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73-87 Chevy _ GMC Trucks => Wheels & Tires => Topic started by: Elpresidente on April 22, 2012, 07:28:15 pm

Title: 31in tires on a 2wd
Post by: Elpresidente on April 22, 2012, 07:28:15 pm
Currently have stock 235/75R15, considering a set of 31x10.5x15's. Is there any issue with the front tires rubbing if the truck is at stock height? I know the backs have tons of room.

Also if anyone has pictures of a 2wd w/ 31's that would be cool to see how mine might look. its an '82 with a long box.
Title: Re: 31in tires on a 2wd
Post by: Da67goatman on April 22, 2012, 07:47:36 pm
Even with 250k miles on half ton springs, they fit fine on 15x7 rally wheels.  Here's a pic of the front on a suburban.
Title: Re: 31in tires on a 2wd
Post by: csdineley on April 22, 2012, 07:57:38 pm
Here's mine, not quite what you asked for. But mine is a 3/4 ton with 245/75r16 tires. Which if I did it right would be around 30X9.6-16. And stock ride height.
Title: Re: 31in tires on a 2wd
Post by: c10kid13 on May 31, 2012, 07:21:43 pm
i dont have a good picture but my brother recently purchased an 86 gmc c1500. it is stock height with 31x10.50s on the stock rally wheel and they do not rub at all
Title: Re: 31in tires on a 2wd
Post by: 454Man on May 31, 2012, 09:17:29 pm
I have a 82 long wheel base with 31s on 15x8 wheels ill snap some tomorrow morning. :)
Title: Re: 31in tires on a 2wd
Post by: sbx22 on May 31, 2012, 09:58:11 pm
I had 31x10.5x15's on back in the day. See pic.
(http://i462.photobucket.com/albums/qq344/sbx22/IMG_3679.jpg)
(http://i462.photobucket.com/albums/qq344/sbx22/IMG_3664.jpg)
(http://i462.photobucket.com/albums/qq344/sbx22/IMG_3663.jpg)
No rubbing, no issues.
Title: Re: 31in tires on a 2wd
Post by: 78 Chevyrado on May 31, 2012, 11:20:23 pm
You can fit 32x11.50s without a problem, so 31's aren't any problem either

HEre's my 77 with 31's

(http://i160.photobucket.com/albums/t195/wes2880/77%20C10/LeftFront2.jpg)
(http://i160.photobucket.com/albums/t195/wes2880/77%20C10/012_10.jpg)
Title: Re: 31in tires on a 2wd
Post by: 1987ScottsdaleGuy on September 07, 2012, 12:11:47 pm
i have a 1987 half ton 2wd scottsdale and 31's do NOT fit, even when i took the running boards off.  Look on your door that sticker probably says 225/75/r15 so getting a nice set of 235/75/r15 with 100% will look great and is even a hair bigger so you should be happy with that.

After reading this post i went out and bought 4 31's off a guy i knew and when i got home they didnt fit... Well they "fit" , but were way too big in the front. Not a good idea man.
Title: Re: 31in tires on a 2wd
Post by: Da67goatman on September 07, 2012, 01:51:39 pm
That means your truck has something amuck.  Could be your springs are shot/broken, shocks, frame damage ect, but something is not right, they do indeed fit on a half ton.
Title: Re: 31in tires on a 2wd
Post by: 78 Chevyrado on September 07, 2012, 08:23:35 pm
That means your truck has something amuck.  Could be your springs are shot/broken, shocks, frame damage ect, but something is not right, they do indeed fit on a half ton.

1987ScottsdaleGuy:  Maybe the fromt springs are sagging or the suspensions off from front to back.  I put them on my 87, and it was the lightest duty truck you could get  and the lowest stock height, and 32's fit fine.  On that same 87, 33's up front only scrubbed when turning at an angle like fron a driveway going down hill to the roadway.  Normal flat driving, 33's fit alright.

Also, could be your fenders / cab are out of square from the frame.  I've seen that happen before.






Title: Re: 31in tires on a 2wd
Post by: 1987ScottsdaleGuy on September 12, 2012, 12:40:13 pm
More than likely my springs are just worn out and i need new ones
Title: Re: 31in tires on a 2wd
Post by: werewolfx13 on September 30, 2012, 10:50:40 pm
I've got 31 x 10.50  Cooper Discoverer STT on 15x9" wheels and they fit fine on my '83 c10, and the drivers fender is still crumpled in from the front a bit from a wreck it was in prior to when I bought it.
Title: Re: 31in tires on a 2wd
Post by: 1979C20 on October 01, 2012, 05:47:31 am
My c20 clears 285/75/r16 (32.8 x 11.2) with no rubs or problems. Even offroad. Allthough the taller tires make my front suspension bottom out on bumpstops over washboard terrain. And my suburban clears 315/75\r16's (34.6 x 12.4) with a 4 inch lift with no rubs or problems even when fully flexed.
Title: Re: 31in tires on a 2wd
Post by: lindsdavid on October 04, 2012, 10:39:01 pm
32x11.5xr15 on 15x9 Ar rims
(http://i69.photobucket.com/albums/i56/stirador/rides/chevrolet009.jpg)
Title: Re: 31in tires on a 2wd
Post by: Elpresidente on October 08, 2012, 09:10:23 am
Looks like the fronts raised a bit from stock height?
Title: Re: 31in tires on a 2wd
Post by: 79brent on October 12, 2012, 04:12:08 pm
This is my 79 c10 with 31" bfg at. They fit and look nice.
Title: Re: 31in tires on a 2wd
Post by: Mike85Silverado on October 18, 2012, 10:02:08 pm
Just replaced my stock wheels and tires with some AR 15" rims i found on craigslist for $75 and put some 31x10.5/r15 Kumho's on my stock height 2wd. Looks waaay better and rides nice. No rubbing at all, even when i turn all the way in one direction.  Love them
Title: Re: 31in tires on a 2wd
Post by: 79brent on October 20, 2012, 08:29:42 pm
Big change in ride when I did mine too. The only time they will really rub is if you go over dips/bumps to fast and they will hit the top of your inner fenders.
Title: Re: 31in tires on a 2wd
Post by: winky on October 20, 2012, 10:38:45 pm
I had a brown 77 like yours and I also had high traction 31's on it I think they look good on these trucks
Title: Re: 31in tires on a 2wd
Post by: 78 Chevyrado on October 23, 2012, 04:43:50 pm
My 31's on my 77 never hit or scrubbed, and I used to off roading and mudding in it.  Maybe it will if you have old or really saggy springs. or light duty springs.   My truck had the HD 1/2 ton springs on it.
Title: Re: 31in tires on a 2wd
Post by: 79brent on October 25, 2012, 08:08:51 pm
Ive never seen another brown one like mine, I love the color though. My springs are original so I imagine i do have some sagging going on. All my bushings are shot on my frontend now too.
Title: Re: 31in tires on a 2wd
Post by: kalbert on January 24, 2013, 10:45:22 am
31" All-Terrains on 8" wheels, they are a bit big for my taste but they are round and hold air.

(http://www.hickorytech.net/~kylek/images/pickup/2012-06-03_001.jpg)
Title: Re: 31in tires on a 2wd
Post by: 1979C20 on January 26, 2013, 01:57:42 am
This is my 79 c10 with 31" bfg at. They fit and look nice.

Do you have an RPO option sheet in your glovebox or on the fender? If so, can you see what color code your paint is? It looks like the original color of my 79 which was "Camel".
Title: Re: 31in tires on a 2wd
Post by: galong05 on January 26, 2013, 09:12:14 pm
295R17 with 3" body lift. 
Title: Re: 31in tires on a 2wd
Post by: 454Man on January 26, 2013, 09:43:30 pm
Looks good!
Title: Re: 31in tires on a 2wd
Post by: 79brent on May 08, 2013, 10:51:42 am
Yes I do 1979c20. I have the original build sheet to that I found in the springs underneath the bench seat. I will give it a look and check out the codes later on after work. I believe its a light camel. Dont know why they call it light though because its a nice deeper color on the inside. 8)
Title: Re: 31in tires on a 2wd
Post by: 79brent on May 09, 2013, 10:01:56 pm
Ok got the code for ya, option no. 62w xcc1 camel custom vi and 65L light camel solid.
Title: Re: 31in tires on a 2wd
Post by: lindsdavid on October 29, 2013, 03:34:47 am
Looks like the fronts raised a bit from stock height?

nope!all stock...actually im trying to figure in how to lift it 2" at least so could accomodate 33's