Spare tire issue

tall boy · Sep 15, 2015

Recently went to a 42 inch Krawler on the Jeep. I still have my spare 39 Krawler in the garage.

Anyone ever gone riding with one tire a different size? Is that the worst idea in the world to keep the 39 in case I an on a trip and get a flat on the 42's?

85toyo · Sep 15, 2015

It's got to be better than riding around on a flat

bad80cj · Sep 15, 2015

I have done it a few times. Put 2 same size on the front and throw ya spare on the rear.

John Galbreath Jr. · Sep 16, 2015

One tire will have more revolutions than the other. If open, no problem. If locked, probably will "release / pop" some. If spooled or welded, it is going to push bad. If welded / spooled on one end only, run different sizes on the other end. Do not hit pavement, as stuff needs to slip in this senerio.

jeeptj99 · Sep 16, 2015

i always heard run the spare at a higher psi. Don't know if it works but just a thought.

JRowe · Sep 16, 2015

I'd sell the 39 and buy a swamper that was the same height to use as a spare. The smaller tire will get you off the trail or out of the woods, but will become an issue if you want to keep wheeling.

grcthird · Sep 16, 2015

Hagan needs a spare, sell it to him. His are always going flat.

1tfrot · Sep 16, 2015

JohnG said:
One tire will have more revolutions than the other. If open, no problem. If locked, probably will "release / pop" some. If spooled or welded, it is going to push bad. If welded / spooled on one end only, run different sizes on the other end. Do not hit pavement, as stuff needs to slip in this senerio.

this!

personally you're better off buying a cheap 42 of something to get closer in size