Might want to not consider the 345s... I haven't seen them in stock anywhere and they aren't in production currently. I really want a set and I am patient about it due funds currently do not allow new shoes. If you want anything soon you may have to look at something else or different size.

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Let us know what you get and if you have issues. Next year I will be getting new tires and my d30 is near identical to yours

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I had 35" KM2's on stock 18" Sahara rims and at half tread they measured 33.6".

I have 37" Cooper STT's and they measured 37" when I got them, but I think the KM2 is the best all around tire out there. It was quite, looked good, was aggressive looking, and wheeled well..

The MTR is my 2nd favorite tire. But it was much louder after they had a few miles on them and did not like the rain as much as the KM2.. But they measured right, 35" was 34.5" at half tread..

 

Toyo M/T and Nittos run close to size based on my experience. My 315/75/16 Toyos were just barley smaller looking that my buddy;s 37" KM2's. he has since switched to 37" Toyos which are huge compred to the KM2's. As others have stated, the MTR's run close to spec but tough as hell to balance.

 

So that bring me to my next question. If I was to go with a 345 75 r16! That should put me at a true 35 maybe 35.5, with my current rig 16x8 rim am I going to have issue with mounting that tire it's only a inch larger than what I have now. But I'm guessing that's a lot. I don't want to be rubbing my control arms at turn and flex I have plenty of room in my wheel well with the 3" lift and flat finders . I'm just worried about the with of the tire and mounting it in a 16x8