Biggest Tire You Can Fit on a Stock Ram 1500

Dodge Ram 1500 is a full-size pickup truck known for its extensive and robust engines, spacious cabin, and high towing and hauling features, making this vehicle an excellent choice for those who need a reliable and solid pickup truck every day.

While some owners of Ram 1500 stick to a stock tire size, others are willing to mount slightly or much larger tires possible without resorting to any side modifications to their vehicles.

This raises the question: what is the biggest tire you can fit on a stock Ram 1500?

According to the manufacturer, tire sizes for stock Dodge Ram 1500 vary from 27.7 to  31.91 inches.

A 33-inch tire is the largest size that can go on the vast majority of stock Ram 1500 trucks. Speaking about 2015-2018 Ram 1500 vehicles, they can accommodate 33-inch tires with no issues of rubbing or trimming.

It is also possible to fit a bigger 34-inch tire on a stock Ram 1500. However, while some Dodge owners don’t have to make any additional changes, others may have to resort to minor or significant trimming to avoid rubbing off the fenders. 

Stock Ram 1500 can accommodate even a 35-inch tire. You can choose between 35×12.5 and 35.6×12.4 tire sizes. These variations of 35-inch tires have shown their applicability on stock Ram 1500 trucks manufactured in 2004, 2007, and 2008 with no further changes to the vehicle.

Also, while observing various Ram 1500 custom projects, our attention has been drawn to one owner of a custom-built 2012 Dodge Ram 1500 who has installed a 37-inch tire (37×12.5 ) on his truck.

While researching various projects of numerous custom builds made by Ram 1500 enthusiasts, we`ve clustered all possible for now tire and rim sizes. Additionally, we`ve made a handy table with the biggest tire sizes for every year.

We only provide tire sizes that do not cause any rubbing, require no fender or plastic trimming, and do not require any leveling or lift kits.

What size tire can I fit on a stock Ram 1500?

Tire sizes for a stock Ram 1500 can have many variations. Year of truck production, cabin trim, rim size it runs – all these factors determine the size or sizes Dodge truck can accommodate. 

In most cases, a fully-stocked Dodge Ram 1500 can run 33-35 inch tires without any intrusion to the suspension or body, meaning that you won’t have to afford additional leveling or lift kits or make trimming for the tire fitment.

Usually, tire sizes that fit stock Ram 1500 range from 30 (245/70R17) to 33 inches (275/60R20), depending on the model and trim level of the vehicle. If you are wondering about more specific numbers, below you can observe all the gens of stock Ram`s 1500 and tire sizes options they can fit. 

Mentioned sizes here do not rub fenders and do not require you to make any trimming or placing spacers on your truck to fit slightly (or much) bigger tires.

Dodge Ram 1500 First Generation (1994-2001): with standard suspension setup, the largest tire sizes that should suit these truck generations have the following measures for 17-inch rims: 285/70R17 (32.7×11.2 inches), for 18-inch rims: 285/65R18 (32.5×11.2 inches), for 20-inch rims: 275/60R20 (33×10.8 inches).

Dodge Ram 1500 Second Generation (2002-2008): the maximum tire sizes that these trucks’ factory suspension can accommodate are the next: for 17-inch rims: 315/70R17 (34.4×12.4 inches), for 18-inch rims: 305/65R18 (33.6×12.2 inches), for 20-inch rims: 305/55R20 (33.4×12.2 inches).

Dodge Ram 1500 Third Generation (2009-2018): the most oversized tires that these truck generations can handle with factory suspension have these parameters: for 17-inch rims: 315/70R17 (34.4×12.4 inches), for 18-inch rims: 305/65R18 (33.6×12.2 inches), for 20-inch rims: 275/60R20 (33×10.8 inches),

Dodge Ram 1500 Fourth Generation (2019-Present): these Ram truck generations can accommodate such tire sizes as: for 17-inch rims: 285/70R17 (32.7×11.2 inches), for 18-inch rims: 275/65R18 (32.1×10.8 inches), for 20-inch rims: 275/55R20 (32.9x 10.8 inches).

Fitting a bigger than the 34-inch tire on a stock Dodge truck is also possible. In most cases, Dodge owners have to resort to minor or significant trimming of the plastic or metal parts of the truck. While some Ram 1500 owners may face wheel wells rubbing, others may not – it depends on the year of truck production and tire setup.

Let’s consider several examples of 35-inch tires mounted by owners on their Ram 1500 without any issues.

Stock 2004 Ram 1500 can run a 35.6×12.4 tire (315/75R17) on a 17×9 inch rim without any leveling/lift kits or spacers. As the owner claims, he has no rubbing or scrubbing of the fenders and runs a 35.6×12.4 tire with no concern.

Stock Dodge Ram 1500, produced in 2007 can handle a 35×12.5 tire on a 17×9 wheel without any modifications to the truck`s body or suspension. The tire doesn’t rub and scrub, meaning no additional trimming is required for proper tire fitment.

The same 35×12.5 tire size can be mounted on a stock 2008 Ram 1500 with a 20×10 rim. After installation of the tire on this gen of Ram 1500, one won’t face rubbing issues meaning that there is no necessity to perform any trimming works

One owner of a stock 2012 Dodge Ram 1500 has mounted a 37×12.5 tire on his truck. Interestingly, he runs these tires on a stock suspension without additional mods or spacers.

Moreover, the 37-inch tires on this Ram 1500 Gen don`t rub or scrub the truck`s body or suspension components. Speaking about the largest tires setup of this Ram 1500, it looks like 37×12.5 tires on 20×10 rims or 320/70R20.

What size tires come on stock Ram 1500 20–inch wheels?

The tire size for a stock Dodge Ram 1500 on a 20-inch wheel can be different due to the specific year and trim of the truck. However, Ram`s 1500 20-inch rim has several tire size options. Among them: 275/55R20, 275/60R20, and 275/65R20.

What are the biggest tires that can go on a stock Ram 1500 with 18-inch rims?

The most considerable tire size on a stock Ram 1500 equipped with 18-inch wheels depends on your truck generation. In most cases, a 33-inch tire is the largest size that can be mounted on stock Ram`s 1500 18-inch rim without changing suspension, rubbing, and trimming issues.

The tallest tires you can put on stock Ram 1500 with 17-inch rims

The tallest tires you can install on your stock Ram 1500 with 17-inch rims without any leveling or lift kits is 33 inches (or slightly bigger than 33). However, it is also possible to fit a 35-inch tire on a 17-inch rim with no side modifications to the truck.

What Are the Biggest Tire Alternatives for My Ram 1500?

The largest tire setups for various rim diameters that Ram 1500 enthusiasts fitted on their customized Dodge trucks are shown in the table below.

Based on the year the truck model was produced, all tire and rim sizes in this chart allow you to mount the biggest tire with the stock suspension.

What size tires are best for stock Ram 1500?

Larger tire upgrades often call for additional truck changes. To fit somewhat larger tires, it may be necessary to buy additional leveling or lift kits and trimming of the truck`s body.

However, it is possible to fit different tire sizes on your stock Dodge Ram 1500 vehicle.

The sizes of tires for a stock Ram 1500  can range from 215/75R15 to 275/55R20, depending on the trim level and year the truck you have.

We’ve compiled a detailed and informational table about each generation of the Dodge Ram 1500 truck stock models and the tire sizes they can accommodate to make selecting tire sizes easier for you. 

Can you fit 33-inch tires on a stock Ram 1500?

Sure, you can. A 33-inch tire is the best and optimal size for a stock Ram 1500. Moreover, you won’t have to trim the truck`s body or resort to any suspension modifications to accommodate this tire size.

Will 35-inch tires fit on a stock Ram 1500?

Yes, it is possible to install 35-inch tires on a stock Ram 1500. However, in most cases, a 35-inch tire will either rub inside the fenders or require minor to major metal trimming (or both rubbing and metal trimming). Only stock 2004-2010 Dodge Ram 1500 can run 35-inch tires without mods.