Originally Posted by ade

You won't need to do anything with the pinch seams. That is a horizontal clearance issue not vertical travel.

Originally Posted by Mark Doiron

My Jeep with 35s (Duratracs) rubbed on the pinch seams. It did this while aired down , fully loaded, and hitting dips and bumps at moderate speeds on White Rim Trail. The standard static demo on jackstands is not a reliable indicator since it ignores the effect of the aired-down tire bulging out. It is a good idea to trim the rear pinch seams for 35s.

Originally Posted by ade

I'm running Nittos and and the tires clear by a minimum of 3/4" at full flex. They measure 34 1/4" actual. Don't see how airing down can increase radial diameter, unless you are fully compressed with the tire on a large rock right next to the pinch seam.

Originally Posted by larry0071

The 2014+ is cut at a 45 from the factory.

Originally Posted by Mark Doiron

Okay, the full story since I'm on a computer and not my phone now. After I added 35s, I trimmed the pinch seam. I wasn't sure how far to trim it, so didn't dig too deep into the sheetmetal. Then, after trimming, I painted it with touch up paint. I then went on White Rim Trail--as I wrote, fully loaded. I didn't weigh my Jeep at that time, but I did just a couple weeks ago. My Jeep currently runs 6800 pounds, and that's not quite fully loaded--I was returning from a trip, so the jerry cans had been emptied, and we were running low on water and other supplies. I digress. Anyway, tire pressure reduced to 15 PSI (I now use 20 PSI, but that's a different story) on WRT. Whenever I'd hit a dip or bump I'd hear rubbing. This is what I found ...

<img src="https://www.jk-forum.com/forums/attachment.php?attachmentid=582043"/>

The paint, which had been applied only a few weeks earlier, was rubbed completely away. I got out the tools when back home and trimmed it some more and have never had that problem again. So, my real world experience on the "you don't need to trim for 35s" says it just ain't so. You do need to trim--at least on the earlier models (I've read that Jeep has modified it so trimming may not be necessary on the latest models).

Originally Posted by ade

As I said before. I'm running 35" Nittos on an 2008 and air down to between 16-18 PSI on the trail and have never rubbed the pinch seam. So real world now says you may or may not require pinch seam trimming. 2500lbs over curb, what you carrying in the back sir??

Originally Posted by Mark Doiron

A lot. A lot lot. But not when it rubbed because gear was at campsite and had soft top on. However had five people--my daughter's family, two USAF members, a gymnast, and her skinny brother, so please don't jump to incorrect conclusions on their weight. All four of them are not particularly large. It is such an easy thing to trim to avoid the issue, I have no idea why people argue over it. Trim. Don't trim. The only thing I'm calling BS on is when people write it can't rub. Yes.It.Can.

Originally Posted by Mark Doiron

My Jeep with 35s (Duratracs) rubbed on the pinch seams. It did this while aired down , fully loaded, and hitting dips and bumps at moderate speeds on White Rim Trail. The standard static demo on jackstands is not a reliable indicator since it ignores the effect of the aired-down tire bulging out. It is a good idea to trim the rear pinch seams for 35s.

Originally Posted by ade

Likewise, I call BS on anyone saying you MUST trim for 35s. Wasn't jumping to anything, was just inquiring on what made up the 1ton of extras you were carrying.

Originally Posted by Mark Doiron

And I didn't write that, did I? So why are we arguing?

Since I'm on my computer now, instead of phone, here are pictures of my Jeep, including an image of my mods (in case you can't access them on whatever device you use to browse the forum under my profile) ...










Attachment 582246