There is a long complete thread on the subject on this forum (do a search using the key word "gate"). I know people with 35" on their gate + a highlift for over a year and have no problem, but it seems other destroyed their in months.. must depend on the distance between the gate (relocalization bracket or offset in after market wheels) and on the weight of the spare overall (the custom wheel is not very heavy, but some wider steel wheels are).

Mine is on for one month, no issue, but I will remove it for day to day driving and put it back for trail and long trips. It seems to be the cracks in the road, the pot holes and train rails that are mostly the problem creating fatigue by the small movements, not the trail.

Neoxxis has a nice support using the hitch to support part of the weight, and I am thinking of doing the same, but using a 4" wheel bolted on the hitch extension so I can open the gate and the spare will roll on or off the wheel that will be adjusted to support the weight when the gate is closed.

 

I've had my 35" on the gate for 2 years with no problems yet...
And i believe the dick cepeks MCs are one of the heaviest tires.

No bracket needed on mine. and you can still see the reverse light.

 

I have 33" Goodyear Duratrac's with a 1.5" spacer....I have close to 10,000kms on them and still look good! It's my daily driver too....i use it for work and am on the road all day!!!!

https://www.jk-forum.com/forums/show...53#post1176653

 

I've got KM2s and have found them anything but "tear prone." 4WD&SU recently did a full street and trail review of these tires and had nothing but good to say about them. They don't have to be aired down as far as some of the other choices out there. I found they deflected nicely and conformed themselves to rocks very well at 20psi. Based on the article, I'd not go much lower than 15 (I can e-mail it to you in .pdf form if you like).

Long story short, KM2s are, I think, the best overall JK tire a guy can own these days. Quieter than a traditional MT, long lasting, superb in the rocks, good handling on dry pavement (the only minor issue might be less than stellar wet weather performance due to a total lack of siping).

 

Forgot to say, I am on Firestone Destination M/T 35"x12.5 for 3000Km and 6 trails, and I only pressure down to 24psi on the rocks, so far I have only good to say about them !! And its my daily drive too, at 35psi on the road. A little noise they are, but I can still use my cell phone and radio or have conversation with my kids on the back seat, so the noise isn't bad at all !! Needed to use the Teraflex relocalisation bracket so the spare clears my bumper (body lift will correct that in the future) which is not necessarily good since the tire is farther from the gate and this multiplies the weight and amplifies the movement, and I must admit I don't like to see it move on the gate when not supported on a bad road, but no signs of trouble yet. I will remove it from the gate for daily driving and for the winter, and put it back for the trails. This will save wear of the gate for sure.

 

Running the Cooper STT's and they have been great.... I have near 30K km on the tires and they still look new. No issues with mud or rock and at 20PSI, very quiet on the highway and have not chunked. They are lighter than the Toyo M/T....but not as strong sidewall as the Toyo M/T....I am just waiting for a sidewall puncture down the road.

 

Had 35 KM2s on the tailgate plus a hi-lift for over six months now with no issues. I also make sure that I do not leave the gate open too long. I saw on Q'tec website that MBRP are doing hinge supports for the tailgate. Seems like a great idea and worth doing sooner rather than later.

Would recommend the KM2s - very capable on and off road and are still not showing too much signs of wear. I air down to 12 psi with no issues.