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Another tire question -- using mismatch tires front and back

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  #1  
Old 12-09-2013 | 06:59 PM
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Default Another tire question -- using mismatch tires front and back

So when I bought my D2 earlier this year it had 235/70/16 tires on it. The fronts (and spare) are Goodyear SR-A, and the rears are Silent Armor A/T. I have come to find out the SR-A are junk in anything other than warm weather and dry roads from personal experience. The Silent Armors seemed ok but when I checked the load on them I noticed its 104T which is below the minimum for the rear tires. I was going to order another set of Silent Armors for the front until I discovered this.

My thoughts are put the Silent Armors on the front where that load rating is good enough and put some different tires on the rear. Was looking at the General Grabbers AT 2 tire which seem to have good reviews outside of faster wear and maybe a little noisy. That was my cheap option and wondering if anyone sees and issue with this

I could also spend a little more and just get all 4 General tires and then use one of the Silent Armors as a spare.

I drive maybe 5k a year on the car. I haven't really taken it off road and does still get a good chunk of that 5k on the highway. Not looking to go extreme off roading with this set of tires but maybe playing in light mud and snow is about all. I am not set on the General tires so opening that up for opinions as well

Thanks
 
  #2  
Old 12-09-2013 | 07:11 PM
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Mismatched tread patterns will be fine, mismatched sizes are not a good idea.

That said, 235/70/16 is significantly smaller (both height and width) than the 255/65/16 that came on the truck. In fact, I'm a bit surprised they could get a 235 on the wide wheels on your truck.

I recently replaced mine with the Definity Dakota A/T and I've been very impressed. The ride is good and they're no louder than the Michelin street tires that were on the truck. And I'm fairly certain I got them with the "buy 3 get 1 free" deal that Pepboys runs much of the time.

However, General makes good tires, and if the price is right I wouldn't hesitate to run them. I'd steer clear of Firestone, and personally I'm not a fan of BF Goodrich tires.
 
  #3  
Old 12-09-2013 | 08:13 PM
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^^^what the Dr. said
I think this would be hell on your CDL (if you lock it), in the same way it would be if you had mismatched sizes on the same axle.
 
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Old 12-10-2013 | 06:16 AM
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Mismatched tread patterns will be fine, mismatched sizes are not
 
  #5  
Old 12-10-2013 | 10:26 AM
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Good year's quality in my opinion has been **** the last 10 years. I'm not impressed at all.

I have had the Grabber AT2 on several trucks. I have them on my Rover too. I love them. They aren't any more noisy than any other all terrain tire.
 
  #6  
Old 12-10-2013 | 01:58 PM
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I did plan on running the same size around even if I ordered two but I went ahead and purchased 4 General Grabbers in the 255/65/16 size for about 580. Think that was an OK price. Will still fork out another 40 to 50 to get them mounted. Forgot to order one for the spare but found a used one on eBay for 40 bucks so picked that up as well just in case (yes I was being cheap still)
 
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Old 12-10-2013 | 02:50 PM
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Primussucks: "I think this would be hell on your CDL (if you lock it), in the same way it would be if you had mismatched sizes on the same axle."
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Will someone expand on this, on the horrible things that could happen, mechanically, with mismatched sizes, front to rear?
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For the Classic Range Rover, I know for a fact that is hell on the center differential, & potentially on front differential, to run mismatched sizes front to rear, because the Range Rs have a viscous coupling on center diff., so the different turning ration from differing tire sizes, causes the coupling to freeze up, lock up, within a short period of time, which leads to destruction of the center differential gears and/or front differential gears---gears literally break up in small pieces, while you are unaware that the viscous coupling is frozen up, and you are driving on pavement.
 
  #8  
Old 12-10-2013 | 03:48 PM
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The little bitty gears in the center diff are not designed to be constantly turning. The lubrication system isn't sufficient. So even if the diff isn't locked the gears could eventually seize if the front shaft and rear shaft spin a different rates.
 
  #9  
Old 12-10-2013 | 09:54 PM
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Since the Disco has 3 open differentials, it won't do any damage to any of them unless you lock the center differential or there is so much speed difference between the front and back axles that your traction control engages.
 
  #10  
Old 12-10-2013 | 09:56 PM
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Originally Posted by Big Jim Swade
Since the Disco has 3 open differentials, it won't do any damage to any of them unless you lock the center differential or there is so much speed difference between the front and back axles that your traction control engages.
No. The center is very weak when unlocked.
 


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