33x12.50 on a 7 inch rim ???

dirtracer81_2 · 12-31-2008, 11:46 PM

I just ordered a set of 33x12.50's because they were so much cheaper then a 10.50 but the problem occurs that the tire place recommended atleast an 8 inch rim. The guy working there told me they have put them on 7 inch rims and if I run a few psi lower then recommended they will wear fine. Im currently looking for a set of wheels now but I sure do love my mickey thompson classics. What do yall guys think?

fordboi415 · 01-01-2009, 12:02 AM

Lower psi might help a little but they are going to balloon out and definatly wear unevenly, its do able though

**Destroyer000** · 01-01-2009, 12:06 AM

for a 33 a 8inch MINIMUM.... i have 4 mounted on 8s are their wearing great.. i have my spare mounted on a 7 its definitely ballooned out

Mutant Pony · 01-01-2009, 12:11 AM

I mounted my 11.50s on 7" and they looked bad. I went to 8". I have mounted a lot of 12.50s on 8" though.

CopyKat · 01-01-2009, 10:10 AM

I was running a setup like that and I was using 25 psi and it was still too much as it wore out the center pretty quick. So you'd be looking at around 20-23 psi per tire to have them wear evenly. Also depends on the weight of the truck. Most time you may get away with the setup if you are rotating your tires often and checking for wear. Sometimes if you don't check often it may be too late and the tires could pick up a bad wear pattern and it's hard to correct.

F150hybred · 01-01-2009, 10:52 AM

By mounting a wide tire on a narrow rim, it will not only effect the wear of the tire... but also effect the handling too. When a wide tire is mounted on a narrow wheel, it sucks the side walls in causing the tire to "roll under" the vehicle more easily. With a wider wheel on a wide tire being used, the side walls of the tire are more perpendicular thus allowing the tire to support it's self better on a side load. An optimal wheel will actually stretch the sidewall out a little. With that being said, that idea of stretching the side wall out is great for a "road handling" idea... but not so great for off road applications where you want the tire to flex and absorb. If you go to the manufacturers web site, they will list an "optimal" wheel width for that specific tire. I would go with that spec..... but if you go with the 15 X 8" wheel, you should be in the ball park.

dirtracer81_2 · 01-01-2009, 11:07 PM

Ok thanks...
I guess im looking for some wheels if anyone has any for sale let me know.
My tires are supposed to be in tuesday and I start back to college the 12th so time is running short. Id run the tires i got now but tire defect and the belts are splitting in the back ones and still have a lot of tread left.

feellnfroggy · 01-02-2009, 09:25 AM

You never said what diameter, I got a set of stock ranger rims, I have a set of chrome 17 inch rims. (Possibly both are 7.5 and wont work for you, I'll have to measure.

dirtracer81_2 · 01-02-2009, 01:54 PM

I have 15 inch and thats what size i ordered.

12-31-2008, 11:46 PM	#1
dirtracer81_2 Junior Member Join Date: Dec 2008 Location: Rocky Gap, VA Year: 1998 Make: Ford Model: Ranger Engine: 4.0 Class: 4x4 body lift Used For: Everyday use Posts: 65 Rep Power: 9 iTrader: (0)	33x12.50 on a 7 inch rim ??? I just ordered a set of 33x12.50's because they were so much cheaper then a 10.50 but the problem occurs that the tire place recommended atleast an 8 inch rim. The guy working there told me they have put them on 7 inch rims and if I run a few psi lower then recommended they will wear fine. Im currently looking for a set of wheels now but I sure do love my mickey thompson classics. What do yall guys think?
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01-01-2009, 12:02 AM	#2
fordboi415 Member Join Date: Jan 2008 Location: rancho cucamonga california (socal) Year: 2001 Make: ford Model: ranger Engine: 3.0V6 Class: 2wd offroad Used For: haul dirt bikes, and play in the mud Posts: 702 Rep Power: 12 iTrader: (0)	Lower psi might help a little but they are going to balloon out and definatly wear unevenly, its do able though __________________ 2001 Ranger XLT 3.0L 2WD camburg 5.5 f31 deavers 33" maxxis buckshot 1059 pro comp wheels Fox Shox/Premeir Pioneer sound system http://www.cardomain.com/ride/2978855
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01-01-2009, 12:06 AM	#3
Destroyer000 January 2009 STOTM Winner Join Date: Aug 2007 Location: Plattsburgh, NY Year: 1995 1999 Make: Ford Ford Model: Ranger 4x4 Engine: 4.0. 4.0 Supercharged Class: 4x4 offroad, 4x4 dd Used For: work, dd, trail, race Posts: 1,504 Rep Power: 15 iTrader: (21)	for a 33 a 8inch MINIMUM.... i have 4 mounted on 8s are their wearing great.. i have my spare mounted on a 7 its definitely ballooned out __________________ 95 4x4 35 bfg 15x10 soft 8s custom front/rear bumpers,xrc8 winch explorer disc 4.56ls axle locked d44 EB axle sas power leather explorer seats, OHC, m1354, 04 SOHC 4.0 swap 00 4 door cab swap 99 4x4 avm upgrade, 32 bfg on dc1s, ohc, sport trac leather seats/console swapped to manual trans
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01-01-2009, 12:11 AM	#4
Mutant Pony Member Join Date: Aug 2007 Location: Hersey, Mi Year: 1977 Make: Ford Model: Pinto Engine: 2300 Class: 4x4 Used For: Mud racing/trails Posts: 1,755 Rep Power: 15 iTrader: (1)	I mounted my 11.50s on 7" and they looked bad. I went to 8". I have mounted a lot of 12.50s on 8" though. __________________ '84 Ranger, 351c,C6,208,EBsas."DeRanged Mudder" '86 Ranger, 3.0swap,coil rear suspension"Black Frog"
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01-01-2009, 10:10 AM	#5
CopyKat Member Join Date: Aug 2007 Location: Manitoba, Coldest place in Canada Year: 1987 Make: Ford Model: BroncoIV Engine: 4.0L Class: 4x4 Extreme Used For: DD/Wheeler Posts: 2,274 Rep Power: 0 iTrader: (1)	I was running a setup like that and I was using 25 psi and it was still too much as it wore out the center pretty quick. So you'd be looking at around 20-23 psi per tire to have them wear evenly. Also depends on the weight of the truck. Most time you may get away with the setup if you are rotating your tires often and checking for wear. Sometimes if you don't check often it may be too late and the tires could pick up a bad wear pattern and it's hard to correct.
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01-01-2009, 10:52 AM	#6
F150hybred Member Join Date: Aug 2007 Location: Arborg Manitoba Canada Year: 1994 Make: Ford Model: Explorer xlt 4.0 Auto 4wd 6" VMS Suspension lift brackets with Skyjacker 6" springs. 6" SOA on rear Engine: 4.0 Class: 4X4 Used For: Daily beatings and floggings. Posts: 543 Rep Power: 13 iTrader: (2)	By mounting a wide tire on a narrow rim, it will not only effect the wear of the tire... but also effect the handling too. When a wide tire is mounted on a narrow wheel, it sucks the side walls in causing the tire to "roll under" the vehicle more easily. With a wider wheel on a wide tire being used, the side walls of the tire are more perpendicular thus allowing the tire to support it's self better on a side load. An optimal wheel will actually stretch the sidewall out a little. With that being said, that idea of stretching the side wall out is great for a "road handling" idea... but not so great for off road applications where you want the tire to flex and absorb. If you go to the manufacturers web site, they will list an "optimal" wheel width for that specific tire. I would go with that spec..... but if you go with the 15 X 8" wheel, you should be in the ball park. __________________ Look, I'm not new at this. If I go off exploring by myself, it's because I think I know where I'm going and not just faking it. Last edited by F150hybred; 01-01-2009 at 02:03 PM. Reason: big friggin typo.
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01-01-2009, 11:07 PM	#7
dirtracer81_2 Junior Member Join Date: Dec 2008 Location: Rocky Gap, VA Year: 1998 Make: Ford Model: Ranger Engine: 4.0 Class: 4x4 body lift Used For: Everyday use Posts: 65 Rep Power: 9 iTrader: (0)	Ok thanks... I guess im looking for some wheels if anyone has any for sale let me know. My tires are supposed to be in tuesday and I start back to college the 12th so time is running short. Id run the tires i got now but tire defect and the belts are splitting in the back ones and still have a lot of tread left.
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01-02-2009, 09:25 AM	#8
feellnfroggy Member Join Date: Jun 2008 Location: Knoxville, TN Year: 1993 Make: Ford Model: Ranger Engine: 4.0L Class: 4x4 Used For: DD for right now. Posts: 4,461 Rep Power: 20 iTrader: (0)	You never said what diameter, I got a set of stock ranger rims, I have a set of chrome 17 inch rims. (Possibly both are 7.5 and wont work for you, I'll have to measure.
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01-02-2009, 01:54 PM	#9
dirtracer81_2 Junior Member Join Date: Dec 2008 Location: Rocky Gap, VA Year: 1998 Make: Ford Model: Ranger Engine: 4.0 Class: 4x4 body lift Used For: Everyday use Posts: 65 Rep Power: 9 iTrader: (0)	I have 15 inch and thats what size i ordered.
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