Spare different size - JeepForum.com

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post #1 of 44 Old 06-06-2007, 12:29 PM Thread Starter
Morgen251
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Spare different size

Anyone know where (or have one) I can get a single Maxxis Bighorn 31x10.5?

The guy I bought my jeep from only had the four mounted, the spare is a Goodyear Wrangler 215 75R15.....I'm assuming it wouldn't ride right if needed as a spare.

Willing to trade as well.....


2010 JK Wrangler. Born to me on 12/28/09 when El Jeepo (TJ) decided 160K was enough, and threw a rod through a cylinder.

BUILD:
Rubi Rocker Guards; 32" Mastercraft MTs; Teraflex 2.5" Coil Spring Lift; JKS Quick Discos; JKS Front & Rear Adj Trackbars; JKS Ex Rear Swaybar links; Zone Nitro Shocks; 1.5" Rough Country Wheel Spacers; Poison Spyder Evap Skid; Cobra 75WXST; 3' Firestick quick disco; Rugged Ridge XHD Fr Bumper; Tuffy Underseat Drawer; 6" KC Long Range Hilites; Superchips Flashpaq, Crown Extended brake lines

WISH LIST: Front LCAs, Winch, 6" KC Driving Lights, Deep Cycle Battery
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post #2 of 44 Old 06-06-2007, 12:56 PM
Combatsylvania
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a short distance on a undersized spare isnt horrble... just dont put in in 4 wheel drive

2006 TJ SE - Does what I want it to do.


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post #3 of 44 Old 06-06-2007, 01:07 PM Thread Starter
Morgen251
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Just wanted to make sure it wouldn't be a compatability issue and cause major problems. I'd only use until I could get somewhere to get the main fixed.

Thanks Combatsylvania....always droppin the good knowledge.

2010 JK Wrangler. Born to me on 12/28/09 when El Jeepo (TJ) decided 160K was enough, and threw a rod through a cylinder.

BUILD:
Rubi Rocker Guards; 32" Mastercraft MTs; Teraflex 2.5" Coil Spring Lift; JKS Quick Discos; JKS Front & Rear Adj Trackbars; JKS Ex Rear Swaybar links; Zone Nitro Shocks; 1.5" Rough Country Wheel Spacers; Poison Spyder Evap Skid; Cobra 75WXST; 3' Firestick quick disco; Rugged Ridge XHD Fr Bumper; Tuffy Underseat Drawer; 6" KC Long Range Hilites; Superchips Flashpaq, Crown Extended brake lines

WISH LIST: Front LCAs, Winch, 6" KC Driving Lights, Deep Cycle Battery
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post #4 of 44 Old 06-06-2007, 01:12 PM
KennyTJ
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Never ever use a tire of a different size front or rear. Turning your Jeep into a tripod will cause handling problems that can kill you and someone esle on the road!

A 215/75 15 is only a 28" tire, that 3" sorter!

Seriously you can find all kinds of tires locally and on forums for less than $50 for a good spare, please find a spare that is at least the same dia.

THINK OF THE CHILDREN MAN!~

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post #5 of 44 Old 06-06-2007, 01:14 PM Thread Starter
Morgen251
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That was my first thought (not of the children, of the compatability and size difference). Maybe I can find someone who wants a trade.

Standard tire carrier on the TJ strong enough to hold a 31 without hinge damage?

2010 JK Wrangler. Born to me on 12/28/09 when El Jeepo (TJ) decided 160K was enough, and threw a rod through a cylinder.

BUILD:
Rubi Rocker Guards; 32" Mastercraft MTs; Teraflex 2.5" Coil Spring Lift; JKS Quick Discos; JKS Front & Rear Adj Trackbars; JKS Ex Rear Swaybar links; Zone Nitro Shocks; 1.5" Rough Country Wheel Spacers; Poison Spyder Evap Skid; Cobra 75WXST; 3' Firestick quick disco; Rugged Ridge XHD Fr Bumper; Tuffy Underseat Drawer; 6" KC Long Range Hilites; Superchips Flashpaq, Crown Extended brake lines

WISH LIST: Front LCAs, Winch, 6" KC Driving Lights, Deep Cycle Battery
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post #6 of 44 Old 06-06-2007, 01:20 PM
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Lots of folks run 31s on the stock carrier without issues. I noticed mine was getting a little hard to swing after a couple of years, so I got the bestop carrier.

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post #7 of 44 Old 06-06-2007, 01:22 PM Thread Starter
Morgen251
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Sweet....hoping to not have to buy a new carrier right away. Still waiting for my new top to come in....

2010 JK Wrangler. Born to me on 12/28/09 when El Jeepo (TJ) decided 160K was enough, and threw a rod through a cylinder.

BUILD:
Rubi Rocker Guards; 32" Mastercraft MTs; Teraflex 2.5" Coil Spring Lift; JKS Quick Discos; JKS Front & Rear Adj Trackbars; JKS Ex Rear Swaybar links; Zone Nitro Shocks; 1.5" Rough Country Wheel Spacers; Poison Spyder Evap Skid; Cobra 75WXST; 3' Firestick quick disco; Rugged Ridge XHD Fr Bumper; Tuffy Underseat Drawer; 6" KC Long Range Hilites; Superchips Flashpaq, Crown Extended brake lines

WISH LIST: Front LCAs, Winch, 6" KC Driving Lights, Deep Cycle Battery
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post #8 of 44 Old 06-06-2007, 01:43 PM
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Quote:
Originally Posted by KennyTJ
Never ever use a tire of a different size front or rear. Turning your Jeep into a tripod will cause handling problems that can kill you and someone esle on the road!
He's right, concerning the dangers. Otherwise, if you feel confident and it's only a short trip from the trail to your garage, it's fine as long as you don't have a locker/limited slip. It just means it'll be spinning faster than the others.. overuse of this (i assume) would cause abnormal tire wear, but for a minor ride, i don't think there'd be a problem.

But again, don't drive home confident that it'll handle like normal.
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post #9 of 44 Old 06-06-2007, 01:45 PM Thread Starter
Morgen251
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I think I'm just going to try to swap this one out for a spare 31 to remove all doubt. Thanks for the tips!

2010 JK Wrangler. Born to me on 12/28/09 when El Jeepo (TJ) decided 160K was enough, and threw a rod through a cylinder.

BUILD:
Rubi Rocker Guards; 32" Mastercraft MTs; Teraflex 2.5" Coil Spring Lift; JKS Quick Discos; JKS Front & Rear Adj Trackbars; JKS Ex Rear Swaybar links; Zone Nitro Shocks; 1.5" Rough Country Wheel Spacers; Poison Spyder Evap Skid; Cobra 75WXST; 3' Firestick quick disco; Rugged Ridge XHD Fr Bumper; Tuffy Underseat Drawer; 6" KC Long Range Hilites; Superchips Flashpaq, Crown Extended brake lines

WISH LIST: Front LCAs, Winch, 6" KC Driving Lights, Deep Cycle Battery
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post #10 of 44 Old 06-06-2007, 01:51 PM
Combatsylvania
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it handles like any car does on a donut..

I recently found a set of super cheap matching tires (bald) that im gonna buy so I have a full sized spare... but to get you home a smaller spare is fine.

Your only talking about a 1.5" radius difference... now if it was a set 35 inch tires with a 28" spare i wouldn't dream of using it.

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post #11 of 44 Old 06-06-2007, 09:45 PM
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How have those maxxis bighorns performed--street/trail. I am looking at some 31x10.5 or 32x11.5 bighorns? good luck with your spare


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post #12 of 44 Old 06-06-2007, 09:53 PM
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Quote:
Originally Posted by Combatsylvania
it handles like any car does on a donut..
good point...
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post #13 of 44 Old 06-07-2007, 08:16 AM
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Quote:
Originally Posted by Combatsylvania
it handles like any car does on a donut..


Exactly.

There will be no problem getting off the road with a smaller spare. Treat it like a donut and you will be fine. Slow speeds.

Used a smaller (30 when I was running 33) tire on the back of my TJ once to get somewhere to get it fixed. I have the TracLoc LSD in the back but had no problems with handling. I just drove speed limits to town from the campground.

I have heard it could be a problem with a lunch box locker though. Difference in wheel spin would cause the locker to engage. I could see this being an issue in the front especially.

Seems that I have heard many times that a tire within one size would work, even in these circumstances.

On the trail though, you should have a spare as close in size as you can. Afterall, any difference onthe road will be multiplied offroad when off camber or climbing.

I carry a spare from my old set of tires. 33x9.5 BFG AT. My present tires are 33x12.5 TrXus MT's. When I increase my tires to 35 or 36" I will be buying 5 unless I find a great deal on 4. In which case I would be looking for a used 35 or 36 with even minimum tread left. Just enough to get me off the trail and get me home.

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post #14 of 44 Old 06-07-2007, 08:47 AM Thread Starter
Morgen251
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My bighorns are great......so I'm looking for a 5th spare if anyone has one/knows of where to get one for a good deal.

So I'll treat it like a donut until I get me a spare. Makes sense to me..and I've got no lockers so I should be good to go there.

2010 JK Wrangler. Born to me on 12/28/09 when El Jeepo (TJ) decided 160K was enough, and threw a rod through a cylinder.

BUILD:
Rubi Rocker Guards; 32" Mastercraft MTs; Teraflex 2.5" Coil Spring Lift; JKS Quick Discos; JKS Front & Rear Adj Trackbars; JKS Ex Rear Swaybar links; Zone Nitro Shocks; 1.5" Rough Country Wheel Spacers; Poison Spyder Evap Skid; Cobra 75WXST; 3' Firestick quick disco; Rugged Ridge XHD Fr Bumper; Tuffy Underseat Drawer; 6" KC Long Range Hilites; Superchips Flashpaq, Crown Extended brake lines

WISH LIST: Front LCAs, Winch, 6" KC Driving Lights, Deep Cycle Battery
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post #15 of 44 Old 06-07-2007, 09:38 AM
NYresq
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if the flat was in the rear I would take the time to swap one of the front tires to the rear and put the smaller tire on the non driving axel to save the diff. even a factory posi rear will eat itself in a short period of time with a smaller tire size on the same drive axel.
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