Will 285 70r17 Fit Jeep Wrangler
If you own a Jeep Wrangler, you know how much tire size can affect performance and appearance. The tire size 285 70R17 is popular for off-road enthusiasts and daily drivers.
But will this size really fit your Wrangler without problems? Let’s break down the fitment, what you need to consider, and how it compares to other tire sizes.
What Does 285 70r17 Mean?
Understanding tire numbers is key. The 285 refers to the tire’s width in millimeters. The 70 means the sidewall height is 70% of the width, and R17 means the tire fits a 17-inch rim. This tire is about 32.7 inches in diameter and 11.2 inches wide.
Factory Wrangler Tire Sizes
Most Jeep Wranglers come from the factory with tires between 29 and 32 inches in diameter. For example, the popular Wrangler JL Sport uses 245/75R17 (about 31.5 inches tall), while Rubicon trims come with 285/70R17 (32.7 inches).
Factory Tire Size Comparison
| Wrangler Model | Stock Tire Size | Diameter (inches) |
|---|---|---|
| Sport | 245/75R17 | 31.5 |
| Sahara | 255/70R18 | 32.1 |
| Rubicon | 285/70R17 | 32.7 |
If your Wrangler is a Rubicon, you already have 285/70R17 tires from the factory.
Will 285 70r17 Fit Without Modifications?
For most Jeep Wranglers, 285/70R17 will fit with little or no modifications. Here’s what you should check:
- Stock Suspension: On JL and JK models, these tires often fit stock rims without rubbing. Older models may need small changes.
- Wheel Backspacing: Factory wheels work, but aftermarket wheels with less backspacing (like 4.5″) give more clearance.
- Fender Clearance: Off-roading or full suspension flex can cause rubbing. Light wheeling is usually fine, but rock crawling may need a lift.
- Lift Kits: Adding a 1-2 inch lift guarantees better clearance, especially with aftermarket bumpers.
Real-world Example
A 2018 Wrangler JL Sport with 285/70R17 tires on stock wheels usually fits without lift or spacers for street driving. If you add heavy off-road use or want more wheel articulation, a small lift is smart.
How 285 70r17 Compares To Other Popular Sizes
Choosing the right tire is about more than just fit. Here’s how 285/70R17 compares to common Wrangler sizes:
| Tire Size | Diameter (inches) | Width (inches) | Fitment Notes |
|---|---|---|---|
| 255/75R17 | 32.1 | 10.0 | Fits all, no mods |
| 285/70R17 | 32.7 | 11.2 | Stock JL Rubicon, slight rub possible on others |
| 315/70R17 | 34.4 | 12.4 | Lift needed |
Pros And Cons Of 285 70r17 On Jeep Wrangler
Pros
- Better Traction: Wider footprint helps in mud, snow, and sand.
- Aggressive Look: Fills wheel wells nicely without looking too big.
- No Major Mods: Fits newer Wranglers without big changes.
Cons
- Possible Rubbing: May touch fender liners at full turn or flex.
- Speedometer Error: Slightly changes speedometer reading (about 2%).
- Lower MPG: Wider tires can reduce fuel economy a bit.
Common Mistakes When Upgrading
- Ignoring Backspacing: Using wheels with too much backspacing can cause rubbing.
- Skipping Alignment: Always get an alignment after changing tire size.
- Forgetting Recalibration: Not recalibrating the speedometer can lead to wrong speed readings.
- Overlooking Spare Tire: Upgrade the spare so all five tires match in size.
How To Make 285 70r17 Fit Perfectly
If you want zero issues, here’s what helps:
- Add a 1.5-inch lift kit for best clearance.
- Use wheels with 4.5-inch backspacing to avoid rubbing.
- Trim inner fender liners if needed.
- Upgrade your spare tire to match.
Real-world Feedback
Many Wrangler owners report that 285/70R17 fits well on JL and JK models for street and mild off-road use. More aggressive off-roaders often add a small lift for peace of mind. If you tow heavy loads or rock crawl, a larger lift or aftermarket fender flares might be smart.
Cost And Tire Choices
The 285/70R17 size is widely available from brands like BFGoodrich, Goodyear, and Falken. Prices range from $200 to $350 per tire, depending on tread and brand.
Popular 285 70r17 Tire Choices
- BFGoodrich KO2: Great for all-terrain use.
- Goodyear Wrangler Duratrac: Good off-road and winter traction.
- Falken Wildpeak AT3W: Balanced for road and trail.
- Nitto Ridge Grappler: Aggressive style, good grip.
Speedometer And Odometer Impact
Larger tires like 285/70R17 will show a slightly slower speed on your speedometer. For example, when you’re going 60 mph, your dash might show 58 mph.
You can recalibrate using a programmer or at a dealership. This helps keep your mileage and speed accurate.
When 285 70r17 Is Not The Best Choice
If you have a base model Wrangler with older suspension, or you do extreme off-roading, you may need a lift or aftermarket wheels. People who want maximum fuel efficiency or city driving only may prefer smaller sizes.
Frequently Asked Questions
