SUV / Crossover

255/55R19 Tire Size

The 255/55R19 is a crossover and SUV fitment that balances everyday comfort with the versatility owners expect from a do-it-all family vehicle. Sitting in the 30-inch tire category, it sits in a popular middle ground: enough stature for a confident road presence and modest trail capability, yet restrained enough to keep steering effort, fuel use, and cabin noise in check. The sidewall height preserves enough compliance for driveway transitions and light gravel while maintaining crossover-friendly handling. Drivers often land here when they want a moderate footprint that handles school runs and road trips cleanly, then still feels capable on seasonal camping trips or forest-service roads. It is less specialized than a dedicated off-road build, but more adaptable than a pure commuter tire.

Vehicles Using This Size

255/55R19 is a luxury SUV OEM fitment on premium crossovers that pair large-diameter wheels with enough sidewall for composed highway manners.

BMW

X5

xDrive40i

2019–2024

Mercedes-Benz

GLE

350

2020–2024

Audi

Q7

Premium

2017–2024

Volvo

XC90

T6 Momentum

2016–2024

Lexus

RX

350

2016–2022

Will 255/55R19 Fit My SUV?

  • Crossovers with factory plus-size packages usually accept this diameter; always test fitment on your exact wheel width and offset.
  • Check inner-fender and strut clearance when moving from a shorter OEM size on the same wheel diameter.
  • Compared with 245/60R18, expect roughly +0.23 in ground clearance change and +1.6% speedometer difference.
  • Confirm TPMS, spare compatibility, and winter wheel clearance if you run a separate snow set.

Real-World Impact

Understand how this tire size changes vehicle behavior beyond the raw specifications.

Compared with 245/60R18

Ride Height

+0.23 in

What this means

Changes how high the vehicle sits and how confidently you clear obstacles on rough terrain.

Speedometer Impact

+1.6%

What this means

Your dash-indicated speed will differ from true ground speed at highway velocities.

Highway RPM

671 revs/mi

What this means

-11 revs/mi vs 245/60R18 — larger tires turn fewer times per mile at the same speed.

Fuel Economy

-1.6% revs

What this means

Rolling resistance and tire mass changes can shift miles-per-gallon on long highway runs.

Ride Comfort

-0.27 in sidewall

What this means

More sidewall compliance absorbs impacts; shorter sidewalls trade comfort for sharper response.

Off-Road Capability

Trail-ready

What this means

Adds modest trail confidence for gravel roads and seasonal adventure use without dedicated off-road compromises.

In detail

  • 255/55R19 increases ground clearance by approximately 0.23 in compared with 245/60R18.
  • This wider tread (10.04 in vs 9.65 in) may provide additional traction but could increase steering effort.
  • Sidewall height changes by -0.27 in (5.52 in vs 5.79 in) — firmer response, less flex.
  • At 60 mph indicated on 245/60R18, 255/55R19 reads true speed of 61.0 mph (+1.6% error).

Quick Take

Equivalent Sizes

Within ±3% overall diameter — speedometer-safe alternatives.

Compare Tire Sizes

Compare 255/55R19 against common alternative tire sizes.

Quick Comparison

Diameter, width, and speedometer error at 60 mph indicated.

FAQ

Is 255/55R19 worth upgrading to?

For SUV owners who want more all-weather confidence and light trail capability, 255/55R19 is worth considering when it stays within your vehicle's fitment limits. The upgrade pays off on snowy approaches, gravel campground roads, and long family road trips where stability matters. It is harder to justify if you only drive smooth suburban pavement and want the softest possible ride and lowest fuel bill. Verify plus-size clearance on your exact crossover before buying — not every platform tolerates diameter changes equally.

Does 255/55R19 hurt fuel economy?

Upsizing usually costs a small amount of fuel economy — often 1–2 mpg for SUV fitments — because of added weight and rolling resistance. All-weather and all-terrain patterns typically use more fuel than pure highway touring compounds. The change is gradual; you will notice it over a few tanks rather than immediately. Proper inflation and alignment matter more after upsizing than many owners expect. If efficiency is your primary goal, stay with a low-resistance touring tire in the OEM size class.

Does 255/55R19 ride better than stock tires?

If you are moving to a taller sidewall, ride comfort on rough pavement often improves because the tire absorbs more impact before the suspension does. If you are widening without much diameter change, steering may feel heavier but impact harshness might not improve much. Stiffer all-terrain carcasses can ride harder than plush OEM all-seasons despite similar dimensions. Test-drive a known brand in this size before committing to four tires if comfort is your main concern.

Is 255/55R19 good in snow?

Snow performance depends more on tread compound and 3PMSF certification than size alone. 255/55R19 can be excellent in winter when mounted with a dedicated all-weather or winter pattern with siping and flexible rubber. A tall all-terrain without winter rating may underperform a smaller winter tire in ice and slush. If you see regular below-freezing months, consider a two-wheel-set strategy rather than one compromise tire year-round. Correct inflation is critical in cold weather — pressure drops as temperatures fall.

Is 255/55R19 good for daily SUV driving?

Yes for many crossovers when fitment is confirmed and you choose a road-biased compound. 255/55R19 handles school runs, highway commuting, and warehouse-store parking lots without the compromises of extreme off-road builds. Cabin noise and steering effort may shift slightly versus OEM rubber — usually acceptable for adventure-oriented owners. Rotate on schedule and monitor TPMS after upsizing. Daily drivability stays strong when you avoid the most aggressive mud-terrain treads for pavement-only use.

What's the difference between 255/55R19 and 245/60R18?

The key differences versus 245/60R18 are overall diameter, width, and how much fitment margin your SUV retains — see the comparison section for exact numbers. A larger neighbor adds stance and light-trail confidence but may require attention to rubbing and speedometer accuracy. A smaller neighbor maximizes efficiency and fitment ease. Choose based on whether your SUV sees occasional gravel and snow or stays primarily on paved commuter routes.

Related Sizes & Explore More

Other 255-Width Tires

Other 19-Inch Tires