Tire Scouter

285/40R18 tires

Compare 2 models made in this size across 1 category, ranked by spec score, then confirm fitment for your vehicle.

Spec scores are estimates from five manufacturer specs, not road tests. How we score

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Our top pick in 285/40R18

Nitto NT555 G2

  • Ultra high performance summer

Best for enthusiast drivers.

The Nitto NT555 G2 is a strong choice for drivers who prioritize dry and wet grip, with perfect scores in both dry grip and handling, and a wet grip rating of 9 that exceeds the category average.

  • Perfect dry grip score of 10, significantly above the category average of 8.7, ideal for spirited driving.
  • Wet grip rating of 9 outpaces the ultra-high-performance summer average of 7.6, enhancing safety in wet conditions.
  • Handling score of 10 ensures precise and responsive driving dynamics, a standout feature in this category.
Full analysis

The highest spec score among ultra high performance summer tires in this size that we have analysis for, the most common category for 285/40R18.

80Strong
None listed
320
AA
W · 168 mph

Every scale below runs from the lowest to the highest spec score among the 2 scored tires in 285/40R18 (69 to 80).

Best ultra high performance summer tires in 285/40R18

2 models, highest spec score first.

All ultra high performance summer tires

  1. Nitto NT555 G2

    Best for enthusiast drivers.

    80StrongFrom 4 of 5 specs
    Warranty
    None listed
    Treadwear
    320
    Traction
    AA
    Speed rating
    W · 168 mph
    • Perfect dry grip score of 10, significantly above the category average of 8.7, ideal for spirited driving.
    • Wet grip rating of 9 outpaces the ultra-high-performance summer average of 7.6, enhancing safety in wet conditions.
    • Lack of a treadwear warranty could deter buyers looking for a guaranteed lifespan, especially when competitors offer one.

  2. Michelin Pilot Sport 4S

    Best for enthusiast drivers.

    69Good
    Warranty
    30k mi
    Treadwear
    300
    Traction
    AA
    Speed rating
    Y · 186 mph
    • Dry grip score of 10 leads the ultra high performance summer category, ideal for spirited driving.
    • Wet grip score of 9 significantly exceeds the category average of 7.6, enhancing safety in wet conditions.
    • The 30,000-mile treadwear warranty may fall short for drivers who cover extensive distances annually.

Popular brands in 285/40R18

The number beside each brand is how many of its models come in this size.

What 285/40R18 means

285/40R18 designates a tire 285 mm (11.2") wide with a sidewall 40% as tall as it is wide — about 114 mm (4.5") — mounted on a 18-inch wheel. That works out to an overall diameter of roughly 27.0", a circumference of about 84.7", and approximately 748 revolutions per mile. Exact figures vary slightly by manufacturer and tread design.

Of the 2 285/40R18 tire models we track, the most common category is ultra high performance summer (2 models) — a good indicator of the kind of vehicles and driving this size is designed for.

Sidewall height
114 mm
Overall diameter
27.0 in
Circumference
84.7 in
Revs per mile
748

Frequently asked questions

What does 285/40R18 mean?

285/40R18 breaks down as follows: 285mm is the tire's section width (the widest point), 40 is the aspect ratio (sidewall height as a percentage of width), R means radial construction, and 18 is the wheel diameter in inches.

What vehicles use 285/40R18 tires?

285/40R18 is a standard tire size found on many trucks, SUVs, and crossovers. Use our vehicle search to confirm your exact fitment.

How tall is a 285/40R18 tire?

A 285/40R18 tire has a sidewall height of about 114 mm (4.5") and an overall diameter of roughly 27.0", turning approximately 748 revolutions per mile. Actual dimensions vary slightly by manufacturer and model, so confirm against your vehicle's placard before changing sizes.

285/40R18 research guides

Summer vs all-season tires

Where summer tires lose grip, the cold-cracking risk, and what all-season tires trade for their range.

Read the guide

Speed rating chart

A practical chart for common tire speed ratings and what they mean for everyday driving.

Read the guide

Changing tire size

Plus-sizing and alternate sizes: diameter limits, load and speed ratings, and speedometer error.

Read the guide

Confirm 285/40R18 fits your vehicle

Wheel size can vary by trim and option package. Enter your year, make, model, and trim to verify fitment before you order.

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