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Unread 10-17-2003, 12:20 AM   #1
04Willys
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biggest tire size for 15x7 wheel?

I tried searching and couldn't find anything. My Willys TJ came with tiny tires and I am in serious need of bigger ones. I want to put on 30" x 9.5" tires on my 15" x 7" wheels. I am pretty sure this will work but I would like a definative answer. I don't want to go wider than 9.5" due to the snow in Colorado, but what are the largest tires (diameter and width) that can go safely on a 15x7 wheel?

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Unread 10-17-2003, 12:54 AM   #2
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Quote:
Originally Posted by 04Willys
I tried searching and couldn't find anything. My Willys TJ came with tiny tires and I am in serious need of bigger ones. I want to put on 30" x 9.5" tires on my 15" x 7" wheels. I am pretty sure this will work but I would like a definative answer. I don't want to go wider than 9.5" due to the snow in Colorado, but what are the largest tires (diameter and width) that can go safely on a 15x7 wheel?
I'm not sure what the largest tire you can safely fit is...but I know people run 33's on those stock 15" x 7" rims...I wouldn't...but people do.

30" X 9.5" will run on those rims with no problems...you could even go to 31"....
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Unread 10-17-2003, 09:09 AM   #3
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The biggest size tire I can recommend for a 15x7 wheel is 32x11.50... but for a factory 15x7 wheel, there would be too much backspacing for a 32x11.50 so while the tire would fit fine, it would be positioned too close to the suspension. So really, a 30x10.50 is the biggest tire size if that 15x7 wheel is a factory Jeep wheel.
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Unread 10-17-2003, 10:49 AM   #4
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I am running 30 x 9.5 tires on the stock 15 x 7 rims and they fit fine. I would suggest going to 31's though. I wish I had.
I have the Dueler A/T REVO tires and love them. Super quiet on the road and still tough off road. They get really high marks on tirerack.com... link
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Unread 01-19-2004, 09:43 PM   #5
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Will 30x9.5s or even the 31x9.5s work well with a 99 SE's stock gearing (auto tranny)? By "well" I mean very little change in highway cruising. I still want good mileage but I am looking for a larger than stock tire.

Will
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Unread 02-24-2004, 09:15 AM   #6
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What about the swamper ltb's 34x10.50?? I have a 4" suspension lift, what do you think the pros and cons are of this size tire? Don't want to buy new wheels right now.
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Unread 02-24-2004, 09:42 AM   #7
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I'm running 35/12.50X15 on 7" rims. The rims aren't stock though.
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Unread 05-17-2004, 03:53 PM   #8
jsol95
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Quote:
Originally Posted by 04Willys
I tried searching and couldn't find anything. My Willys TJ came with tiny tires and I am in serious need of bigger ones. I want to put on 30" x 9.5" tires on my 15" x 7" wheels. I am pretty sure this will work but I would like a definative answer. I don't want to go wider than 9.5" due to the snow in Colorado, but what are the largest tires (diameter and width) that can go safely on a 15x7 wheel?
Had the same question...bought my Willys about 4 months ago and finally found this site!!! Let me know what you ended up with....some people dont understand the reason for the bigger tire stock rim...for me its the fact that the rims are part of the willys package, that make it the willys(painted green) Im not lookin for all out 4X4, but something that would look good with a 4" lift would be nice!

jsol95@yahoo.com is my email...please send pics or whatever about how it turned out! thanks!
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Unread 05-17-2004, 04:41 PM   #9
doorocks
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Im running 33/10.50 works just great. But like Jerry said. Your backspacing will be too tight.
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Unread 05-17-2004, 05:15 PM   #10
Dr Gutiemouth
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im getting 32" 11.5 bfgoodrich all terrains...
on stock rims that are 15 x 7 ...think rubbing will be a big issue? can i adjust anything to help me out if it is?
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Unread 05-18-2004, 12:18 AM   #11
6Speed
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Quote:
Originally Posted by Jerry Bransford
The biggest size tire I can recommend for a 15x7 wheel is 32x11.50... but for a factory 15x7 wheel, there would be too much backspacing for a 32x11.50 so while the tire would fit fine, it would be positioned too close to the suspension. So really, a 30x10.50 is the biggest tire size if that 15x7 wheel is a factory Jeep wheel.

I want to run some 33x12.50, or possibly some 33x11.50's, but I don't want them to stick out past the fender flairs.

Basically I like this look. http://www.dillermedia.com/jeep_pic1.jpg

I also like this one. http://members.cox.net/rimtorim2003/after.jpg Ohh and those are the same wheels I have. So how can I run 33's with the stock rims, or what backspacing should I order, if I get some 15x7 black steelies?

Thanks!
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Unread 05-18-2004, 07:34 AM   #12
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I run 31 x 10.5's on the stock 15 x 7 steelies with no rubbing.
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Unread 05-18-2004, 11:27 AM   #13
dzp
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An option you have to keep your existing rims and run 32 or 33's would be wheel spacers. For 33's to fit well, then you will need about 3 1/2" - 4" of Back Spacing. If your rims are now 5 1/2" BS, then you will need 2" spacers. With a skinny tire, then you may only need 1" spacers. Be sure to get the good ones that bolt to your hub, then the wheel bolts to it. DO NOT get a set that comes with a spacer and longer studs.

Another option (better IMO) would be to buy some new steel wheels with 4" BS and have them powdercoated with the olive drab to match your Jeep.
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Unread 05-18-2004, 01:34 PM   #14
jsol95
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Quote:
Originally Posted by dzp
An option you have to keep your existing rims and run 32 or 33's would be wheel spacers. For 33's to fit well, then you will need about 3 1/2" - 4" of Back Spacing. If your rims are now 5 1/2" BS, then you will need 2" spacers. With a skinny tire, then you may only need 1" spacers. Be sure to get the good ones that bolt to your hub, then the wheel bolts to it. DO NOT get a set that comes with a spacer and longer studs.

Another option (better IMO) would be to buy some new steel wheels with 4" BS and have them powdercoated with the olive drab to match your Jeep.
Thats the other option I thought about.....however if I can keep the original I will lol....for now just would like a better tire on it....something more apt for beaching and some light trails that come across my path.....but was also nice to read that once I get a 4" lift, I could still use stock tires

but if anything the cheapo black rims are good too....bling dosnt work well with this jeep
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Unread 05-18-2004, 04:12 PM   #15
FSJeepin'
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I agree with jsol95 about the spacers (if your going to use them) I don't like them but you gotta do what you gotta do. As for wheel to tire size you can safely go 3" to 3.5" wider than the wheels, any more than that and you can run into some problems with the tire bead staying on the wheel.
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