Quick 31" Tire Question! - Page 2 - JeepForum.com
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post #16 of 25 Old 09-24-2009, 05:12 PM
spife7980
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Originally Posted by MyZJ98 View Post
The other thing I was thinking about, is I really like a Grand with a wider stance, be it wider tires, better backspacing, or wheel spacers. Now most likely, when I get the 31's, they're going to be on my stock 15" rims until I can pick up some cragars, but how wide are 31x9.50's going to be compared to the stock 245/75/r15? does the 75 mean 7.5" wide, in which case the 31's will be 2" wider on each side? Because if the 31's aren't much wider, I might pick up some spidertrax wheel spacers, because like I said, I think Grands look good with a wide stance. I had a soccer mom in a WJ pass me on the highway yesterday with some really wide tires (like 2" outside the fenders on each side) and it was gorgeous...(so was she!) haha. But anyways, what do you guys think on this idea?

Thanks
id get the BB and shocks before tires anyways. they arent that expensive. can be done for like $200

the .75 is a ratio.

the tire you mentioned is 245 millimeters wide. if you divide it by 25.4 that will get from metric millimeters to english inches for ease of understanding.

so 245/25.4=9.65 inches wide.

then the .75 is a ratio of that width that comes out to the hight of one side wall.

so 9.65x.75=7.24 inches of one side wall. double that for the height of both side walls combined

7.24x2=14.48" of total tire sidewall. add in the rim diameter

14.48+15=29.48" tall tire.

so a 245/75-15 tire is the equivalent of 29.28x9.65x15 in english.


-James
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post #17 of 25 Old 09-24-2009, 05:14 PM Thread Starter
MyZJ98
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Also, how noisy are M/Ts compared to A/Ts? i'm talking more specifically about the Definity Dakota M/Ts really, I'm looking at a set from pep boys, they're pretty reasonable in price, and have a nice meaty aggresive tread, which I know would be great for the kind of mud I play in. But being a DD, it's also gonna be on roads and highways often, and I don't want a really noisy tires like super swampers tend to be. BTW, anyone have any experience with the Definity Dakota M/Ts and how they perform in Snow? since winters coming in quickly...

Derek

'98 ZJ Laredo, 4.0L, 140K, NP242, stock. (Sold @205k)
'99 WJ Laredo, 4.7L, 175K, NP249, stock. (Sold @240k)
'97 ZJ Limited, 4.0L, 109K, NP249, stock.(Current)
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post #18 of 25 Old 09-24-2009, 05:17 PM Thread Starter
MyZJ98
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Originally Posted by spife7980 View Post
id get the BB and shocks before tires anyways. they arent that expensive. can be done for like $200

the .75 is a ratio.

the tire you mentioned is 245 millimeters wide. if you divide it by 25.4 that will get from metric millimeters to english inches for ease of understanding.

so 245/25.4=9.65 inches wide.

then the .75 is a ratio of that width that comes out to the hight of one side wall.

so 9.65x.75=7.24 inches of one side wall. double that for the height of both side walls combined

7.24x2=14.48" of total tire sidewall. add in the rim diameter

14.48+15=29.48" tall tire.

so a 245/75-15 tire is the equivalent of 29.28x9.65x15 in english.
WOW, awesome, thanks for the info. So I think the spidertrax spacers might be more for me for the stance I'm looking for. Anyone have a ZJ running 31's with spacers (spidertrax or otherwise)? Thanks guys

Derek

'98 ZJ Laredo, 4.0L, 140K, NP242, stock. (Sold @205k)
'99 WJ Laredo, 4.7L, 175K, NP249, stock. (Sold @240k)
'97 ZJ Limited, 4.0L, 109K, NP249, stock.(Current)
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post #19 of 25 Old 09-24-2009, 05:19 PM
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Originally Posted by MyZJ98 View Post
Yep it was:

ZJones, what is this stuff you used? it looks so clean and neat...
It's black door trim from autozone. The stuff is cheap though and has already fallen off.

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post #20 of 25 Old 09-24-2009, 05:25 PM Thread Starter
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It's black door trim from autozone. The stuff is cheap though and has already fallen off.
OH, thanks for the heads up then, because rubbing or not, I think I'd like still like to trim my fenders, because that door trim cleans it up nicely, and I think it would make my ZJ look a little taller too Maybe it would hold up better if you ran a line of some kind of glue inside the part that meets the fender. How does it hold on normally, just a press on/squeeze application?

Derek

'98 ZJ Laredo, 4.0L, 140K, NP242, stock. (Sold @205k)
'99 WJ Laredo, 4.7L, 175K, NP249, stock. (Sold @240k)
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post #21 of 25 Old 09-24-2009, 05:30 PM
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It has adhesive inside that's supposed to keep it on. I think the problem for me was the Arizona heat just beating on it all summer. You might have better luck with it.

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post #22 of 25 Old 09-24-2009, 05:35 PM Thread Starter
MyZJ98
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It has adhesive inside that's supposed to keep it on. I think the problem for me was the Arizona heat just beating on it all summer. You might have better luck with it.
That could have very well been. Adhesive tapes+heat=no likey. But here, especially in Winter, we get some pretty cold temps, which won't help much either, but I think if i just run a bead of Gorilla Glue or something along with the adhesive, it should probably hold alright.

Derek

'98 ZJ Laredo, 4.0L, 140K, NP242, stock. (Sold @205k)
'99 WJ Laredo, 4.7L, 175K, NP249, stock. (Sold @240k)
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post #23 of 25 Old 09-24-2009, 07:24 PM
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Originally Posted by MyZJ98 View Post
Also, how noisy are M/Ts compared to A/Ts? i'm talking more specifically about the Definity Dakota M/Ts really, I'm looking at a set from pep boys, they're pretty reasonable in price, and have a nice meaty aggresive tread, which I know would be great for the kind of mud I play in. But being a DD, it's also gonna be on roads and highways often, and I don't want a really noisy tires like super swampers tend to be. BTW, anyone have any experience with the Definity Dakota M/Ts and how they perform in Snow? since winters coming in quickly...

i have no experience with those tires but i like the tread design and would imagine w/ all that siping and staggered lugs that tire would be reasonably quiet for a mud terrain.

1993 Jeep ZJ. 4.0
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post #24 of 25 Old 09-24-2009, 07:41 PM Thread Starter
MyZJ98
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Thats what I hoped to hear!

Derek

'98 ZJ Laredo, 4.0L, 140K, NP242, stock. (Sold @205k)
'99 WJ Laredo, 4.7L, 175K, NP249, stock. (Sold @240k)
'97 ZJ Limited, 4.0L, 109K, NP249, stock.(Current)
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post #25 of 25 Old 09-26-2009, 04:35 PM
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