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down-sizing 35" to 33" tires worth it?

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Old 09-20-2014, 06:14 AM
  #21  
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Originally Posted by bfschor
What about changing to a 285/75/17? It's a 34", which is prob more like a 33", instead of buying a 33", which is more like a 32".

Size seems to all depend on the tire manufacturer. My 35" Duratracs don't seem as big as some 35" Toyo's I've seen.

Duratrac 315/70/17's are about the lightest 35" tires you can get. A lot of 33's and 34's weigh just as much or even more. At least this was my observation back when I was researching tires.
I have 285/75-17 toyos and you are correct they measure 33" when mounted on the vehicle. weigh right at 60lbs on a postal scale.
Old 09-20-2014, 11:19 AM
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BFGoodrich is also coming out with a new size for the AT KO2, 34 x 10.5 x 17. They measure 33.5" according to their website
Old 09-20-2014, 11:36 AM
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Originally Posted by Fiveofun
BFGoodrich is also coming out with a new size for the AT KO2, 34 x 10.5 x 17. They measure 33.5" according to their website
The new BFGoodrich are Load-rated E, which is way too hard a tire even for a heavily loaded JKU.
Old 09-20-2014, 11:58 AM
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Originally Posted by GJeep
The new BFGoodrich are Load-rated E, which is way too hard a tire even for a heavily loaded JKU.
Been running stock 265/70R17 Load Range E KM2's for a year, no issues running either loaded or light. They come factory on the 10A's.

The 34X10.50R17 is just a little narrower than a 295/70R17, both are the same diameter.
Old 09-20-2014, 03:07 PM
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Originally Posted by kmrtnsn
Been running stock 265/70R17 Load Range E KM2's for a year, no issues running either loaded or light. They come factory on the 10A's.
Tires are part of the suspension system, and the harder the tire is, the harder the ride feel is.
What feels hard for one person, may feel OK to another, but the differences between load ratings are objective.
E-rated tire are made for about 340lbs to 420lbs more load per wheel, than D-rated tires.
This means that E-rated are made to support vehicles that are about 1,500 lbs heavier than D-rated tires are made for.
They're made for vehicles that weigh 1.5+ times the weight of a 4-dr Jeep.

This is achieved mainly by thicker and stiffer sidewalls.
Such sidewalls, supporting a Jeep that's 1,500 lbs lighter than what the tires are made for, would stiffen the ride.
If it doesn't bother you, that's perfectly OK. Most people, however, would prefer softer ride.
Old 09-20-2014, 05:08 PM
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I love my e rated toyos
Old 09-21-2014, 01:45 AM
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I am running e load ko's. They ride great, and are not stiff at all. when I was running cooper ST MAXX E loads My fillings were rattled loose, even with 28 psi. I am sure I could have ran 5 psi in the Coopers and still have adequate inflation. WAY TOO STIFF. Put the BFG KO's on and my jeep road smooth and awesome again.



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