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Newb here need tire advice. Wanting to swap out mudders.

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Old 10-07-2011 | 05:46 PM
  #1  
sbierman's Avatar
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From: Collierville, TN
Default Newb here need tire advice. Wanting to swap out mudders.

I currently have BFG Mud-Terrain T/A LT305/60 R18.

I daily drive this thing and never really get off road. I want to find a replacement tire that keeps a similar size/look, but more pavement friendly. I want to do some traveling in it, but I don't want to do it with these tires.

Would anyone recommend a tire that I could swap out with?

I've attached an image of the jeep. I the way the tires look, so I hope there is something I can get that looks similar, but is quieter and more road-trip ready.

thanks.
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Old 10-07-2011 | 06:30 PM
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w squared's Avatar
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What you want is an all-terrain tire. Mud tires are loud and ride rough. I don't object to the noise level or ride of my Toyo's....but other folks tell me that they're really loud. If you're finding that the KM2's are not what you want, then I doubt that you'll find any MT that will make you happy.

Goodyear Duratracs would probably be a good choice for you. Maybe Toyo M-55's - if they have the size you want. Those are tough tires, well suited to lots of highway miles - but they're not cheap. Maybe the Cooper Discoverer S/T?

The other option would be the BFG All Terrain T/A...but that doesn't offer the same "look" as a mud tire.
Old 10-07-2011 | 06:46 PM
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I just put a set of duratracs on a month ago for the same reasons you say. They looks tough and ride super quiet. much better for the jk.
Old 10-07-2011 | 07:40 PM
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Thanks for all the help, guys.

I'm trying to find a tire that matches my measurements, but there don't seem to be a lot in this specific size. My rims are 18", so I know I can't change that. The 60 is the width of the rim isn't it? So I can't change that either. So I'm guessing the 305 part is the height of the tire. How much play can I get with that? Can I use like a 295 or something?

Thanks, sorry for the newb questions.
Old 10-07-2011 | 07:53 PM
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305 is the width of the tire. 60 is the ratio of the sidewall compared to the section width. I believe it is the percentage.

305 = 305mm

When you increase the "60" which is the aspect ratio in increments of five, the tire height increases by about 1".

Thus, 305/60R18 is a 32.4" tire and a 305/65R18 is a 33.4" tire. 305/70R18 is a 34.4" tire.

Most people will round these up and call them a 33", 34", and 35" tire respectively.

Conversely, decreasing the aspect ratio in increments of five reduces tire height by about 1".

Also, when the section width, or the "big" number goes up in increments of about ten, the tire size will also go up in height about 1/2".

So, the following sizes should be similar or at least within 1".

315/60R18 ~ 32.9"
305/60R18 ~ 33.4"
295/65R18 ~ 33.1"
285/65R18 ~ 32.6"
285/70R18 ~ 33.8"

Kinda make sense?

Google "tire calculator" I'm a fan of tirerack for research as you can get the specs for each tire broken down into inches.

Last edited by CerOf; 10-07-2011 at 08:14 PM.
Old 10-07-2011 | 07:58 PM
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Regarding size, you are correct that you can't change the 18" wheel diameter without replacing those, too. The 305 refers to the width of the tire (305mm). The 60 is the aspect ratio, so it is calculated as a ratio of the width and overall height of the tire. In other words, a 305/60 would have less sidewall than a 305/75. This is about the extent of my 'tire sizing' knowledge, but when you look for replacements, you'll want to maintain your current overall tire height. With that being said, if you like the width, then I would guess an aspect ratio of 55 - 65 would be pretty close to the same height. Good luck! I agree with you, your Jeep looks good with that width of tire!




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