shearpinn

Is there any measurable loss in performance (power) or mpg between a 34" tire (305/70r17) & a 35x12.5r17 for a 2012+ 3.6L auto trans (mine has 3.73s for now)?

Maybe more people can comment on 33" to 35" dif and assume a little more than 1/2 for the delta between 34 & 35 (I assume the loss is exponental vs linear)

Rich6700

I run 305/70/17 to me they are right on the boarder of keeping my 12 jku happy with performance.


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Monte417

I failed math class the only delta I know is the crappy airline with stale peanuts

shearpinn

This is the problem. I wonder if staying at the 34s, it might make all the difference in the world on-road (power & mpg) and most any off-raoding I will be doing with almost an un-noticable visual dif in size.

Problem is the 35's i am considering can be had for a smoking deal ($151 less total vs the 34s I am considering) and they dont make a 34 in r17

Rich6700

I'm running Goodyear MTR's 305/70/17. If it's not hilly were you live then go with the 35's. I think 35's with 3:73 the trans will be doing a lot of gear searching so to speak.


Sent from my iPhone using Tapatalk . Rich