15x12 wides - S-10 Forum
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post #1 of 17 Old 04-23-2019, 05:54 PM Thread Starter
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15x12 wides

I have a 2003 S10 Crew Cab 4x4. I was curious about tire and rim fitment. I want to run 12 wides. My truck currently has a 2.5 in. lift, sitting on 31x10.50 with stock 15 in. rims. What back spacing should I be looking for in order to be able to run 12 wides?

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post #2 of 17 Old 04-23-2019, 05:58 PM
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Re: 15x12 wides

Along with what size tires? 12" wide wheel is a tall order. Get a straight edge and a ruler and make wheels and tires out of cardboard.

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post #3 of 17 Old 04-23-2019, 06:12 PM
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Re: 15x12 wides

I have to agree, what tires are you going to run on 12" rims?

Your current 31x10.5 will fit a 9 inch rim.

A 35x12.5 will fit a 11 inch rim at the absolute widest. Not that I think you'll be able to stuff something that big under an S10.

The only tire I can find on tirerack.com that will fit a 15x12 wheel is a Pirelli P-Zero Autocross/track special that's technically a "street tire" with a 140 treadwear rating. It's available up to 345/35R15 which would fit a 12 inch wide wheel. I can also find you drag slicks and road racing slicks that will fit, but if you've got all terrain/off road tires now, and you're lifted 2 inches, I doubt you're heading in this direction.

I can't even find agricultural tractor or heavy equipment tires that will fit a 15x12.

Or is this a plan to just drive on the bare wheels? Who needs tires anyway?

If you can't light up the tires in the first three gears, you need more power.
If you can light up the tires in the first three gears, you need better tires.
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post #4 of 17 Old 04-23-2019, 06:13 PM Thread Starter
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Quote:
Originally Posted by Rhotpursuit View Post
Along with what size tires? 12" wide wheel is a tall order. Get a straight edge and a ruler and make wheels and tires out of cardboard.
I'm thinking either 30s or 31s. I want to stretch the tires. I'm trying to go for something like the front s10. I believe the tires are 30s.
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post #5 of 17 Old 04-23-2019, 06:19 PM
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Re: 15x12 wides

lol/thread
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post #6 of 17 Old 04-23-2019, 07:02 PM
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Re: 15x12 wides

I tend not to support unsafe vehicle practices...I'm out.
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post #7 of 17 Old 04-23-2019, 07:04 PM
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Re: 15x12 wides

Dat stance lyfe brah!




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post #8 of 17 Old 04-23-2019, 07:18 PM
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Re: 15x12 wides

Why did I think I was safe from this on the S10 forum?

Quote:
Originally Posted by thatredneck View Post
I'm thinking either 30s or 31s. I want to stretch the tires. I'm trying to go for something like the front s10. I believe the tires are 30s.



Good luck with that. I'm not going to get into an extended discussion on this. "Stretched" tires are a really bad idea™.
  • Stretched tires suffer a lot of sidewall damage and get replaced often when the sidewalls get damaged. It's a geometry problem. When you hit a pothole or a rut and the sidewalls aren't vertical, the tire squashes to the side and the sidewall hits the road obstacle. Off road tires that are stretched will get a lot more sidewall damage.
  • Stretched tires have very little load carrying capacity. They run hotter from more tread deflection, have increased rolling resistance because of that and get lousy gas mileage because of that. They also ride very badly and don't corner particularly well either.
  • Stretched tires wear out quickly at the shoulders because they are effectively underinflated for the load. The sidewall can't support the load at the angles, and there isn't enough air pressure to press the center part of the tread to get it in contact with the road or ground. So you wear out the outer half of the shoulder blocks because that's the only part of the tread face carrying any load at all. They become dangerous in wet weather because they wear out so quickly at the shoulders.
I really hope you change your mind on this before wasting a lot of money. If you go forward, good luck with it. I hope you only ruin a bunch of tires and take the hit in the wallet. I sincerely hope you don't wreck your rig and hurt anyone else in the accident.

If you can't light up the tires in the first three gears, you need more power.
If you can light up the tires in the first three gears, you need better tires.
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post #9 of 17 Old 04-23-2019, 07:35 PM
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Re: 15x12 wides

I cant imagine the load on those wheel bearings with that much wheel offset
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post #10 of 17 Old 04-23-2019, 10:09 PM
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Re: 15x12 wides

Hell, I'll answer the question for the hell of it. With that kind of width you're going to want to stay close to factory backspacing which is 6". Any more you'll likely be hitting suspension and steering components. I understand this look is pretty desirable in some areas....I'm not sure why. Hope you like driving a dirty truck and/or washing the truck constantly.

Will there be a set of truck nuts and a plethora of poorly aimed LED lighting as well?
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post #11 of 17 Old 04-23-2019, 10:21 PM
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Re: 15x12 wides

Probably a sticker on the rear window with something like, "My mirrors pull out, I don't"




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post #12 of 17 Old 04-23-2019, 10:28 PM
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Re: 15x12 wides

Mickey Thompson used to make offroad tires in a 31x12.50x15 that would work on that size rim. I'm just not sure anyone currently still makes the superwide tires anymore. Check into the off-road tires like TSL Super Swampers or Boggers. We ran 31x15.50x15 GoodYear trencher tires on 15x15 Jackman racing wheels on our 1970 Jeep CJ5 back in the day. The best option would be to straight axle the frontend with springs over the axles to run the bigger sizes of tires now available.

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post #13 of 17 Old 04-23-2019, 11:16 PM
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Re: 15x12 wides

He wants tires that are a bunch more narrow than the wheels.


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post #14 of 17 Old 04-24-2019, 12:13 AM
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Re: 15x12 wides

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Will there be a set of truck nuts and a plethora of poorly aimed LED lighting as well?
Don't forget painting every possible interior trim piece in a fluorescent color or two.
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post #15 of 17 Old 04-24-2019, 02:56 PM
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Re: 15x12 wides

Eh… its his ticket and his wallet. Most places I know of specifically do not permit tires to extend past fenders. I don't know of a place that specifically permits it, except for classic vehicles that came that way, hotrods etc.

Most LEO's won't bother with a small amount, some use a 1 lug rule but that's just them being nice usually. Once its beyond that though, its usually just a matter of time.

I've noticed this craze more lately, it seems every time a new fad starts, it gets stamped out and another fad starts a year or two later. For awhile there it was rolling coal, but you don't see that as much anymore, except for guys who obviously don't keep up with whats cool.

I have thought to myself its not a bad idea if someone decides to change lanes without checking their blindspot… No doubt a tire messes the side of a car up far more than the car messes the tire up... Though I'd be worried about monster trucking it up over their hood and into a ditch or something, like you see in open wheel racing...
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post #16 of 17 Old 04-24-2019, 10:18 PM
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Re: 15x12 wides

Most cops down south won't bat an eye at things like that.


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post #17 of 17 Old 04-25-2019, 12:40 AM
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Re: 15x12 wides

That's true. You should see some of the crap running around here.













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