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Old 11-22-2002, 07:09 PM
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Default Big tires on stock 2500 Ram

Anyone have a feel for the largest tire you can put on a stock 2003 2500 Ram? Looks like stock tires are about 32 inch dia. Think a 34 would fit (315-70-17)?

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Old 11-22-2002, 08:01 PM
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Default Re: Big tires on stock 2500 Ram

33x12.5R16.5's rub some on something. Either the control arms or the edges of the fenders, depending on backspacing. 285/75R16's (33x11.25R16) and 255/85R16's (tall 33x10R16) fit with minimal, if any, rubbing. 305/70R16's (33x12R16) may or may not rub, depending on backspacing of the rims, width of the rims, how you wheel, if you wheel, blah blah blah.
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Old 11-22-2002, 08:18 PM
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Default Re: Big tires on stock 2500 Ram

The Ram 2500 comes with 265-70-17 tires - about 32 inch dia. I'm looking at 315-70-17 - about 34 inch dia.

My F150 went from 255-70-16 to 285-75-16 with no problem. Thought a Dodge would take a bigger tire too.

Going up an inch in radius shouldn't hit anything as long as the suspension isn't crunched too much??? [img]images/graemlins/cool.gif[/img]
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Old 11-23-2002, 06:53 AM
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Default Re: Big tires on stock 2500 Ram

Thats a great question, I have a 2003 2500 quadcab on order and in around 2 weeks it should be here. I haven't looked at what tire could fit yet but I will probaly put in a 2" coil spacer for some added room. I here the lifts will be pricy for our new trucks according to rocky mountain suspensions, like $3000! I will have a minimum of a 33 but probaly a 35" will be on... [img]images/graemlins/cool.gif[/img]
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Old 11-23-2002, 09:14 AM
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Default Re: Big tires on stock 2500 Ram

My Red QC Laramie Hemi is on for 1 Dec build date. Hope our brothers to the south are better than the old union workers that came to work drunk or hungover on Mondays, if they came at all. [img]images/graemlins/cool.gif[/img]
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Old 11-23-2002, 09:33 AM
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Default Re: Big tires on stock 2500 Ram

I had 285/75/16's on my Dodge Ram 1500 4x4 Stock. They rubbed a little if you cranked the wheels as far as they go. They rubbed against the arms a little. I believe the 2500 sits a little bit higher than the 1500, so they should fit fine. The are equal to 32.8 x 11.2 x 16 tires. So you may be able to do 33 x 11.5, but probably not 33 x 12.5. Hard to say.
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Old 11-23-2002, 10:51 AM
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Default Re: Big tires on stock 2500 Ram

Thanks. Truck is scheduled to build 1 Dec. I'll just wait and see what looks good. I know the guys at America's Tires here in town and they'll put whatever I want on it to see if it fits. Only way to find out is to try it. I like the BFG All Terrain 315-70-17's. That's what I'm aiming for.

Guess I'll have to get a stepladder for my wife to get in. [img]images/graemlins/cool.gif[/img]
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Old 11-24-2002, 03:03 PM
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Default Re: Big tires on stock 2500 Ram

Just realized yours is the newer body style. Which basically makes any of the advice from us that have given you advice based on the 94-02 body style trucks, "uninformed". I still doubt a tire that size would fit without rubbing often, but first thing I'd do was compare the sizes of the wheel well openings on our older trucks and the newer style trucks. Also the location of various steering and suspension components. That would give you some idea of what would work.
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Old 11-24-2002, 04:15 PM
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Default Re: Big tires on stock 2500 Ram

I measured my F150 wheel wells-37 inches. I measured the Dodge 2500 wheel wells-38 inches. I put 33's (285-75-16)on my Ford with NO interference anywhere. Just hoping Dodge took the time to figure some of us will want bigger tires. Doubt if the engine will lug with 4.10 gears. [img]images/graemlins/cool.gif[/img]
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Old 12-04-2002, 11:12 AM
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Default Re: Big tires on stock 2500 Ram

I replied to another post stating that there is a new 1500 truck in our neighborhood wearing 35x12.50R17s with no lift and has been running around for months now. It my opinion it's a really tight fit and they are too big, but it does not appear to give them any trouble while running up and down the highway. Based on that I would think the 33x12.50R17 would fit fine on the 1500, at least for street driving (flexing off-road is a whole other story but the IFS doesn't move much). Since the 2500 series trucks sit several inches higher I'm sure you could get away with 33's and probably 35's (again, at least on the street) since the wheelwells are identical, though double-check for clearance when turning on the control arms. For lift kits on the 2500 and 3500 series trucks, I don't see why they would be much more expensive then the current ones since the suspension is pretty much identical with a few tweaks and adjustments. On the other hand, the 1500 series lifts will be much more expensive because they use IFS.
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