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Old 08-23-2010, 03:21 PM   #1
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Thinking About Tire Downsizing

I would like your thoughts on this. My scenario is - I've had my TJ Sport for 6 years with Goodyear MTR 30x9.50-R15's on stock Ravine wheels, never rock-climbed, never mudded, never aired down to run on the beach, etc. I've run lite trails and snow about 4 inches deep. Bottom line is that out of 88K miles on my Jeep only about 2000 have been offroad or in "4WD" weather conditions. My MTR's are needing replacement and I've started evaluating the replacement cost of new MTR's vs my actual driving conditions. It seems I need a highway tire more than an off-road tire. I've read a lot lately on the MB38 forums and have gotten interested in narrower tires. I found a set of 5 215/75-R15 Goodyear RT/S tires on stock Jeep steel wheels with less than 50 miles on them for $300 locally. I know most people remove their stock wheels and tires and upsize very soon after buying a Jeep, but I'm thinking of going back to basics for a while. Do you think this is a mistake, given my driving scenario?

If you have pics of your Jeep with stock wheels and tires like these in the photo, please post them so I can see how the appearance would be affected. I can't find any pictures of these on TJs. Thanks.
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Old 08-23-2010, 03:34 PM   #2
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Shoot a new set of tires ready mounted for $300. Don't sound like you can get hurt. If they don't work out you still have your wheels and can sell the new ones and apply the money to whatever does.

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Old 08-23-2010, 07:49 PM   #3
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Old 08-23-2010, 07:56 PM   #4
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you cant find any pictures of those smaller tires because no one likes them lol, if youre fine with it then thats great, everyone prob agrees with me bigger tires are better looking and more awesomeness
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Old 08-23-2010, 08:08 PM   #5
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For your scenario I don't think it's a mistake. You still have 4WD capabilities and even with a not too agressive tread your jeep will still be able to do a lot. Don't listen to those other guys
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Old 08-23-2010, 08:10 PM   #6
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i would never do this myself but seems like a good price. Try searching craigslist.com if your not already.
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Old 08-23-2010, 08:22 PM   #7
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Build your jeep to suit your needs. but I think since you still do some offroading, maybe some all terrains?
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Old 08-23-2010, 08:29 PM   #8
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For just a wee bit more Wal-mart has these exclusive Goodyear All terrains 31x10.50:

Car Tires by Make, Model, Size, Oil Changes, Auto Care - Walmart.com
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Old 08-23-2010, 08:40 PM   #9
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X2 on what Marc said. You'd be ok downsizing but since you do use 4WD every once in a while, a good all terrain would be a good compromise for the highway and light trail duty
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Old 08-24-2010, 07:24 AM   #10
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I had 30's on my '03 Sahara and went to a Cooper 32x11-50. Three of the five tires were out of round so after about 2500 miles and five balance jobs, the tire shop bought them back and I downsized to Hancook 31x10-50's. Lot better handling, more quiet and smoother. I don't do much off-road either but do use the 4-wheel drive some. The tire shop gave me $800.00 credit for my 5 stock aluminum wheels and Goodyear tires (they were on about 5K before trade-in). I do not like buying stuff made in China but...the Hancook seems to be a very good tire. The Coopers were made in the U.S.A..
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Old 08-24-2010, 07:33 AM   #11
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I'm not a fan of big tires when used mostly on the road. You will most likely see a gain in fuel milage with the smaller tires. I do think that an all terrain tire might be better than a road tire.
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Old 08-24-2010, 07:55 AM   #12
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I mean, I don't think it's crazy to downsize your tire, but I think the stocker 215/75 are too small. I'd at least go with an All-Terrain 235/75. That's the next step up and those look mildly aggressive. But if you're not planning on modding and off-roading, then by all means, it makes sense. The ONLY other concern I'd have coming from someone who lives in the mountains is that road-tires aren't able to tackle snow as well and combined with a short wheel base makes for a scary ride.

Here's some pics of the stockers



@Mistert

Hankook is actually a South Korean auto parts manufacturer (with two Chinese plants) and is a HUGE supplier of OEM parts to Toyota, Ford, Hyundai, GM, and International. They have an excellent reputation for their passenger tires. Excellent choice of tire no doubt, and for value they definitely shouldn't be overlooked. Granted Cooper is even bigger, but I always ran Hankooks on my Cougar (and got nervous by the name my first time haha) and absolutely love their tires.
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Old 08-24-2010, 08:18 AM   #13
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When I bought our Wrangler a few months back...
it had 31x10.50 on it... I thought they looked pretty good, but once I got home, I found out that one tire was JUNK (spare, it had been patched - on it's side wall - just to hold air) and then the right rear tire had a bubble on the inside side wall (missed that when I bought it)...

So, I felt we had two choices - replace 2 tires or go down in size.
If I stayed with the 31x10.50 (it was going to be $300+, that was to match the other 3)
or
for new 4 tires ($325) 235/75/R15 - mounted and balanced - Stock Goodyear Wranglers.. So I went with 5 new tires (basically $400)..


For the type of driving that we (actually my wife) do... going to the 235/75/R15 were the right choice. Thought I did like the look of the 31x10.50's better... it just made better sense to go down.

I'm sure it helped MPG, but then again... who buys a JEEP for gas mileage
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Old 08-24-2010, 08:26 AM   #14
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Prius or Mini Van maybe????
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Old 08-24-2010, 09:27 AM   #15
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Bob that's a very nice looking Jeep.
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Old 08-24-2010, 09:35 AM   #16
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Quote:
Originally Posted by Klenger View Post
Bob that's a very nice looking Jeep.
Thanks...
It is a lot of fun...
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Old 08-24-2010, 07:01 PM   #17
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Wal Mart has some nice looking Goodyear Wrangler Autority for $135ea for 31x 10.50s My link above didn't work

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