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Old 09-28-2014, 07:45 PM   #11
Lost in the Woods
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If you go with a wider 275 or 285 (this is the width in mm) then you should use a lower profile tire such as 60 to keep the tire the same height i.e. 285/60/17 or 275/65/17. I didn't check for exact compatible tire sizes but you get the idea.

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Old 09-28-2014, 08:12 PM   #12
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Good explanation of what the numbers on tires mean...

1981 Jayco jdove -sold
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Old 09-28-2014, 08:13 PM   #13
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Thank you
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Old 09-29-2014, 04:06 PM   #14
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Newer vehicles may have a provision to reprogram the computer for different tire sizes. This will help with things like the transmission and keeping the truck in its power band. If I were going to change the tire size on my truck, I would promptly have my computer re-flashed at the dealership to adjust to the new parameters.

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Old 10-01-2014, 11:55 PM   #15
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Oddly, sometimes "oversize" tires will cause a vehicle to wander a bit. Especially on newer vehicles, it's best to stay with what the vehicle manufacturer recommends.
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Old 10-02-2014, 07:54 AM   #16
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I upped my towing weight back in 2012 considerably. Started looking for a 3/4 ton diesel for my tow vehicle. Located a 2007 Dodge Ram 2500 with the 5.9L Cummins engine. This vehicle had already been jacked up about 4 inches and was running Moto Metal 18 inch wheels with 305 65R18 tires on it. I had to put new tires on it at the time and they ran me about $1400. I tow about 12,000 on this rig and have had no problems whatsoever for almost 3 years now. Purchased a new 5th wheeler a year ago and just this week getting a new set of tires again after three years on these. The guys at the local Dodge dealer just love this vehicle and want to buy it off me. The speedometer runs about 3 mph too low but not enough to matter as I am not a speeder, especially hauling this rig. Am I just lucky so far I have not damaged anything or will the Dodge handle this setup????


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Old 10-02-2014, 08:05 AM   #17
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This is an interesting thread. Last year I replaced my plain old standard factory delivered tires. I went up one size. Still following factory guidelines. I did switch from touring tires to All Terrains. Now when hooked to the trailer I get a bit of spin in loose gravel and grass when starting out. Not much but enough to notice. Could the size be the reason or is it the ATs vs. touring?

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