31/10.5/15 on stock blazer rim?
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31/10.5/15 on stock blazer rim? - 8/24/2006 11:02:51 PM
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Kellen
Posts: 120
Joined: 7/21/2006
From: Woodstock, Ontario, Canada
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pretty simple, will a 31/10.5/15 A/T or M/T fit on a stock blazer rim with no issues?
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RE: 31/10.5/15 on stock blazer rim? - 8/25/2006 12:37:37 AM
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flowmasta
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well check out my pics......no rubbing or anything....just make sure u remember there is like no space left in the wheelwell so keep that in mind before you start running over cars
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1996 chevrolet blazer 4.3L vortec V6(new)
Mods: 17' chrome zen rims
Goodyear RT/S and Goodrich radial long trail(31*10.5 r15)
Power Adder Intake
Flowmaster 40 muffler, 2 1/2' piping
Walker aftermarket cat
Pioneer Deck
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RE: 31/10.5/15 on stock blazer rim? - 8/25/2006 12:46:02 AM
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Hanr3
Wheels & Tire Moderator
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Yes that size tire will fit on the wheel no problem, fit under the truck is a diferent topic.
The general rule of thumb is 4.5". You can go up to 4.5" wider then the rim wideth. If your running a 15x7" factory wheel, the maximum tire wideth is 11.5". Tire diameter doesn't matter except to fit under the truck. 15x8" and 12.5" wide will fit on the rim.
A realy good source is the tire manufacture, they have recommended rim wideths for every tire they sell.
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"Some people spend an entire lifetime wondering if they made a difference.
The Marines don't have that problem."
-President Ronald Reagan
'87 S10-Blazer - SOLD
'93 S10-Blazer 4x4x4 - Sons DD, engine swap is done.
'00 S10-Blazer 4x4x4 - My
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RE: 31/10.5/15 on stock blazer rim? - 8/25/2006 1:10:26 AM
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nails5240
Posts: 73
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Yes they fit.
As long as you dont forget you have them on there. Big dips in the road and speed bumps can make them rub. It kinda bent out the metal on the fender a bit.
Nothin a rubber mallet cant fix though!
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2001 LS 4 Door 4.3L
31x10.5x15
http://www.jonescam.tv
helmet and onboard cameras
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RE: 31/10.5/15 on stock blazer rim? - 8/27/2006 9:13:50 PM
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Kellen
Posts: 120
Joined: 7/21/2006
From: Woodstock, Ontario, Canada
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If I do decide to get some wheels too, would I be better off with a 15x7 or a 15x8? Would the wider 15x8 make the rubbing issue worse?
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RE: 31/10.5/15 on stock blazer rim? - 8/28/2006 9:26:44 PM
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Kellen
Posts: 120
Joined: 7/21/2006
From: Woodstock, Ontario, Canada
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anyone? anyone? will an 15x8 inch rim with a 31/10.5 tire rub more than a 15x7 rim?
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RE: 31/10.5/15 on stock blazer rim? - 8/28/2006 10:20:03 PM
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Hanr3
Wheels & Tire Moderator
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Bueller? Bueller?........................................Bueller?
The answer to that question lies in the backspacing. IF, and that is a big IF, you can find an aftermarket rim with 5.5"-6" of backspacing, it shouldnt be too much of a problem with 30" tires. The issue with oversize tires and/or wider rims is where the tires are located in the fender well. Or rather out of the fender well. The most common place for the tire to rub is on the outside edge of the fender, especially in the back of the wheel well. After that the tire will rub the frame at full lock. With a rim that has less backspacing it pushes the tire out of the fender more. This means it will hit the back of the fender well.
31" tires will rub on a factory set-up. Like he pointed out it happens over bumps. Forget about using it off-road if your already rubbing on city streets. In my book, a 31" tire doesn't fit if it rubs. To make a 31" tire work, add a 2" suspension or body lift. Or be prepared to eat tires and sheetmetal.
The short answer YES!!!!!
< Message edited by Hanr3 -- 8/28/2006 10:21:13 PM >
_____________________________
"Some people spend an entire lifetime wondering if they made a difference.
The Marines don't have that problem."
-President Ronald Reagan
'87 S10-Blazer - SOLD
'93 S10-Blazer 4x4x4 - Sons DD, engine swap is done.
'00 S10-Blazer 4x4x4 - My
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RE: 31/10.5/15 on stock blazer rim? - 8/28/2006 10:29:00 PM
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Kellen
Posts: 120
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From: Woodstock, Ontario, Canada
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even with a 2 inch body lift, wont the tire still rub on the frame at full lock? or i guess with a body lift you could use less back spacing because the tire wont hit the back of the fender well. is that correct?
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RE: 31/10.5/15 on stock blazer rim? - 8/28/2006 11:25:32 PM
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nails5240
Posts: 73
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Having wheels with a different backspacing should solve the problem of rubbing the frame while turning.
But, it wont help at all with the tires hitting and tearing up the fender.
Click on my gallery to see what I mean.
Its been worse than that before but I always pound it straight with a rubber mallet. The tires also gets chunks cut out of them from the metal thats sticking out.
_____________________________
2001 LS 4 Door 4.3L
31x10.5x15
http://www.jonescam.tv
helmet and onboard cameras
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RE: 31/10.5/15 on stock blazer rim? - 8/28/2006 11:31:36 PM
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sledneck16
Posts: 300
Joined: 4/21/2006
From: North Bay, Ontario
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kellen---looks to me like that blazer in the pic has somewhere around 4 inch backspacing with 7 inch wide rims, doesnt look like it is but it could also be 6 inch backspacing with 9 inch rims.
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STOLEN 05 Blazer 2dr on 33" TRXUS (soon to be ressurrected)
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RE: 31/10.5/15 on stock blazer rim? - 8/28/2006 11:40:34 PM
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Hanr3
Wheels & Tire Moderator
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nails,
I have the same damage and its from a 30". I bottomed out hard while wheeling.
ITs hard to tell what size tires hes running or what backspacing. An educated guess would be in the 3.5"-4" backspacing on a 7" or 8" wide rim.
_____________________________
"Some people spend an entire lifetime wondering if they made a difference.
The Marines don't have that problem."
-President Ronald Reagan
'87 S10-Blazer - SOLD
'93 S10-Blazer 4x4x4 - Sons DD, engine swap is done.
'00 S10-Blazer 4x4x4 - My
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RE: 31/10.5/15 on stock blazer rim? - 8/28/2006 11:47:16 PM
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Kellen
Posts: 120
Joined: 7/21/2006
From: Woodstock, Ontario, Canada
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He's running 31/10.5/15.
Here's the guys page.
http://www.cardomain.com/ride/2289079
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RE: 31/10.5/15 on stock blazer rim? - 8/29/2006 7:08:55 AM
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swartlkk
Posts: 14306
Joined: 5/1/2005
From: Waterloo, NY
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And that Blazer also has a 2" body lift as well as 2" lift shackles on the rear and probably jacked up torsion bars up front...
< Message edited by swartlkk -- 8/29/2006 7:10:03 AM >
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2004 Rainier
1970 Chevelle - Resto
1974 K5 Blazer - Resto
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RE: 31/10.5/15 on stock blazer rim? - 8/29/2006 7:52:20 AM
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Kellen
Posts: 120
Joined: 7/21/2006
From: Woodstock, Ontario, Canada
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Yeah I read that.
< Message edited by Kellen -- 8/29/2006 7:54:19 AM >
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RE: 31/10.5/15 on stock blazer rim? - 8/29/2006 4:59:41 PM
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Kellen
Posts: 120
Joined: 7/21/2006
From: Woodstock, Ontario, Canada
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Well, after reading all your great advice, I think I will go with a 30/9.5 BFG MT.
What is the backspacing on the stock rims? Because I'm guessing even with just a 30 inch tire, If I go with too little backspace, it will still rub on the back off the wheel well, right? I do like the look of the tire sticking out a bit like the pic i posted. So basically, on a 15x7 or a 15x8 wheel, whats the least amount of backspace i can run without having a 30 inch tire rub on the read of the wheel well? Hanr, you could probably field this one :)
< Message edited by Kellen -- 8/29/2006 5:03:18 PM >
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RE: 31/10.5/15 on stock blazer rim? - 8/29/2006 5:04:12 PM
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Kellen
Posts: 120
Joined: 7/21/2006
From: Woodstock, Ontario, Canada
Status: offline
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PS thanks for all the great info, and answering my dumb questions, I'm a total truck 4x4 noob.
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RE: 31/10.5/15 on stock blazer rim? - 9/3/2006 12:08:40 AM
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mdnky
Posts: 5
Joined: 9/2/2006
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The Cragar Soft 8's are available in either 3.75" or 4.5" backspacing. It looks like the truck in that pic is running the 3.75" ones.
The stock 4wd rim 15x7 has 6" backspace, while 2wd versions have 3.75" backspace.
Now some bad news: Even people running the 5" TM lift with 31s on low backspace rims have problems with rubbing (on the fenders). The only way it works well is to keep the backspacing on your rims close to factory specs, so no smaller than 5". American Racing sells a few decent rims in that category, but selection is pretty slim now a days. If you want steel rims, give Eaton a call. They make some notoriously tuff steel rims for off-roading (DOT approved) and they always do them special order. So you should be able to request the proper backspacing that way. Expect to pay between $80 and $120 for 15x8s though.
I'm running 31x10.5 R15 Pro Comp xTerrains on 15x8 American Racing Slider rims with 5" of backspacing. That's with a PA 2" body lift, 2" rear shackles, and a slight crank (1/2" to 3/4") to the torsion bars. The shackles were to offset sagging rear springs and the torsion bar crank to offset the drag look caused by the shackles. So far so good, on pavement or off-pavement.
I don't have any pics of mine, but the link below is of someone else running pretty much the exact same setup as I do (lifts, tire size [though MTRs run slightly smaller than normal], and wheels).
http://www.s10extremist.org/georgesblazer.htm
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