I need a new spare tire
#1
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After putting on my new wheels I realized I've never looked at my spare tire. I discovered that the spare tire is a 17 inch tire and my tires are 18 inch tires. I also discovered that they have a different circumference and therefore it is pretty much pointless because I won't be able to use it. I did some searches on ebay and in an effort reduce weight, I found these 00 01 02 03 04 05 LINCOLN LS SPARE TIRE WHEEL DONUT 145/80/16 OEM | eBay They have a circumference of 79 while my 18's have a circumference of 78.8. Would this cause problems within my front or rear differential, or would my diff be able to tolerate this small difference for a short amount of time? I will buy a full size tire if I really need to, but I would like to cut down on weight in the rear and I don't see me using my spare tire for much more than around 20 miles at the most. Thanks in advance for your help!
Last edited by disguay; 03-27-2012 at 06:44 PM.
#2
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I guess it will be able to handle the difference till you get the car to a shop. But on the other hand - it's always a good idea to have a full size spare tire. I mean to find the same used rim and tire as you have on the car now. It costs some money, but at least you won't be worrying about the transfercase
#3
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It's not really about the transfer case because the transfer case would only be under pressure if the front and the rear were different sizes. I just want to know how "open" our differentials are. I know that the full sized is the way to go, but it seems like a waste of money. 150 for a tire and 200 for a wheel is $350 so I can drive 20 miles in leisure. I wish I had $350 of extra spending money, but on a high school budget, I don't have that sort of extra change. Thanks for your input however!
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#6
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Disguay::: If you have a good tire dealer that you frequent they should be able to fix you up at minimal cost. CASE IN POINT: I put four new tires on the Granddaughters Grand Cherokee AWD, bought road hazard for $35.00 and they threw in a correct spare for nothing with 90% tread left.They make enough on a sale and they are glad to unload a used tire plus treat you good.They recommend about 2-3 % difference front to back and side to side for any extended period such as if you were on a trip had a blow out and don't want to get ripped off at a out-of town shop.I realize you need a rim also a junk yard should have a 105mm,5 inch bolt pattern rim with a 2" center hole for cheap. $50.00 total is peanuts compared to $2000.00 transfer rebuild.
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