 w/o limited slip rear, I had a wheel come off and shear 5 studs. Was running 255's and put on the spare which I believe was a 235. Anyway, had no choice but to drive since it was in the middle of nowhere here in Wyo. w/ a 4 horse loaded trailer. Drove that way for about 150 miles albeit slowly--35 mph. Didn't hurt a thing and truck drove fine as long as I owned it.

 

[TurboTony]

Thanks quys. I never thought of the posi(which I have) or the abs. Hunting seasons coming and I just think I need to carry an appropriate size spare.

 

[GaryCarter]

I think I would shoot for a 17" spare that was the same or very close overall dia. as the 19. 5's.

Unless you travel really heavy and need the weight rating.



Gary