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Unread 01-23-2014, 06:42 PM   #421
MichiganState88
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Post #327 says he has 275/65R18 which = 32" OD. You are looking at 275/55R20 which is 31.9". His offsets look stock even though it is an upgraded wheel. If you are sticking with factory you should be safe enough even if the Nitros appear to have tread knobs that stick out wider than the KOs. 275=width in MM of tread. 55=% sidewall height compared to tread. R20=rim in inches. Math to OD = 275*.55=151.25mm/25.4mm/" = 5.95" sidewall height * 2 sidewalls = 11.91" + 20" rim = 31.9. I figured all of that out within the last week looking at this and other threads.

**I do hear though that all manufacturers are slightly different**

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Unread 01-24-2014, 06:26 AM   #422
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Quote:
Originally Posted by MichiganState88 View Post
Post #327 says he has 275/65R18 which = 32" OD. You are looking at 275/55R20 which is 31.9". His offsets look stock even though it is an upgraded wheel. If you are sticking with factory you should be safe enough even if the Nitros appear to have tread knobs that stick out wider than the KOs. 275=width in MM of tread. 55=% sidewall height compared to tread. R20=rim in inches. Math to OD = 275*.55=151.25mm/25.4mm/" = 5.95" sidewall height * 2 sidewalls = 11.91" + 20" rim = 31.9. I figured all of that out within the last week looking at this and other threads.

**I do hear though that all manufacturers are slightly different**
Thanks for the info! Makes sense.

Yeah I saw post #327. He states it doesn't rub on any QL setting which is great, but he has QL, so when he's off road he can raise the setting to compensate for any bouncing, etc. My jeep doesn't have QL so I guess I'm trying to make sure when off road if there is bouncing there won't be any problems with the 275/55/20.
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Unread 01-28-2014, 07:26 PM   #423
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so i tried to quickly glimpse over the posts but did not seem to find my answer... can anyone quickly tell me what is THE biggest tire someone has managed to get under a WK2 ??
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Unread 01-28-2014, 09:07 PM   #424
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so i tried to quickly glimpse over the posts but did not seem to find my answer... can anyone quickly tell me what is THE biggest tire someone has managed to get under a WK2 ??
You should have spent more time then. Nobody said it would be a quick venture. Depends if you have QL or not.

At least you're in the right thread.
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Unread 01-28-2014, 09:15 PM   #425
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You should have spent more time then. Nobody said it would be a quick venture. Depends if you have QL or not.

At least you're in the right thread.
I asked because I see most people have 32" O.D tires or something that is very close... im just wondering if their is anyone that has managed to put on something significantly bigger... closer to a 34" O.D or something.

and just because I barely have any posts does not mean im a noob.. so no need for the smart-*** reply.
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Unread 01-28-2014, 09:32 PM   #426
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33s will not fit without heavy modifications. 32s will possibly fit.

To be continued...
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Unread 01-28-2014, 10:01 PM   #427
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33s will not fit without heavy modifications. 32s will possibly fit.

To be continued...
32s Fit!... we have those on my brothers 14'.. i posted a picture of it on the picture thread!
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Unread 01-28-2014, 10:13 PM   #428
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Right. I know 32s fit on certain models and it depends on the width, too.
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Unread 01-30-2014, 01:48 PM   #429
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Width is the issue. 33s can fit. I'm sure you can fit larger but you'll have to be okay with tires extending way beyond your fenders. I just ordered 275/60-20. Hopefully they will be narrow enough to fit without spacers. 305/55-20 was my original choice but they are considerably wider. I may still try them if the 275s leave a lot of room
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Unread 01-30-2014, 01:58 PM   #430
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Width is the issue. 33s can fit. I'm sure you can fit larger but you'll have to be okay with tires extending way beyond your fenders. I just ordered 275/60-20. Hopefully they will be narrow enough to fit without spacers. 305/55-20 was my original choice but they are considerably wider. I may still try them if the 275s leave a lot of room
Edit:

What kind of truck do you have? I didn't think 275/60 would fit without modification?
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Unread 01-30-2014, 02:17 PM   #431
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Fat fingered that 275/60-20. It's a 33" tire and just slightly wider than stock, so im hoping I can still fit a spare. No biggie if I cant. I went with the rocky mountain ats. It was between that and the coopers. No Nittos in this size. If the tires look too narrow in person, then ill figure something else out.

I have an RRO lift as well. I intentionally purchased a Limited so I could avoid QL so my goal is to fit something a QL cant
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Unread 01-30-2014, 05:53 PM   #432
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Fat fingered that 275/60-20. It's a 33" tire and just slightly wider than stock, so im hoping I can still fit a spare. No biggie if I cant. I went with the rocky mountain ats. It was between that and the coopers. No Nittos in this size. If the tires look too narrow in person, then ill figure something else out.

I have an RRO lift as well. I intentionally purchased a Limited so I could avoid QL so my goal is to fit something a QL cant
i wish they made some real off road tires in this size... such as KM2's or Nitto Trail's...
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Unread 01-30-2014, 06:17 PM   #433
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Swapping 20" wheels for 18"?

Am in the process of purchasing a 2014 GC Limited. Had one picked out on the dealers lot with everything I wanted. Went in to do all the paperwork and it had been sold the day before. Dealer found another one at another dealer and we did the deal and they were going to get the truck from somebody else. Then that one gets sold. The sales rep calls around and tries to find another one with the color & options I had selected. Being the geek that I am, I found a few on jeep.com by looking at the window stickers and sent her the vins. She couldn't get any of the other dealers to give them up - either pending orders, sold, etc. Apparently it's more difficult to get a dealer to do a swap, I guess.

Anyway she just calls me and tells me that she looked up and saw a new one in the lot that had just come in. It has everything I want but also included the 20" wheels - which I don't want as they are a $1295 option. She tells me that her boss has agreed to swap the wheels with another one on the lot and I get what I want. Happy ending, right? Sounds like it.

My question to the dealer was whether anything needed to be programmed on the computer/odometer/etc. to tell it that is now has 18" wheels instead of the 20" that it left the factory with. Math tells me that there will be a difference between the diameter of the tires, but I stopped listening in math classes at about the 10th grade level... lol. Do I need to be concerned about the swap? Any potential downside? While I guess I could groove to the larger tires, it's mostly going to be a mom wagon and I just don't see the value of the larger tires.

Thoughts/comments appreciated.
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Unread 01-30-2014, 06:30 PM   #434
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Do you understand that the DIAMETER of the TIRE on the 18 inch wheels and the 20 inch wheels is roughly the same???

Take a look in this thread: http://www.jeepforum.com/forum/f309/...sizes-1158755/
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Unread 01-30-2014, 06:32 PM   #435
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Well, sure. Now I know that.
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