Backspacing!! Will bigger tires fit!!

***Prowelder*** · 11-11-2009, 11:13 PM

Hey,

How do you measure backspacing with the wheel/tires still mounted up???

I'm wanting to run some 35x12.50, but not sure if they will fit without rubbing!!! I have, a what I believe to be a 2.5" leveling kit, and Pacer wheels. All installed by a previous owner! It has 285/75R16 on there not, but I want bigger!!!!!

Here are some pictures to help:

Thanks,
Winslow

__________________
Black Magic! 2001 Ram 2500 QCSB, 4x4, 2-cycle oil, 54 Block!!, NV 4500, 3.55 gears, B&W Hitch, Autometer Ultra-Light: Boost, EGT, and Fuel Pressure, Valair 13" Kevlar/Ceramic 3400 lb Single Disc Clutch, Valair Upgraded Hydros, Edge Comp (untapped), Jkidd 150 hp matched sticks, 3" Pipe, Custom Built Intake Horn, BHAF with 7075 T-6 Heat Shield and Red OuterWare, AFE Torque Tube, Air Dog II DF-165 with custom cover, PSC Pump and Brace, Jkidd Sport Headlights, Tunnel Ram on the way, and Building High Idle Fooler Setup!

Mocho · 11-11-2009, 11:37 PM

It would be pretty tough if not impossible considering the size of your rims. You need to measure the distance between the rim mounting surface to the outside of the rim. You are better off finding out how big your current tires are, and coming the size of the new ones and see how much room you have. I would say you would clear them just fine.

__________________
2004.5 3500 Quad Cab 4x4 CTD Laramie 6 spd std A few mods

skalve85 · 11-12-2009, 08:04 AM

I'm no expert but from the look, it seems you have 16x8 rims and probably a 4.50in backspacing or -12mm offset whatever way you look at it. I would go to the brands website and look them up. They normally dont have to many options for Dodge and backspacing.

I have the same setup, 16x8 rims, 2 in leveling kit and I run 35x12.50r16 if that helps. Where things start to rub is if you have 16x10 rims.

__________________
99 Dodge 2500 4x4 191,000mi, 150hp FBD sticks, 62/71/14, ARP Studs @ 140ft lbs, FASS 150/150, Drag Comp, Suncoast tranny, ATS TripleLok, Diprocal Gauges, AirRaid Filter, Amsoil Bypass, BD Steering Brace, 4inch straight pipe, 35 on 20s 1/4= 13.79

Ohio Coal Rollers

***Prowelder*** · 11-12-2009, 08:42 AM

Hey,

Thanks!!

Pacer list one with +12 offset, 4.97 backspacing; and one with -6 offset, 4.25. And for 16x10 is list -32 offset, 4.25 backspacing. I need to try and measure to see if they are 16x8 or 16x10.

Thanks,
Winslow

__________________
Black Magic! 2001 Ram 2500 QCSB, 4x4, 2-cycle oil, 54 Block!!, NV 4500, 3.55 gears, B&W Hitch, Autometer Ultra-Light: Boost, EGT, and Fuel Pressure, Valair 13" Kevlar/Ceramic 3400 lb Single Disc Clutch, Valair Upgraded Hydros, Edge Comp (untapped), Jkidd 150 hp matched sticks, 3" Pipe, Custom Built Intake Horn, BHAF with 7075 T-6 Heat Shield and Red OuterWare, AFE Torque Tube, Air Dog II DF-165 with custom cover, PSC Pump and Brace, Jkidd Sport Headlights, Tunnel Ram on the way, and Building High Idle Fooler Setup!

11-11-2009, 11:13 PM	#1 (permalink)
*Prowelder* Whatever Works!!! Join Date: Jul 2009 Location: Burden, Kansas Posts: 3,388 Thanks: 166 Thanked 208 Times in 187 Posts Prowelder's Truck Pics	Backspacing!! Will bigger tires fit!! Hey, How do you measure backspacing with the wheel/tires still mounted up??? I'm wanting to run some 35x12.50, but not sure if they will fit without rubbing!!! I have, a what I believe to be a 2.5" leveling kit, and Pacer wheels. All installed by a previous owner! It has 285/75R16 on there not, but I want bigger!!!!! Here are some pictures to help: Thanks, Winslow __________________ Black Magic! 2001 Ram 2500 QCSB, 4x4, 2-cycle oil, 54 Block!!, NV 4500, 3.55 gears, B&W Hitch, Autometer Ultra-Light: Boost, EGT, and Fuel Pressure, Valair 13" Kevlar/Ceramic 3400 lb Single Disc Clutch, Valair Upgraded Hydros, Edge Comp (untapped), Jkidd 150 hp matched sticks, 3" Pipe, Custom Built Intake Horn, BHAF with 7075 T-6 Heat Shield and Red OuterWare, AFE Torque Tube, Air Dog II DF-165 with custom cover, PSC Pump and Brace, Jkidd Sport Headlights, Tunnel Ram on the way, and Building High Idle Fooler Setup!

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11-11-2009, 11:37 PM	#2 (permalink)
Mocho Diesel Freak Join Date: Mar 2009 Location: Edmonton, AB Posts: 602 Thanks: 7 Thanked 21 Times in 19 Posts Mocho's Truck Pics	It would be pretty tough if not impossible considering the size of your rims. You need to measure the distance between the rim mounting surface to the outside of the rim. You are better off finding out how big your current tires are, and coming the size of the new ones and see how much room you have. I would say you would clear them just fine. __________________ 2004.5 3500 Quad Cab 4x4 CTD Laramie 6 spd std A few mods

11-12-2009, 08:04 AM	#3 (permalink)
skalve85 Cummins Fanatic Join Date: Jan 2008 Location: Nashport, OH/Columbia Heights, MN Posts: 124 Thanks: 9 Thanked 5 Times in 5 Posts skalve85's Truck Pics	I'm no expert but from the look, it seems you have 16x8 rims and probably a 4.50in backspacing or -12mm offset whatever way you look at it. I would go to the brands website and look them up. They normally dont have to many options for Dodge and backspacing. I have the same setup, 16x8 rims, 2 in leveling kit and I run 35x12.50r16 if that helps. Where things start to rub is if you have 16x10 rims. __________________ 99 Dodge 2500 4x4 191,000mi, 150hp FBD sticks, 62/71/14, ARP Studs @ 140ft lbs, FASS 150/150, Drag Comp, Suncoast tranny, ATS TripleLok, Diprocal Gauges, AirRaid Filter, Amsoil Bypass, BD Steering Brace, 4inch straight pipe, 35 on 20s 1/4= 13.79 Ohio Coal Rollers

11-12-2009, 08:42 AM	#4 (permalink)
*Prowelder* Whatever Works!!! Join Date: Jul 2009 Location: Burden, Kansas Posts: 3,388 Thanks: 166 Thanked 208 Times in 187 Posts Prowelder's Truck Pics	Hey, Thanks!! Pacer list one with +12 offset, 4.97 backspacing; and one with -6 offset, 4.25. And for 16x10 is list -32 offset, 4.25 backspacing. I need to try and measure to see if they are 16x8 or 16x10. Thanks, Winslow __________________ Black Magic! 2001 Ram 2500 QCSB, 4x4, 2-cycle oil, 54 Block!!, NV 4500, 3.55 gears, B&W Hitch, Autometer Ultra-Light: Boost, EGT, and Fuel Pressure, Valair 13" Kevlar/Ceramic 3400 lb Single Disc Clutch, Valair Upgraded Hydros, Edge Comp (untapped), Jkidd 150 hp matched sticks, 3" Pipe, Custom Built Intake Horn, BHAF with 7075 T-6 Heat Shield and Red OuterWare, AFE Torque Tube, Air Dog II DF-165 with custom cover, PSC Pump and Brace, Jkidd Sport Headlights, Tunnel Ram on the way, and Building High Idle Fooler Setup!