What HITS and what FITS

First off, I don't work for a Tire or Wheel company, so please take this for whatever its worth

There's an article in the Spring edition of 4X4 Garage magazine, and I'm passing on that information:

Hopefully others will also chime in with their results:

According to the article, for 2009 Ram 1500s:

31 x 10.5 will fit on a STOCK vehicle

33 x 12.5 will fit with a 2" Suspension Lift

35 x 12.5 will fit with a 4" Suspension Lift

37 x 12.5 will fit with a 6" Suspension Lift

Hope this helps

Part II

I'm not a tire salesman, nor do I play one on TV (I gotta stop using that line, some of you younger guys don't remember that commercial)

Anyway

According to the article, For 2009 Ram 2500/3500

30 x 9.50
31 x 10.50
32 x 11.50
33 x 12.50
From the article - all 4 of these will fit on a STOCK Vehicle

35 x 12.50 will fit with a 3" Suspension Lift

36 x 12.50 will fit with a 5" Suspension Lift

37 x 12.50 will fit with a 6" Suspension Lift and Fiberglass/Highline fenders

38.5 x 15 will fit with a 3" Body Lift and a 5" Suspension Lift

40 x 17 will fit with a 3" Body Lift and a 8" to 9" Suspension Lift

Comments or questions on this article can be directed to fourwheeleditor@sorc.com

Three other things to consider is your exact wheel size

Here are some very helpful charts from Stockton Wheel

Stock tires are 33" anyway, so 2inch lift is certainly not necessary.
Some guys have 35x12.50s on stock suspension with no problem.
37x12.50s on 4inch lift no problem(may need wheel spacers depending on offset).
Whoever wrote that article needs some schoolin'.

Originally Posted by akbunghole

Stock tires are 33" anyway, so 2inch lift is certainly not necessary.

Stock tires are not 12.5" wide though.

True. Although there are members on this site running 12.50s with no lift. Some with the stock wheels. Depending on how aggressive a sidewall the tire has, you may need wheel spacers; 1/4" seems to be a popular choice.

I'll be getting 305x55 on my stock rims with no lift and I'll post how it goes. 12.5" though by my measurements will hit the upper A-arms up front without some lift.

BTW bunghole, I was bummed about 3.55 gears too until I drove the same truck as mine with 3.92 and was surprised at how little difference there was - at least in terms of performance and feel. I didn't tow anything so maybe the difference is bigger then. On top of that, I'd swear the transmission overdrive was recalibrated for the 3.92 because on the highway, the revs were identical to mine for a given speed. I guess that is for CAFE requirements. I left the dealer lot perfectly satisfied with my 3.55 after that test drive.

I contacted daystar and superlift about their 2.5 leveling kits. They both said you can run 35x12.5 on factory wheels with no rub. Mine are on the way so I'll let you know.

35x12.5 R20 Toyo Open Country M/T's with 2.5 Daystar level

Ide like to know the other side of the spectrum IE lowerd trucks.... Like will my 24's fit with a 2/4 drop...currently im running a 2'' front spacer and Ive got wheel well for daysssss lol

Fact: 285/65/20's on stock wheels fits with room to spare if you have a leveling kit. Was told 295/60/20's is the biggest you can go without the use of wheel spacers as long as you have a 2.5" leveling kit.

I can fit 38x15.50's on my truck .6" BDS + 2" Revtek spacers.

Originally Posted by BigHorn 4 Life

I can fit 38x15.50's on my truck .6" BDS + 2" Revtek spacers.

Are you sure? Did you try it?

Did you try it on your 10" rims?

I want to add a 3" body lift with 38x15.50 on 20x12 rims with a -44 offset like RawRams here....http://www.dodgetalk.com/forums/showthread.php?t=309266

He has a 7" lift and a 3" body lift. His hits slightly...so I dont think I can fit them.

Originally Posted by mattyb777

Are you sure? Did you try it?

Did you try it on your 10" rims?

I want to add a 3" body lift with 38x15.50 on 20x12 rims with a -44 offset like RawRams here....http://www.dodgetalk.com/forums/showthread.php?t=309266

He has a 7" lift and a 3" body lift. His hits slightly...so I dont think I can fit them.

Well the -44 offset is what will kill you.If you go that much you will have to have a 3' body for sure.
I have not tride it no.I did roll one out to my truck and put it up beside my front tire.It will fit.I wouldn't do it till I have my 3" body on it.His is a 2x4 so our trucks set higher then his from the factory anyways.

I'm just in the process of installing a new set of 305/50R20's Nitto Terra Grapplers on stock 20" Chrome Sport Wheels.

The new Nitto tires measure 12.2" wide (on a 9" wheel), which is 1.2" wider than my stock 11" wide 275/60R20 Goodyear's.

If I divided that difference by 2, the new tire is 0.60" further outside the fender,
and 0.60" CLOSER to the top of the A Arm....that's currently 0.50" away.

Stock 275/60R20 Goodyear on 20" Sport Wheel = 1/2" (0.50") from upper A arm.


So I don't see how anyone can run a true 12.5" wide tire on a stock 20"x9" wheel UNLESS they add at least a 1/4" wheel spacer. Lifted or Not.
Picking up my 1/4" wheel spacers today...sure glad someone locally had them in stock

I'm not a 100% clear on IFS systems (Solid Axle Jeep Guy)
So can someone explain to me how adding a 2.5" spacer lift helps increase sidewall clearance here?

Pic would be helpful

Originally Posted by BigHorn 4 Life

...His is a 2x4 so our trucks set higher then his from the factory anyways.

"From the Factory" The stock height on a 1500 4x4 is only about 1/2" taller than the same model 2x4 (if tires/wheels are the same)


1500 CCSB 2x4/4x4 = 75.1" vs 75.7"

I liked the difference between the 4x2 and 4x4 on the 2 gen rams..even a 5 year old kid knew that a 4x4 was really a 4x4...

My tires are nowhere near my A arms.This is what a -20 offset does for it.

I guess I was wrong, time to eat a little crow...

New tire to add to the "What Fits" list...


Nitto Terra Grappler 305/50R20's (32.1" x 12.2")
Mounted today on Stock 20" Chrome 20"x9" Wheels

Looks same height as stock 275/60R20 when side-by-side
But...it sure looks a lot wider...and no more white letters



No lift, no level kit,
and to my surprise no wheel spacers needed
(even though I had a pair handy just in case)

about 1/4" to spare:







Great Tires!

You will like them.I had them on my Ford and loved them.