Light weight 37" AT Tires vs heavier 35" MT Tires

laueddy

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It has been mentioned frequently that the JL Rubicon axle is good for 35" Tires, but running 37" tires off road can increase that risk quiet a bit. However, the total weight combined on MT can be much heavier vs AT.

As an example:
The stock 17 Rubicon wheel + KO2 AT is approx. 80 lbs. (22+58)
Total = 80 lbs

35x12.5R17 E Rated KO2 AT is about 66 lbs + Spacer + OEM Wheel
Total = 92 lbs

37x12.5R17 D Rated KO2 AT is about 69 lbs. Plus 1.75" wheel spacer, the combine weigh is approx. (22+4+69) = Total = 95 lbs

As for the MT, Toyo have 35" MT Tires weight as much as 80 lbs. Plus Beadlock wheel @ 40 lbs
Total = 120 lbs.

Does that make running 37" KO2 AT with stock axle pretty reasonable??
 

Squibbles

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The weight is only part of it, if there’s lateral force on the bottom of 37 it has greater leverage on the axle compared to a 35. I’d bet you start breaking half shafts first.
 

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