I have been trying the biggest tire i can fit on my stock 1996 Dodge Ram 4x4 ext. cab. The truck seems to sit pretty high already and I looked on here and it says the max tire size that will fit is 285/75/16. A couple of my friends said I can fit 33" tires on it the way it is...is that true? any help/suggestions would be appreciated.

 

285/75/16 are 33" or really close

 

just get a 2 inch leveling kit for like 100 bucks..then you'll have no problem at all with 33's

 

If you get the 2 inch spacer for the front coils I believe you can fit the 295/75/16s no problem. If anyone knows different please let us know. The 2inch spacer for the front is cheap and easy to install. It is usally called a LEVELING kit because the front sits a little lower than the rear. Try the search feature on the site. GL...........

 

I have 276/60R20s on mine (That's the 3rd Gen 4x4 stockers). They are a 34" tire.

I have a 2 wheel drive with no lift of any sort. When I turn the wheel all the way, it rubs the plastic inner fender on the front, and it doesn't rub much...Other than that, there are no issues, so 33's will be no problem.

Also, if I'm correct, weren't the 4x4s higher from the factory then the 2wds? If that's the case, even the 34"s would fit...

 

32.5 inch
So that might actually be considered a 33 if you round up. I don't really know how all that stuff works exactly.

 

I used to run BFG 315's on mine. Looked great but could not turn the front wheels all the way.

 

if you have factory 3.55 gears, then unless you regear to 4.10 or 4.56 you will not like the pig that your truck will turn into with tires bigger than 32-33".
here's a really nice tool. check out all the options in the left pane for tires, gears, etc.
http://www.4lo.com/calc/geartable.htm

 

285's are usually considered a 33" tire. I like the 305's better but they are the same height only wider. I'm not sure if you will be able to fit them stock though. On my 01 with a 3" lift, 305's, and my 16x10 wheels they rub at full lock when you hit a bump at the same time. I like them but am not sure how they would work on a stock truck. I would be fine with mine though if I had differn't rims. I think. My wheels just stick out fairly far so make them rub on the plastic fender lining.

 

I'm not sure how you can say that they are usually considered a 33" tire.

Ok, let's look at my tires... 275/60R20

The 275 is the width in mm.

The 60 is the heigth as a percentage of the width, also in mm...

R20 is the rim diameter in inches.

So, that means that my tires are 275mm wide and 165mm (60% of 275) in heigth.

Now, since a tire is a circle, that means that you need to double this heigth measurement to accomodate the tire that is "below" and "above" the rim when you are measuring the diameter.

In other words:: 165mm + 20" + 165mm = Total Tire Diameter

There are 2.54 cm per inch, so that's 25.4mm per inch.

165mm * 2 = 330mm

330mm / 25.4mm per inch = 12.99" (We'll call it 13)

13" of rubberplus 20" of steel equals a total of 33"



I should correct myself, earlier I said I thought I had 34" wheels. I was thinking of the new, larger all-terrain wheels I just bought but have yet to put on the truck...

With these calculations you can also determine how your speedometer will be affected... Since for some reason you can't program the computer on mine, I have to just compensate for the difference. These 33" wheels are 12.5% larger than the factory wheels, so that means that the speedo is off by 12.5% as well. What it calculates to to is 62.5mph on the gauge equaling 70mph on the road and the 102 in my picture equaling 115...