Largest Tires on a Ford Ranger (Biggest Tires, No lift)
The largest 17-inch size tire you can fit on a stock suspension without causing body scrub is roughly 31.6. That is if you intend to venture off-road. For everyday driving, you could increase the wheel size to 18 inches and fit a 31.6 equivalent.
Sizes that will fit are:
- 265/70/17 (31.6 inches) off-road friendly (recommended)
- 265/75/16 (31.6 inches) off-road friendly (recommended)
- 285/70/17 (32.7 inches) on-road only & scrubs interior wheel arch needs a lift for off-road
- 265/65/18 (31.6 inches) on-road only
The stock 2019 Ford Ranger tires are 255/65/R17 and 255/70/R16, which is roughly 30.1 inches.
If you upgrade to a 265/70/17 it only equates to a roughly +5% difference in diameter and a 4% increase in width which is still well within the factory specifications.
No additional strain will be placed on any other stock suspension and drivetrain components.
Experiment with the tire comparison calculator below to see the different size options and how they affect your speedometer accuracy.
285/70/17 (32.7”) and Stock Ford Ranger Suspension
If you want to squeeze a set of 33s on the ranger without any suspension modifications there are 2 important things to consider first.
- Backspacing/Wheel Offset
- Crash Bars/Beams
So right off the bat, yes it can be done, but not without a few minor modifications first.
The first problem you’ll have is the backspacing or lack thereof for 33s on stock rims.
That is a very important factor to take into consideration with any tire upgrade, backspacing.
The Second Issue is the Ford Ranger Crash Bars
The crash bars protrude and the bigger 285/70/17 tire makes contact so this will need to be removed/modified first so as not to damage the new tires.
Take note that off-road travel and trails are strictly prohibited with the 285s until you do a suspension upgrade first.
Factory Stock Suspension
All of the above-mentioned sizes are assuming you are running a factory stock suspension with no additional upgrades.
If you upgrade the suspension to fit a body lift or change the rim to something with a more negative offset which affects your backspacing the figures will change allowing you to fit a bigger and wider tire like a 285 and even a 305.
The truth is, a good suspension upgrade is exactly what your Ford Ranger needs!
2019 Ford Ranger on 33-Inch Tires
So as mentioned previously, fitting 33’’ tires to the new 2019 Ford Ranger isn’t much of a big deal.
Again, if you intend on venturing off-road and still want the maximum articulation the ranger has to offer then you might have to do a bit more.
The stock suspension and rim combination don’t allow for a 33” to bolt straight on.
You need a (3/8”) spacer, otherwise, it will rub against the spindle.
upgrading your wheels to something with a more negative offset to improve the backspacing
Alternatively upgrading your wheels to something with a more negative offset to improve the backspacing will help.
In that instance, a 275/70/17 will fit snugly inside that wheel well.
So to make this setup work on factory stock wheels you will need the following:
- 2-inch leveling kit
- 1/4 inch spacers in the front
The stance will look good and there will be zero body scrub.
For anything bigger than that you will need to upgrade the suspension first to increase ride height allowing taller, wider tires to fit without any dramas.
Also, a rim with a more negative offset will allow you to fit 33”+ tires.
What is the Offset of a Ford Ranger Wheel?
The offset of a standard Ford Ranger 2019 is 55mm.
If you want to improve your wheel offset, to fit wider tires, you can insert a wheel spacer to improve the clearance from the steering knuckle and allow you to upgrade to 33” tire sizes.
2019 Ford Ranger Bolt Pattern
The new Ford Rangers bolt pattern is:
| Ford Ranger Bolt Pattern | PCD 6×139.7 (6×5.5) |
Largest Tires on 2019 + Ford Ranger Raptor with a Stock Suspension
The stock tires on a Ranger Raptor are 32.7-inches.
Ford Ranger 2019 2.0 Raptor
- 285/65R17 OE
- 285/70R17 OE
- 265/60R18 110T
The wheel arches on a Raptor are bigger than a stock Ranger PX2 and allow for bigger 33” tires without much hassle.
You could safely add a 305 or even a 315 tire in the Raptor with little drama.
- The frame design incorporates new geometry for the large suspension
- The Raptor DNA boasts increased track and wheel travel
- The suspension setup is highly sophisticated and can accommodate a bigger tire more easily.
The Ranger Raptor has an innovative new coil-over rear suspension that uses a Watt’s link setup with a solid rear axle.
This provides superior lateral control off-road while also helping improve ride and handling.
Final Thoughts
If you would like to play around with tire configurations the below link is a cool tool you could use.
https://tiresize.com/comparison/
Consider tire size’s impact on fuel economy and speedometer accuracy. Upgrade suspension before larger tires for off-road ventures.
Heavier tires add unsprung weight, potentially reducing fuel efficiency and wheel torque.
